Plant Voucher Checklist for Banning, Cabazon, Morongo Indian Reservation, Snow Creek, Whitewater River Canyon area, San Bernardino Mountains
Introduction
Procedure For Compiling The Checklist
Checklist
Introduction
This is not to be confused with a flora of this area!!! This is only a compilation of voucher names, found in an online search in January and February 2010 for vouchers. It may have some obviously-wrong names in it!!
As only one example of an obviously-wrong name that I caught, there were two vouchers of Quercus dumosa found in this area, back from the days when several of the southern California scrub oak species were treated under that name. I tossed those vouchers from the checklist here, since the correct name cannot be determined without looking at those vouchers.
Caveat emptor!
This checklist was compiled solely in preparation for the BioBlitz scheduled in Whitewater River Canyon on 12-13 April 2010.
Such voucher lists are usually very incomplete. However, the number of vouchers from the Banning Pass area astounded me; this voucher checklist is likely to be much more complete than the typical voucher checklist.
The goal of the organizers of the BioBlitz was to have as complete a checklist as possible, so this list errs on the side of completeness. Of course, the tradeoff for higher completeness is lower reliability.
The list presented here is for a larger area than just the Whitewater Canyon portion presented separately. That checklist has 401 taxa. This checklist has 814 taxa, contains roughly twice as many species, and covers roughly seven times the area (~140 square miles versus ~20 square miles for Whitewater Canyon).
The doubling in the number of species is close to the factor of 1.8 expected if the number of species scales with area to the 0.3 power.
Hence it is quite likely that half of the species in this checklist are not actually present in Whitewater Canyon.
However, since the voucher checklist for Whitewater Canyon is probably incomplete by 10% or so, this list undoubtedly contains many of the species that are missing from the voucher checklist just for Whitewater Canyon.
To make the above clear, assume that the Whitewater Canyon checklist is 10% incomplete. Then the true checklist for the canyon has 445 taxa instead of the 401 from vouchers, and the checklist from vouchers is missing 44 taxa. In the best case, this list contains all those missing 44 taxa. But it also contains 814 - 445 = 369 taxa that are not present in Whitewater Canyon, which is the tradeoff for trying to get those "missing 44 taxa" by compiling a checklist from a larger area.
I.e., for every "missing Whitewater Canyon" taxa contained in the additional taxa in this list, there are eight taxa in this list that are not present in Whitewater Canyon.
Procedure For Compiling The Checklist
See Procedure For Compiling The Whitewater Canyon Checklist for the initial construction of the voucher list.
For the checklist below for the area west of Whitewater Canyon, I combined the vouchers for two areas:
- Area to west of Whitewater Post Office, including Banning, Cottonwood Canyon, Millard Canyon, Morongo Indian Reservation, etc., with 1,802 vouchers.
- Snow Creek area of Banning Pass, with 338 vouchers.
I augmented these vouchers by a spatial coordinate search of the Consortium of California Herbaria for vouchers with coordinates in the rectangle bounded by latitude 33.878 to 34.048°, and longitude -116.920 to -116.737°. That search yielded 506 vouchers not found in the previous searches.
The locality field was reviewed for the additional vouchers, and five vouchers from Cushenbury Springs, on the north side of the San Bernardino Mountains, were rejected as having bad coordinates.
Note that since I did not do explicit searches for localities in the area west of Whitewater, I undoubtedly missed vouchers that did not have coordinates in this area, such as ones with a locality field that just said Banning.
The vouchers were compared to my southern California database, and all names were converted to the 1993 Jepson Manual versions as much as possible.
Vouchers of just the species were assigned to the appropriate subspecies whenever the subspecies was unambiguous. If it was ambiguous, vouchers of just the species name were retained along with any vouchers of subspecies that also existed.
This resulted in a total of 669 separate taxa given in the checklist below for the area west of Whitewater, from 2,578 vouchers that could be determined to species. The separate Whitewater Canyon area has a total of 401 taxa, from 1,633 vouchers that could be determined to species.
The combined checklist has a total of 814 taxa, from 4,211 vouchers.
These two separate areas are explicitly shown in the map below, which plots just those vouchers with coordinates used for this checklist. About one-fourth of the vouchers used in the Checklist below for the area west of Whitewater Canyon did not have coordinates, and were placed in this area from the detailed review of the locality as detailed in the Whitewater Canyon checklist.
Checklist for Banning, Cabazon, Morongo Indian Reservation, Snow Creek, Whitewater River Canyon area
The Checklist is sorted first by category - ferns, dicots, and monocots - and then by family and scientific name. The Family and Scientific Name are from the Jepson Manual. An asterisk before the Common Name indicates a non-native taxon.
Two columns, each giving the total number of vouchers found in the area specified by the column header, are given under the heading #Vouchers. The first column is for Whitewater River Canyon area (WW); the second is for the area west of Whitewater Canyon (West of WW).
The column SnBr indicates whether that taxon is in the SnBr Bootleg Flora from Krantz and Sanders, circa 2003. The column contains a code as follows:
| Code | Meaning |
|---|---|
| 1 | taxa in the SnBr flora with the same taxon name |
| 2 | taxa that have had names converted to the Jepson Manual system |
| 4 | taxa with SnBr or TR in the Jepson Manual geographic ranges |
| 5 | taxa included in the SnBr flora from Munz or other non-Jepson Manual report |
| 7 | taxa that have had subspecies assigned using the Jepson Manual geographic ranges |
| 9 | taxa that are questionably present at SnBr |
This is a working list, about which I make no guarantees at all. Use at your own risk!
Version for printing, without lines and other text on this page: html ( pages) or pdf Clickbook booklet ( double-sided pages). (See printing instructions for an explanation of these options)
| # | JM Family | Scientific Name | (*)Common Name | #Vouchers | SnBr | |
|---|---|---|---|---|---|---|
| WW | West of WW | |||||
| 1 | Blechnaceae | Woodwardia fimbriata | giant chain fern | 1 | 3 | 1 |
| 2 | Dennstaedtiaceae | Pteridium aquilinum var. pubescens | bracken | 2 | 1 | |
| 3 | Dryopteridaceae | Dryopteris arguta | California wood fern | 2 | 1 | |
| 4 | Dryopteridaceae | Polystichum scopulinum | mountain holly fern | 1 | 1 | |
| 5 | Equisetaceae | Equisetum hyemale ssp. affine | horsetail | 2 | 1 | |
| 6 | Equisetaceae | Equisetum laevigatum | smooth scouring rush | 2 | 1 | 1 |
| 7 | Polypodiaceae | Polypodium californicum | California polypody | 1 | 1 | |
| 8 | Polypodiaceae | Polypodium hesperium | western polypody | 1 | 1 | |
| 9 | Pteridaceae | Adiantum capillus-veneris | maidenhair fern | 1 | 1 | |
| 10 | Pteridaceae | Cheilanthes clevelandii | scaly lipfern | 7 | ||
| 11 | Pteridaceae | Cheilanthes covillei | beady lipfern | 5 | 11 | 1 |
| 12 | Pteridaceae | Cheilanthes parryi | woolly lipfern | 4 | 1 | |
| 13 | Pteridaceae | Cheilanthes viscida | sticky lipfern | 10 | 1 | |
| 14 | Pteridaceae | Notholaena californica | California cloak fern | 2 | 94 | |
| 15 | Pteridaceae | Pellaea andromedifolia | coffee fern | 4 | 6 | 1 |
| 16 | Pteridaceae | Pellaea mucronata var. mucronata | bird's-foot fern | 3 | 11 | 1 |
| 17 | Pteridaceae | Pentagramma triangularis ssp. maxonii | Maxon's goldback fern | 1 | ||
| 18 | Pteridaceae | Pentagramma triangularis ssp. triangularis | goldback fern | 2 | 1 | |
| 19 | Selaginellaceae | Selaginella bigelovii | Bigelow's spike-moss | 11 | 2 | 1 |
| 20 | Cupressaceae | Juniperus californica | California juniper | 1 | 1 | |
| 21 | Ephedraceae | Ephedra aspera | Mormon tea | 1 | ||
| 22 | Ephedraceae | Ephedra californica | desert tea | 23 | 13 | 1 |
| 23 | Pinaceae | Pseudotsuga macrocarpa | bigcone-spruce | 2 | 1 | |
| 24 | Aceraceae | Acer macrophyllum | bigleaf maple | 1 | 1 | |
| 25 | Aceraceae | Acer negundo var. californicum | box elder | 4 | 1 | |
| 26 | Amaranthaceae | Amaranthus albus | *tumble pigweed | 2 | 1 | |
| 27 | Amaranthaceae | Amaranthus fimbriatus | fringed amaranth | 2 | 1 | |
| 28 | Amaranthaceae | Amaranthus hybridus | *slim amaranth | 1 | 1 | |
| 29 | Amaranthaceae | Amaranthus retroflexus | *red-rooted amaranth | 2 | 1 | |
| 30 | Anacardiaceae | Rhus ovata | sugar bush | 5 | 8 | 1 |
| 31 | Anacardiaceae | Rhus trilobata | basketbush | 5 | 1 | |
| 32 | Anacardiaceae | Toxicodendron diversilobum | poison oak | 1 | 2 | |
| 33 | Apiaceae | Anthriscus caucalis | *bur chervil | 1 | 1 | |
| 34 | Apiaceae | Bowlesia incana | hoary bowlesia | 1 | ||
| 35 | Apiaceae | Daucus pusillus | rattlesnake weed | 2 | 1 | |
| 36 | Apiaceae | Hydrocotyle ranunculoides | floating marsh-pennywort | 2 | ||
| 37 | Apiaceae | Hydrocotyle umbellata | marsh-pennywort | 2 | 3 | 1 |
| 38 | Apiaceae | Lomatium dasycarpum ssp. dasycarpum | woolly-fruited lomatium | 1 | ||
| 39 | Apiaceae | Lomatium dissectum | fern-leaved lomatium | 1 | ||
| 40 | Apiaceae | Lomatium lucidum | shiny lomatium | 3 | 1 | |
| 41 | Apiaceae | Lomatium utriculatum | common lomatium | 2 | 3 | |
| 42 | Apiaceae | Osmorhiza brachypoda | California sweet-cicely | 2 | 1 | |
| 43 | Apiaceae | Sanicula bipinnatifida | purple sanicle | 1 | ||
| 44 | Apiaceae | Tauschia arguta | southern tauschia | 2 | 6 | 1 |
| 45 | Apiaceae | Tauschia parishii | Parish's tauschia | 1 | 1 | |
| 46 | Asclepiadaceae | Asclepias californica | California milkweed | 4 | 1 | |
| 47 | Asclepiadaceae | Asclepias eriocarpa | Indian milkweed | 1 | 1 | |
| 48 | Asclepiadaceae | Asclepias subulata | rush milkweed | 1 | 1 | |
| 49 | Asclepiadaceae | Sarcostemma cynanchoides ssp. hartwegii | climbing milkweed | 5 | 9 | 1 |
| 50 | Asclepiadaceae | Sarcostemma hirtellum | rambling milkweed | 1 | ||
| 51 | Asteraceae | Acamptopappus sphaerocephalus | goldenhead | 8 | 4 | 1 |
| 52 | Asteraceae | Acamptopappus sphaerocephalus var. hirtellus | hairy goldenhead | 1 | ||
| 53 | Asteraceae | Acamptopappus sphaerocephalus var. sphaerocephalus | goldenhead | 13 | 4 | |
| 54 | Asteraceae | Acourtia microcephala | purple head | 1 | 1 | |
| 55 | Asteraceae | Adenophyllum porophylloides | San Felipe dogweed | 2 | 9 | |
| 56 | Asteraceae | Agoseris grandiflora | grand mountain dandelion | 1 | 1 | |
| 57 | Asteraceae | Agoseris retrorsa | spear-leaved mountain dandelion | 1 | 1 | |
| 58 | Asteraceae | Ambrosia acanthicarpa | bur-ragweed | 3 | 2 | 1 |
| 59 | Asteraceae | Ambrosia confertiflora | weak-leaved burweed | 3 | 1 | |
| 60 | Asteraceae | Ambrosia dumosa | burroweed | 7 | 4 | 1 |
| 61 | Asteraceae | Antennaria rosea | rosy everlasting, pussytoes | 1 | 1 | |
| 62 | Asteraceae | Artemisia californica | California sagebrush | 4 | 7 | 1 |
| 63 | Asteraceae | Artemisia douglasiana | mugwort | 1 | 1 | |
| 64 | Asteraceae | Artemisia dracunculus | wild tarragon | 1 | 1 | |
| 65 | Asteraceae | Artemisia ludoviciana | silver wormwood | 1 | 1 | |
| 66 | Asteraceae | Artemisia ludoviciana ssp. albula | white mugwort | 4 | ||
| 67 | Asteraceae | Artemisia ludoviciana ssp. ludoviciana | silver wormwood | 1 | ||
| 68 | Asteraceae | Aster bernardinus | San Bernardino aster | 3 | 1 | |
| 69 | Asteraceae | Atrichoseris platyphylla | gravel-ghost | 1 | ||
| 70 | Asteraceae | Baccharis brachyphylla | short-leaved baccharis | 7 | 1 | |
| 71 | Asteraceae | Baccharis emoryi | Emory's baccharis | 6 | 1 | 1 |
| 72 | Asteraceae | Baccharis pilularis | coyote bush | 1 | ||
| 73 | Asteraceae | Baccharis salicifolia | mule fat | 8 | 3 | 1 |
| 74 | Asteraceae | Baccharis sarothroides | broom baccharis | 4 | 9 | |
| 75 | Asteraceae | Baccharis sergiloides | desert baccharis | 15 | 5 | 1 |
| 76 | Asteraceae | Baileya pauciradiata | Colorado Desert marigold | 1 | ||
| 77 | Asteraceae | Bebbia juncea var. aspera | sweetbush | 10 | 4 | 1 |
| 78 | Asteraceae | Brickellia arguta | California spear-leaved brickellia | 6 | 1 | |
| 79 | Asteraceae | Brickellia californica | California brickellbush | 1 | 1 | |
| 80 | Asteraceae | Brickellia desertorum | desert brickellia | 7 | 7 | 1 |
| 81 | Asteraceae | Calycoseris parryi | yellow tackstem | 4 | 1 | |
| 82 | Asteraceae | Calycoseris wrightii | white tackstem | 1 | ||
| 83 | Asteraceae | Centaurea solstitialis | *yellow star-thistle | 1 | 1 | |
| 84 | Asteraceae | Chaenactis fremontii | Fremont pincushion | 25 | 25 | 1 |
| 85 | Asteraceae | Chaenactis glabriuscula | yellow pincushion | 14 | 1 | |
| 86 | Asteraceae | Chaenactis glabriuscula var. glabriuscula | yellow pincushion | 5 | 11 | |
| 87 | Asteraceae | Chaenactis glabriuscula var. lanosa | woolly yellow chaenactis | 3 | ||
| 88 | Asteraceae | Chaenactis stevioides | desert pincushion | 1 | 1 | 1 |
| 89 | Asteraceae | Chamomilla suaveolens | *pineapple weed | 1 | 1 | |
| 90 | Asteraceae | Chrysothamnus nauseosus ssp. hololeucus | ghostly rabbitbrush | 1 | ||
| 91 | Asteraceae | Chrysothamnus nauseosus ssp. mohavensis | Mohave common rabbitbrush | 1 | ||
| 92 | Asteraceae | Chrysothamnus paniculatus | blackbanded rabbitbrush | 11 | 8 | 1 |
| 93 | Asteraceae | Chrysothamnus teretifolius | needle-leaved rabbitbrush | 1 | 1 | |
| 94 | Asteraceae | Cirsium occidentale var. californicum | California thistle | 2 | 1 | |
| 95 | Asteraceae | Cirsium occidentale var. occidentale | cobwebby thistle | 3 | 1 | |
| 96 | Asteraceae | Cnicus benedictus | *blessed thistle | 1 | 1 | |
| 97 | Asteraceae | Conyza canadensis | horseweed | 1 | 1 | |
| 98 | Asteraceae | Conyza coulteri | Coulter's horseweed | 1 | 1 | |
| 99 | Asteraceae | Coreopsis bigelovii | Bigelow's coreopsis | 5 | 2 | 1 |
| 100 | Asteraceae | Coreopsis californica var. californica | California coreopsis | 3 | 5 | 1 |
| 101 | Asteraceae | Dicoria canescens | desert dicoria | 10 | 5 | 1 |
| 102 | Asteraceae | Dimorphotheca sinuata | *African daisy | 2 | 1 | |
| 103 | Asteraceae | Encelia actoni | Acton encelia | 3 | 6 | 1 |
| 104 | Asteraceae | Encelia farinosa | brittlebush | 10 | 4 | 1 |
| 105 | Asteraceae | Encelia virginensis | Virgin River encelia | 1 | ||
| 106 | Asteraceae | Ericameria brachylepis | boundary goldenbush | 1 | 1 | |
| 107 | Asteraceae | Ericameria cuneata var. spathulata | wide-leaved rock goldenbush | 2 | ||
| 108 | Asteraceae | Ericameria laricifolia | turpentine-brush | 1 | ||
| 109 | Asteraceae | Ericameria linearifolia | narrowleaf goldenbush | 4 | 7 | 1 |
| 110 | Asteraceae | Ericameria palmeri var. pachylepis | Palmer's goldenbush | 2 | ||
| 111 | Asteraceae | Ericameria pinifolia | pine goldenbush | 5 | 1 | |
| 112 | Asteraceae | Erigeron breweri var. covillei | Coville's fleabane | 2 | ||
| 113 | Asteraceae | Erigeron foliosus var. foliosus | leafy daisy | 10 | 1 | |
| 114 | Asteraceae | Erigeron philadelphicus | Philadelphia fleabane | 1 | ||
| 115 | Asteraceae | Eriophyllum ambiguum var. paleaceum | annual woolly sunflower | 1 | ||
| 116 | Asteraceae | Eriophyllum confertiflorum var. confertiflorum | golden yarrow | 3 | 14 | 2 |
| 117 | Asteraceae | Eriophyllum multicaule | branched woolly sunflower | 2 | 1 | |
| 118 | Asteraceae | Eriophyllum wallacei | Wallace's woolly daisy | 12 | 15 | 1 |
| 119 | Asteraceae | Filago californica | California filago | 13 | 7 | 1 |
| 120 | Asteraceae | Filago depressa | dwarf filago | 2 | 1 | |
| 121 | Asteraceae | Filago gallica | *narrowleaf filago | 1 | 2 | 1 |
| 122 | Asteraceae | Gnaphalium bicolor | bicolored everlasting | 1 | 1 | 1 |
| 123 | Asteraceae | Gnaphalium californicum | California everlasting | 5 | 1 | |
| 124 | Asteraceae | Gnaphalium canescens | white everlasting | 2 | ||
| 125 | Asteraceae | Gnaphalium canescens ssp. microcephalum | white everlasting | 1 | 1 | |
| 126 | Asteraceae | Gnaphalium luteo-album | *common cudweed | 2 | 3 | 1 |
| 127 | Asteraceae | Gnaphalium purpureum | purple everlasting | 1 | 1 | |
| 128 | Asteraceae | Gnaphalium stramineum | cotton-batting plant | 1 | 1 | |
| 129 | Asteraceae | Gutierrezia californica | California matchweed | 1 | 3 | 1 |
| 130 | Asteraceae | Hazardia squarrosa var. grindelioides | saw-toothed goldenbush | 1 | 7 | |
| 131 | Asteraceae | Hedypnois cretica | *Crete weed | 4 | ||
| 132 | Asteraceae | Helianthus gracilentus | slender sunflower | 4 | 1 | |
| 133 | Asteraceae | Heliomeris multiflora var. nevadensis | golden-eye | 1 | ||
| 134 | Asteraceae | Hemizonia kelloggii | Kellogg's tarweed | 1 | ||
| 135 | Asteraceae | Hemizonia mohavensis | Mojave tarplant | 14 | 8 | |
| 136 | Asteraceae | Heterotheca grandiflora | telegraph weed | 1 | 1 | |
| 137 | Asteraceae | Heterotheca sessiliflora ssp. echioides | bristly goldenaster | 1 | 7 | |
| 138 | Asteraceae | Heterotheca sessiliflora ssp. fastigiata | erect goldenaster | 8 | 1 | 7 |
| 139 | Asteraceae | Hulsea heterochroma | red-rayed hulsea | 4 | 1 | |
| 140 | Asteraceae | Hymenoclea salsola | cheesebush | 11 | 7 | 1 |
| 141 | Asteraceae | Hymenoclea salsola var. patula | cheesebush | 1 | ||
| 142 | Asteraceae | Hymenoclea salsola var. pentalepis | cheesebush | 1 | ||
| 143 | Asteraceae | Hymenoclea salsola var. salsola | cheesebush | 2 | ||
| 144 | Asteraceae | Hypochaeris glabra | *smooth cat's ear | 1 | 3 | 1 |
| 145 | Asteraceae | Isocoma acradenia var. acradenia | alkali goldenbush | 1 | ||
| 146 | Asteraceae | Isocoma acradenia var. bracteosa | bracted alkali goldenbush | 1 | ||
| 147 | Asteraceae | Isocoma acradenia var. eremophila | solitary-leaved alkali goldenbush | 11 | 1 | 1 |
| 148 | Asteraceae | Lagophylla ramosissima | common hareleaf | 2 | ||
| 149 | Asteraceae | Lasthenia californica | goldfields | 1 | 15 | 1 |
| 150 | Asteraceae | Lasthenia coronaria | southern goldfields | 7 | 4 | 1 |
| 151 | Asteraceae | Layia glandulosa | white tidy-tips | 1 | 10 | 1 |
| 152 | Asteraceae | Layia platyglossa | common tidy-tips | 2 | 13 | |
| 153 | Asteraceae | Lepidospartum squamatum | scale-broom | 18 | 2 | 1 |
| 154 | Asteraceae | Lessingia filaginifolia var. filaginifolia | California-aster | 9 | 2 | |
| 155 | Asteraceae | Machaeranthera asteroides var. asteroides | hoary aster | 1 | ||
| 156 | Asteraceae | Madia gracilis | slender madia | 2 | 1 | |
| 157 | Asteraceae | Malacothrix californica | California dandelion | 2 | ||
| 158 | Asteraceae | Malacothrix clevelandii | annual malacothrix | 5 | 1 | |
| 159 | Asteraceae | Malacothrix glabrata | desert dandelion | 5 | 16 | 1 |
| 160 | Asteraceae | Malacothrix saxatilis | cliff-aster | 1 | ||
| 161 | Asteraceae | Monoptilon bellioides | desert star | 3 | 9 | |
| 162 | Asteraceae | Palafoxia arida var. arida | desert needle | 15 | 3 | |
| 163 | Asteraceae | Pectis papposa var. papposa | chinch-weed | 1 | 1 | |
| 164 | Asteraceae | Pentachaeta aurea | golden daisy | 1 | 1 | |
| 165 | Asteraceae | Peucephyllum schottii | pygmy-cedar | 7 | 1 | |
| 166 | Asteraceae | Pleurocoronis pluriseta | arrow-leaf | 1 | 9 | |
| 167 | Asteraceae | Pluchea sericea | arrow-weed | 3 | 1 | 1 |
| 168 | Asteraceae | Psathyrotes ramosissima | turtleback | 1 | 1 | |
| 169 | Asteraceae | Pulicaria paludosa | *Spanish false-fleabane | 8 | 1 | |
| 170 | Asteraceae | Rafinesquia californica | California chicory | 3 | 5 | 1 |
| 171 | Asteraceae | Rafinesquia neomexicana | desert chicory | 12 | 3 | 1 |
| 172 | Asteraceae | Senecio californicus | California groundsel | 3 | 1 | 1 |
| 173 | Asteraceae | Senecio flaccidus var. douglasii | bush senecio | 9 | 1 | |
| 174 | Asteraceae | Senecio ionophyllus | Tehachapi ragwort | 1 | 1 | |
| 175 | Asteraceae | Senecio vulgaris | *common groundsel | 1 | 1 | |
| 176 | Asteraceae | Solidago californica | goldenrod | 6 | 1 | |
| 177 | Asteraceae | Sonchus asper ssp. asper | *prickly sow thistle | 1 | 1 | |
| 178 | Asteraceae | Sonchus oleraceus | *sow thistle | 3 | 1 | |
| 179 | Asteraceae | Stephanomeria exigua | slender wreathplant | 1 | ||
| 180 | Asteraceae | Stephanomeria exigua ssp. exigua | slender wreathplant | 5 | 7 | |
| 181 | Asteraceae | Stephanomeria pauciflora | wire-lettuce | 3 | 1 | |
| 182 | Asteraceae | Stephanomeria pauciflora var. pauciflora | wire-lettuce | 1 | ||
| 183 | Asteraceae | Stylocline gnaphaloides | everlasting nest-straw | 7 | 2 | 1 |
| 184 | Asteraceae | Taraxacum officinale | *common dandelion | 1 | 1 | |
| 185 | Asteraceae | Tetradymia comosa | cotton-thorn | 1 | 8 | 1 |
| 186 | Asteraceae | Trichoptilium incisum | yellow-head | 1 | ||
| 187 | Asteraceae | Trixis californica var. californica | California trixis | 1 | 2 | |
| 188 | Asteraceae | Uropappus lindleyi | silver puffs | 13 | 1 | |
| 189 | Asteraceae | Verbesina encelioides ssp. exauriculata | *golden viguiera | 1 | ||
| 190 | Asteraceae | Viguiera parishii | Parish's viguiera | 18 | 6 | 1 |
| 191 | Asteraceae | Xanthium strumarium | cocklebur | 1 | 1 | |
| 192 | Berberidaceae | Berberis aquifolium var. dictyota | California barberry | 1 | 1 | |
| 193 | Berberidaceae | Berberis aquifolium var. repens | creeping Oregon grape | 1 | ||
| 194 | Betulaceae | Alnus rhombifolia | white alder | 4 | 6 | 1 |
| 195 | Bignoniaceae | Chilopsis linearis ssp. arcuata | desert-willow | 8 | 13 | 1 |
| 196 | Boraginaceae | Amsinckia menziesii | fiddleneck | 3 | 1 | |
| 197 | Boraginaceae | Amsinckia menziesii var. intermedia | common fiddleneck | 2 | 7 | 1 |
| 198 | Boraginaceae | Amsinckia tessellata | bristly fiddleneck | 1 | 2 | 1 |
| 199 | Boraginaceae | Cryptantha angustifolia | narrow-leaved cryptantha | 3 | 9 | |
| 200 | Boraginaceae | Cryptantha barbigera | bearded cryptantha | 13 | 4 | 1 |
| 201 | Boraginaceae | Cryptantha circumscissa | cushion cryptantha | 1 | 1 | |
| 202 | Boraginaceae | Cryptantha clevelandii | Cleveland's cryptantha | 1 | ||
| 203 | Boraginaceae | Cryptantha corollata | Coast Range cryptantha | 2 | ||
| 204 | Boraginaceae | Cryptantha decipiens | gravel cryptantha | 2 | 3 | 2 |
| 205 | Boraginaceae | Cryptantha dumetorum | bush-loving cryptantha | 1 | 1 | |
| 206 | Boraginaceae | Cryptantha intermedia | popcorn flower | 14 | 28 | 1 |
| 207 | Boraginaceae | Cryptantha micrantha | purple-root cryptantha | 8 | 2 | 1 |
| 208 | Boraginaceae | Cryptantha microstachys | Tejon cryptantha | 4 | 1 | |
| 209 | Boraginaceae | Cryptantha muricata | prickly cryptantha | 1 | 8 | 1 |
| 210 | Boraginaceae | Cryptantha nemaclada | Colusa cryptantha | 1 | ||
| 211 | Boraginaceae | Cryptantha pterocarya | wing-nut cryptantha | 2 | 1 | |
| 212 | Boraginaceae | Cryptantha racemosa | bushy cryptantha | 5 | 1 | |
| 213 | Boraginaceae | Cryptantha utahensis | scented cryptantha | 6 | 1 | |
| 214 | Boraginaceae | Pectocarya linearis ssp. ferocula | slender combseed | 3 | 10 | 2 |
| 215 | Boraginaceae | Pectocarya penicillata | combseed | 1 | 8 | 1 |
| 216 | Boraginaceae | Pectocarya peninsularis | Baja pectocarya | 1 | ||
| 217 | Boraginaceae | Pectocarya recurvata | curvenut combseed | 2 | 1 | |
| 218 | Boraginaceae | Plagiobothrys arizonicus | Arizona popcorn flower | 8 | 1 | |
| 219 | Boraginaceae | Plagiobothrys canescens | grey popcorn flower | 2 | 1 | |
| 220 | Boraginaceae | Plagiobothrys nothofulvus | rusty-haired popcorn flower | 2 | 1 | |
| 221 | Boraginaceae | Plagiobothrys tenellus | slender popcorn flower | 2 | 1 | |
| 222 | Boraginaceae | Tiquilia plicata | plicate coldenia | 1 | 1 | 1 |
| 223 | Brassicaceae | Arabis glabra var. glabra | tower mustard | 2 | 2 | |
| 224 | Brassicaceae | Arabis perennans | perennial rock-cress | 1 | 5 | |
| 225 | Brassicaceae | Arabis pulchra | beautiful rock-cress | 1 | 1 | |
| 226 | Brassicaceae | Arabis sparsiflora | elegant rock-cress | 2 | ||
| 227 | Brassicaceae | Arabis sparsiflora var. californica | California elegant rock-cress | 2 | ||
| 228 | Brassicaceae | Brassica tournefortii | *Asian mustard | 4 | 7 | 1 |
| 229 | Brassicaceae | Capsella bursa-pastoris | *shepherd's purse | 2 | 1 | |
| 230 | Brassicaceae | Caulanthus amplexicaulis var. amplexicaulis | clasping-leaved caulanthus | 1 | 1 | |
| 231 | Brassicaceae | Caulanthus heterophyllus var. pseudosimulans | slender-pod jewelflower | 1 | 3 | |
| 232 | Brassicaceae | Dithyrea californica | spectacle-pod | 13 | 2 | 1 |
| 233 | Brassicaceae | Erysimum capitatum ssp. capitatum | western wallflower | 4 | 2 | |
| 234 | Brassicaceae | Guillenia lasiophylla | California mustard | 1 | 1 | |
| 235 | Brassicaceae | Lepidium lasiocarpum var. lasiocarpum | hairy-podded pepper-grass | 1 | 2 | |
| 236 | Brassicaceae | Lepidium nitidum var. nitidum | shining peppergrass | 1 | 2 | |
| 237 | Brassicaceae | Lepidium virginicum | wild pepper-grass | 2 | 1 | |
| 238 | Brassicaceae | Lepidium virginicum var. pubescens | wild pepper-grass | 2 | ||
| 239 | Brassicaceae | Raphanus sativus | *purple wild radish | 1 | 1 | |
| 240 | Brassicaceae | Rorippa nasturtium-aquaticum | water cress | 4 | 3 | 1 |
| 241 | Brassicaceae | Sisymbrium altissimum | *tumble-mustard | 3 | 1 | |
| 242 | Brassicaceae | Sisymbrium irio | *London rocket | 2 | 1 | |
| 243 | Brassicaceae | Sisymbrium officinale | *hedge mustard | 3 | 1 | |
| 244 | Brassicaceae | Sisymbrium orientale | *Oriental mustard | 4 | 1 | |
| 245 | Brassicaceae | Streptanthella longirostris | longbeak streptanthella | 11 | 1 | |
| 246 | Brassicaceae | Thysanocarpus curvipes | fringe-pod | 1 | 5 | 1 |
| 247 | Brassicaceae | Thysanocarpus laciniatus | lace-pod | 3 | 1 | |
| 248 | Brassicaceae | Tropidocarpum gracile | slender tropidocarpum | 2 | 1 | 1 |
| 249 | Cactaceae | Echinocereus engelmannii | Engelmann's hedgehog cactus | 2 | 1 | 2 |
| 250 | Cactaceae | Ferocactus cylindraceus | California barrel cactus | 3 | 1 | |
| 251 | Cactaceae | Mammillaria dioica | California fish-hook cactus | 1 | ||
| 252 | Cactaceae | Mammillaria tetrancistra | fish-hook cactus | 2 | 1 | |
| 253 | Cactaceae | Opuntia basilaris var. basilaris | beavertail cactus | 2 | 8 | 1 |
| 254 | Cactaceae | Opuntia bigelovii | teddy-bear cholla | 1 | 1 | |
| 255 | Cactaceae | Opuntia echinocarpa | silver cholla | 1 | 5 | 1 |
| 256 | Cactaceae | Opuntia parryi | cane cholla | 5 | 1 | |
| 257 | Cactaceae | Opuntia phaeacantha | desert prickly-pear | 1 | 8 | 1 |
| 258 | Campanulaceae | Githopsis diffusa ssp. diffusa | San Gabriel bluecup | 1 | 2 | |
| 259 | Campanulaceae | Lobelia cardinalis var. pseudosplendens | cardinal flower | 5 | 1 | |
| 260 | Campanulaceae | Nemacladus longiflorus var. breviflorus | thread plant | 1 | 2 | 2 |
| 261 | Campanulaceae | Nemacladus pinnatifidus | comb-leaved nemacladus | 1 | 1 | |
| 262 | Campanulaceae | Nemacladus rubescens | desert nemacladus | 1 | 1 | |
| 263 | Capparaceae | Isomeris arborea | bladderpod | 9 | 7 | 1 |
| 264 | Caprifoliaceae | Lonicera interrupta | chaparral honeysuckle | 1 | 7 | 1 |
| 265 | Caprifoliaceae | Sambucus mexicana | blue elderberry | 5 | 1 | |
| 266 | Caryophyllaceae | Achyronychia cooperi | frost mat | 2 | 2 | |
| 267 | Caryophyllaceae | Cerastium glomeratum | *mouse-ear chickweed | 2 | 1 | |
| 268 | Caryophyllaceae | Loeflingia squarrosa | spreading loeflingia | 3 | 4 | 1 |
| 269 | Caryophyllaceae | Minuartia douglasii | Douglas' sandwort | 1 | 1 | 1 |
| 270 | Caryophyllaceae | Silene antirrhina | snapdragon campion | 2 | 1 | |
| 271 | Caryophyllaceae | Spergularia bocconei | *sand spurrey | 2 | ||
| 272 | Caryophyllaceae | Spergularia rubra | *red sandspurry | 1 | 1 | |
| 273 | Caryophyllaceae | Stellaria media | *common chickweed | 4 | 1 | |
| 274 | Chenopodiaceae | Atriplex canescens ssp. canescens | four-wing saltbush | 3 | 6 | 2 |
| 275 | Chenopodiaceae | Chenopodium ambrosioides | *Mexican tea | 1 | 2 | 1 |
| 276 | Chenopodiaceae | Chenopodium berlandieri | pit-seed goosefoot | 2 | 4 | 2 |
| 277 | Chenopodiaceae | Chenopodium botrys | *Jerusalem oak | 1 | 1 | |
| 278 | Chenopodiaceae | Chenopodium californicum | California goosefoot | 3 | 1 | |
| 279 | Chenopodiaceae | Chenopodium murale | *nettle-leaved goosefoot | 1 | 1 | |
| 280 | Chenopodiaceae | Chenopodium pumilio | *clammy goosefoot | 1 | 1 | |
| 281 | Chenopodiaceae | Cycloloma atriplicifolium | *winged pigweed | 2 | 1 | |
| 282 | Chenopodiaceae | Grayia spinosa | hop-sage | 3 | 1 | |
| 283 | Chenopodiaceae | Salsola paulsenii | *Paulsen's Russian thistle | 1 | 1 | |
| 284 | Convolvulaceae | Calystegia macrostegia ssp. arida | southern California morning-glory | 2 | 1 | |
| 285 | Convolvulaceae | Calystegia occidentalis ssp. fulcrata | western morning-glory | 3 | 1 | |
| 286 | Cornaceae | Cornus glabrata | brown dogwood | 3 | 9 | |
| 287 | Crassulaceae | Crassula connata | pygmy-weed | 5 | 1 | |
| 288 | Crassulaceae | Dudleya lanceolata | lanceleaf dudleya | 4 | 5 | 1 |
| 289 | Crassulaceae | Dudleya saxosa ssp. aloides | desert dudleya | 18 | 9 | 1 |
| 290 | Crassulaceae | Sedum spathulifolium | yellow stonecrop | 1 | 2 | |
| 291 | Crossosomataceae | Crossosoma bigelovii | rock crossosoma | 24 | 2 | 1 |
| 292 | Cucurbitaceae | Cucurbita digitata | finger-leaved gourd | 2 | ||
| 293 | Cucurbitaceae | Cucurbita foetidissima | stinking gourd | 2 | 1 | |
| 294 | Cucurbitaceae | Cucurbita palmata | coyote melon | 3 | ||
| 295 | Cucurbitaceae | Marah macrocarpus var. macrocarpus | wild-cucumber | 2 | 10 | 1 |
| 296 | Cuscutaceae | Cuscuta californica | California dodder | 1 | ||
| 297 | Cuscutaceae | Cuscuta subinclusa | canyon dodder | 1 | 1 | |
| 298 | Datiscaceae | Datisca glomerata | Durango root | 2 | 1 | |
| 299 | Ericaceae | Arctostaphylos glandulosa | Eastwood manzanita | 2 | 1 | |
| 300 | Ericaceae | Arctostaphylos glauca | bigberry manzanita | 1 | 5 | 1 |
| 301 | Ericaceae | Arctostaphylos pungens | Mexican manzanita | 1 | 1 | |
| 302 | Ericaceae | Pyrola picta | white-veined wintergreen | 1 | 1 | |
| 303 | Euphorbiaceae | Bernardia myricifolia | western bernardia | 1 | 1 | 2 |
| 304 | Euphorbiaceae | Chamaesyce maculata | *spotted spurge | 2 | 1 | |
| 305 | Euphorbiaceae | Chamaesyce polycarpa | small-seeded spurge | 11 | 1 | 2 |
| 306 | Euphorbiaceae | Chamaesyce serpyllifolia | thyme-leafed spurge | 5 | 1 | |
| 307 | Euphorbiaceae | Croton californicus | California croton | 13 | 13 | 1 |
| 308 | Euphorbiaceae | Ditaxis lanceolata | narrowleaf ditaxis | 1 | 1 | |
| 309 | Euphorbiaceae | Ditaxis neomexicana | New Mexico ditaxis | 1 | 9 | |
| 310 | Euphorbiaceae | Ditaxis serrata | Yuma ditaxis | 3 | ||
| 311 | Euphorbiaceae | Eremocarpus setigerus | dove weed | 5 | 1 | |
| 312 | Euphorbiaceae | Euphorbia misera | cliff spurge | 7 | 1 | |
| 313 | Euphorbiaceae | Euphorbia palmeri | woodland spurge | 1 | 1 | |
| 314 | Euphorbiaceae | Euphorbia peplus | *petty spurge | 1 | 1 | |
| 315 | Euphorbiaceae | Stillingia linearifolia | linear-leaved stillingia | 14 | 15 | 1 |
| 316 | Euphorbiaceae | Stillingia spinulosa | annual stillingia | 1 | ||
| 317 | Fabaceae | Acacia greggii | catclaw | 1 | 6 | 1 |
| 318 | Fabaceae | Amorpha californica var. californica | California false-indigo | 5 | 2 | |
| 319 | Fabaceae | Amorpha fruticosa | western false-indigo | 1 | 1 | |
| 320 | Fabaceae | Astragalus didymocarpus | dwarf white milk-vetch | 1 | 1 | |
| 321 | Fabaceae | Astragalus didymocarpus var. dispermus | dwarf white milk-vetch | 1 | ||
| 322 | Fabaceae | Astragalus douglasii | Jacumba milk-vetch | 1 | 1 | |
| 323 | Fabaceae | Astragalus lentiginosus var. borreganus | Borrego milk-vetch | 1 | ||
| 324 | Fabaceae | Astragalus lentiginosus var. coachellae | Coachella Valley milk-vetch | 12 | 5 | 1 |
| 325 | Fabaceae | Astragalus pachypus var. jaegeri | Jaeger's milk-vetch | 2 | ||
| 326 | Fabaceae | Astragalus palmeri | Palmer's milk-vetch | 2 | 1 | |
| 327 | Fabaceae | Astragalus pomonensis | Pomona locoweed | 4 | 1 | |
| 328 | Fabaceae | Astragalus tricarinatus | triple-ribbed milk-vetch | 12 | 1 | |
| 329 | Fabaceae | Glycyrrhiza lepidota | wild licorice | 1 | 2 | |
| 330 | Fabaceae | Hoita macrostachya | leather root | 1 | 1 | |
| 331 | Fabaceae | Lathyrus vestitus | common Pacific pea | 5 | ||
| 332 | Fabaceae | Lathyrus vestitus var. alefeldii | San Diego pea | 2 | ||
| 333 | Fabaceae | Lathyrus vestitus var. vestitus | wild sweetpea | 2 | 1 | |
| 334 | Fabaceae | Lotus argophyllus var. argophyllus | southern California silver-lotus | 11 | 7 | 2 |
| 335 | Fabaceae | Lotus crassifolius var. crassifolius | broad-leaved lotus | 1 | 2 | |
| 336 | Fabaceae | Lotus grandiflorus | chaparral lotus | 3 | ||
| 337 | Fabaceae | Lotus hamatus | San Diego birdsfoot lotus | 1 | 1 | |
| 338 | Fabaceae | Lotus heermannii var. heermannii | silky lotus | 6 | 3 | 1 |
| 339 | Fabaceae | Lotus oblongifolius var. oblongifolius | streambank lotus | 3 | 1 | |
| 340 | Fabaceae | Lotus procumbens var. procumbens | silky California broom | 2 | 2 | 1 |
| 341 | Fabaceae | Lotus purshianus var. purshianus | Spanish clover | 5 | 2 | |
| 342 | Fabaceae | Lotus scoparius var. brevialatus | short-winged deerweed | 11 | 7 | 1 |
| 343 | Fabaceae | Lotus strigosus | strigose lotus | 11 | 25 | 1 |
| 344 | Fabaceae | Lotus wrangelianus | California lotus | 1 | 1 | 1 |
| 345 | Fabaceae | Lupinus albifrons var. albifrons | silver bush lupine | 2 | ||
| 346 | Fabaceae | Lupinus arizonicus | Arizona lupine | 3 | 1 | |
| 347 | Fabaceae | Lupinus bicolor | dwarf lupine | 2 | 24 | 1 |
| 348 | Fabaceae | Lupinus concinnus | bajada lupine | 3 | 15 | 1 |
| 349 | Fabaceae | Lupinus excubitus var. austromontanus | mountain grape-soda lupine | 3 | 1 | |
| 350 | Fabaceae | Lupinus excubitus var. hallii | bush lupine | 1 | 3 | 1 |
| 351 | Fabaceae | Lupinus formosus var. formosus | western lupine | 4 | ||
| 352 | Fabaceae | Lupinus hirsutissimus | stinging lupine | 5 | 14 | 1 |
| 353 | Fabaceae | Lupinus latifolius var. parishii | Parish's lupine | 1 | ||
| 354 | Fabaceae | Lupinus microcarpus var. densiflorus | chick lupine | 2 | 4 | 1 |
| 355 | Fabaceae | Lupinus shockleyi | desert lupine | 3 | ||
| 356 | Fabaceae | Lupinus sparsiflorus | Coulter's lupine | 16 | 21 | 1 |
| 357 | Fabaceae | Lupinus succulentus | arroyo lupine | 1 | 1 | |
| 358 | Fabaceae | Lupinus truncatus | collar lupine | 6 | 5 | 1 |
| 359 | Fabaceae | Medicago lupulina | *black medick | 1 | 1 | |
| 360 | Fabaceae | Medicago polymorpha | *California burclover | 3 | 1 | |
| 361 | Fabaceae | Melilotus indicus | *sourclover | 2 | 1 | |
| 362 | Fabaceae | Prosopis glandulosa var. torreyana | honey mesquite | 3 | 3 | |
| 363 | Fabaceae | Prosopis pubescens | screw-bean mesquite | 1 | ||
| 364 | Fabaceae | Psorothamnus arborescens var. simplicifolius | California indigo-bush | 10 | 5 | 1 |
| 365 | Fabaceae | Psorothamnus emoryi | Emory's indigo-bush | 2 | ||
| 366 | Fabaceae | Psorothamnus schottii | indigo bush | 1 | ||
| 367 | Fabaceae | Psorothamnus spinosus | smoke tree | 1 | ||
| 368 | Fabaceae | Robinia pseudoacacia | *black locust | 1 | 1 | |
| 369 | Fabaceae | Rupertia rigida | Parish's rupertia | 1 | 1 | |
| 370 | Fabaceae | Trifolium albopurpureum | Indian clover | 4 | ||
| 371 | Fabaceae | Trifolium ciliolatum | tree clover | 2 | 1 | |
| 372 | Fabaceae | Trifolium gracilentum var. gracilentum | pin-point clover | 4 | 2 | |
| 373 | Fabaceae | Trifolium hirtum | *rose clover | 1 | 1 | |
| 374 | Fabaceae | Trifolium microcephalum | small-head field clover | 5 | 1 | |
| 375 | Fabaceae | Trifolium obtusiflorum | creek clover | 1 | 3 | |
| 376 | Fabaceae | Trifolium variegatum | variegated clover | 3 | 1 | |
| 377 | Fabaceae | Trifolium willdenovii | tomcat clover | 8 | 1 | |
| 378 | Fabaceae | Trifolium wormskioldii | cows clover | 2 | 1 | |
| 379 | Fabaceae | Vicia villosa | *purple vetch | 2 | 1 | |
| 380 | Fagaceae | Quercus agrifolia | coast live oak | 2 | 1 | |
| 381 | Fagaceae | Quercus berberidifolia | scrub oak | 5 | 1 | |
| 382 | Fagaceae | Quercus chrysolepis | canyon live oak | 5 | 1 | |
| 383 | Fagaceae | Quercus cornelius-mulleri | desert scrub oak | 1 | 1 | |
| 384 | Fagaceae | Quercus kelloggii | California black oak | 1 | 1 | |
| 385 | Fagaceae | Quercus wislizeni var. frutescens | interior live oak | 15 | 1 | |
| 386 | Garryaceae | Garrya flavescens | ashy silk tassel | 4 | 1 | |
| 387 | Garryaceae | Garrya veatchii | canyon silktassel | 4 | 1 | |
| 388 | Gentianaceae | Centaurium venustum | canchalagua | 1 | 1 | 1 |
| 389 | Gentianaceae | Eustoma exaltatum | catchfly prairie-gentian | 2 | 1 | |
| 390 | Gentianaceae | Swertia parryi | Parry's green-gentian | 6 | 1 | |
| 391 | Geraniaceae | Erodium botrys | *long-beaked filaree | 9 | 1 | |
| 392 | Geraniaceae | Erodium brachycarpum | *short-fruited filaree | 4 | 9 | |
| 393 | Geraniaceae | Erodium cicutarium | *redstem filaree | 4 | 1 | |
| 394 | Geraniaceae | Erodium moschatum | *white-stemmed filaree | 1 | 1 | |
| 395 | Grossulariaceae | Ribes indecorum | white-flowering currant | 6 | 1 | |
| 396 | Grossulariaceae | Ribes malvaceum var. viridifolium | chaparral currant | 2 | 2 | |
| 397 | Grossulariaceae | Ribes roezlii var. roezlii | Sierra gooseberry | 3 | 1 | |
| 398 | Hydrophyllaceae | Emmenanthe penduliflora var. penduliflora | whispering bells | 9 | 5 | 2 |
| 399 | Hydrophyllaceae | Eriodictyon crassifolium var. crassifolium | thick-leaved yerba santa | 1 | 11 | |
| 400 | Hydrophyllaceae | Eriodictyon trichocalyx var. trichocalyx | smoothleaf yerba santa | 6 | 7 | 1 |
| 401 | Hydrophyllaceae | Eucrypta chrysanthemifolia var. bipinnatifida | eucrypta | 1 | ||
| 402 | Hydrophyllaceae | Eucrypta chrysanthemifolia var. chrysanthemifolia | eucrypta | 8 | ||
| 403 | Hydrophyllaceae | Nama demissum var. demissum | purple mat | 13 | 1 | 1 |
| 404 | Hydrophyllaceae | Nemophila menziesii | baby blue eyes | 13 | ||
| 405 | Hydrophyllaceae | Nemophila menziesii var. integrifolia | baby blue eyes | 2 | 1 | |
| 406 | Hydrophyllaceae | Phacelia brachyloba | short-lobed phacelia | 6 | 1 | |
| 407 | Hydrophyllaceae | Phacelia campanularia | desert bluebells | 16 | 3 | 1 |
| 408 | Hydrophyllaceae | Phacelia campanularia ssp. campanularia | desert bluebells | 11 | 3 | |
| 409 | Hydrophyllaceae | Phacelia cicutaria var. hispida | caterpillar phacelia | 4 | 1 | |
| 410 | Hydrophyllaceae | Phacelia crenulata var. minutiflora | little-flowered heliotrope phacelia | 1 | ||
| 411 | Hydrophyllaceae | Phacelia cryptantha | limestone phacelia | 2 | 1 | 1 |
| 412 | Hydrophyllaceae | Phacelia curvipes | curve-stem phacelia | 2 | 1 | |
| 413 | Hydrophyllaceae | Phacelia davidsonii | Davidson's phacelia | 1 | 1 | |
| 414 | Hydrophyllaceae | Phacelia distans | common phacelia | 12 | 25 | 1 |
| 415 | Hydrophyllaceae | Phacelia douglasii | Douglas' phacelia | 2 | 1 | |
| 416 | Hydrophyllaceae | Phacelia imbricata | imbricate phacelia | 3 | 1 | |
| 417 | Hydrophyllaceae | Phacelia minor | wild canterbury bells | 8 | 8 | 1 |
| 418 | Hydrophyllaceae | Phacelia parryi | Parry's phacelia | 3 | 1 | |
| 419 | Hydrophyllaceae | Phacelia ramosissima var. latifolia | branching phacelia | 3 | 1 | |
| 420 | Hydrophyllaceae | Pholistoma membranaceum | white fiesta flower | 11 | 7 | 1 |
| 421 | Hydrophyllaceae | Tricardia watsonii | three-hearts | 2 | 1 | |
| 422 | Juglandaceae | Juglans californica | Southern California black walnut | 3 | ||
| 423 | Juglandaceae | Juglans nigra | *black walnut | 10 | ||
| 424 | Krameriaceae | Krameria grayi | white rhatany | 10 | 3 | 1 |
| 425 | Lamiaceae | Agastache urticifolia | nettle-leaf giant hyssop | 1 | 1 | |
| 426 | Lamiaceae | Lamium amplexicaule | *henbit | 2 | 1 | |
| 427 | Lamiaceae | Marrubium vulgare | *horehound | 1 | 1 | |
| 428 | Lamiaceae | Monardella lanceolata | mustang mint | 3 | 1 | |
| 429 | Lamiaceae | Salazaria mexicana | Mexican bladder sage | 1 | 1 | |
| 430 | Lamiaceae | Salvia apiana | white sage | 8 | 11 | 1 |
| 431 | Lamiaceae | Salvia columbariae | chia | 6 | 11 | 1 |
| 432 | Lamiaceae | Salvia mellifera | black sage | 5 | 1 | |
| 433 | Lamiaceae | Salvia vaseyi | Vasey's sage | 1 | 1 | |
| 434 | Lamiaceae | Stachys ajugoides var. rigida | rigid hedge-nettle | 1 | 1 | |
| 435 | Lamiaceae | Stachys albens | cobwebby hedge-nettle | 1 | 1 | |
| 436 | Lamiaceae | Trichostema lanceolatum | vinegar weed | 2 | 1 | |
| 437 | Lamiaceae | Trichostema parishii | Parish's bluecurls | 4 | 1 | |
| 438 | Linaceae | Linum lewisii var. lewisii | Lewis' flax | 2 | 2 | |
| 439 | Linaceae | Linum usitatissimum | *common flax | 2 | 1 | 1 |
| 440 | Loasaceae | Mentzelia involucrata | bracted blazing star | 16 | 1 | |
| 441 | Loasaceae | Mentzelia laevicaulis | giant blazing star | 3 | 2 | 1 |
| 442 | Loasaceae | Mentzelia tricuspis | three-pointed blazing star | 1 | ||
| 443 | Loasaceae | Mentzelia veatchiana | Veatch's blazing star | 1 | 1 | |
| 444 | Loasaceae | Petalonyx thurberi ssp. thurberi | Thurber's sandpaper-plant | 3 | ||
| 445 | Lythraceae | Lythrum californicum | California loosestrife | 2 | 1 | |
| 446 | Malvaceae | Eremalche exilis | white mallow | 2 | 1 | |
| 447 | Malvaceae | Malacothamnus fasciculatus | chaparral bush mallow | 1 | 1 | |
| 448 | Malvaceae | Malva parviflora | *cheeseweed | 1 | 1 | |
| 449 | Malvaceae | Sidalcea malviflora ssp. sparsifolia | checkerbloom | 3 | 1 | |
| 450 | Malvaceae | Sphaeralcea ambigua | apricot mallow | 1 | 1 | 1 |
| 451 | Malvaceae | Sphaeralcea ambigua var. ambigua | apricot mallow | 1 | ||
| 452 | Malvaceae | Sphaeralcea ambigua var. rosacea | rosy apricot mallow | 1 | ||
| 453 | Martyniaceae | Proboscidea althaeifolia | desert unicorn-plant | 2 | ||
| 454 | Martyniaceae | Proboscidea parviflora var. hohokamiana | devil's claw | 1 | ||
| 455 | Myrtaceae | Eucalyptus camaldulensis | *Red River gum | 1 | 1 | |
| 456 | Nyctaginaceae | Abronia villosa | hairy sand verbena | 6 | 2 | 1 |
| 457 | Nyctaginaceae | Abronia villosa var. aurita | hairy sand verbena | 3 | 3 | |
| 458 | Nyctaginaceae | Abronia villosa var. villosa | hairy sand-verbena | 1 | 3 | |
| 459 | Nyctaginaceae | Boerhavia coccinea | scarlet spiderling | 1 | 1 | |
| 460 | Nyctaginaceae | Boerhavia triquetra | slender spiderling | 1 | 1 | |
| 461 | Nyctaginaceae | Mirabilis bigelovii | Bigelow's desert four-o'clock | 1 | 1 | |
| 462 | Nyctaginaceae | Mirabilis bigelovii var. bigelovii | Bigelow's desert four-o'clock | 1 | 1 | |
| 463 | Nyctaginaceae | Mirabilis bigelovii var. retrorsa | Bigelow's desert four-o'clock | 13 | 2 | |
| 464 | Nyctaginaceae | Mirabilis californica | California four o'clock | 6 | 6 | 1 |
| 465 | Oleaceae | Fraxinus dipetala | two-petaled ash | 10 | 1 | |
| 466 | Oleaceae | Fraxinus velutina | velvet ash | 1 | 10 | 1 |
| 467 | Oleaceae | Olea europaea | *olive | 2 | 1 | |
| 468 | Oleaceae | Syringa vulgaris | *cultivated lilac | 2 | 1 | |
| 469 | Onagraceae | Camissonia bistorta | southern suncup | 5 | 12 | 1 |
| 470 | Onagraceae | Camissonia boothii ssp. desertorum | Booth's evening primrose | 1 | 1 | |
| 471 | Onagraceae | Camissonia californica | California suncup | 8 | 14 | 1 |
| 472 | Onagraceae | Camissonia cardiophylla | heartleaf sun-cup | 1 | 1 | 1 |
| 473 | Onagraceae | Camissonia claviformis | brown-eyed primrose | 3 | 1 | |
| 474 | Onagraceae | Camissonia claviformis ssp. aurantiaca | brown-eyed primrose | 10 | 2 | |
| 475 | Onagraceae | Camissonia confusa | San Bernardino sun-cup | 6 | 16 | 1 |
| 476 | Onagraceae | Camissonia hirtella | field sun-cup | 1 | 12 | 1 |
| 477 | Onagraceae | Camissonia pallida | pale-yellow sun-cup | 5 | 9 | 1 |
| 478 | Onagraceae | Camissonia pallida ssp. hallii | Hall's sun-cup | 5 | 8 | |
| 479 | Onagraceae | Camissonia pallida ssp. pallida | pale sun-cup | 15 | 6 | |
| 480 | Onagraceae | Camissonia strigulosa | strigose sun-cup | 12 | 1 | |
| 481 | Onagraceae | Clarkia dudleyana | Dudley's clarkia | 10 | 1 | |
| 482 | Onagraceae | Clarkia purpurea ssp. quadrivulnera | purple clarkia | 5 | 1 | |
| 483 | Onagraceae | Clarkia rhomboidea | diamond-petaled clarkia | 4 | 1 | |
| 484 | Onagraceae | Clarkia similis | Ramona clarkia | 2 | ||
| 485 | Onagraceae | Epilobium canum ssp. latifolium | mountain California-fuchsia | 4 | 5 | 1 |
| 486 | Onagraceae | Epilobium ciliatum ssp. ciliatum | willowherb | 1 | 1 | 1 |
| 487 | Onagraceae | Oenothera californica ssp. californica | California evening-primrose | 4 | 2 | |
| 488 | Onagraceae | Oenothera deltoides ssp. deltoides | dune primrose | 3 | 2 | |
| 489 | Onagraceae | Oenothera elata ssp. hirsutissima | Hooker's evening-primrose | 4 | 1 | |
| 490 | Onagraceae | Oenothera elata ssp. hookeri | Hooker's evening-primrose | 1 | ||
| 491 | Orobanchaceae | Orobanche bulbosa | chaparral broomrape | 1 | 1 | |
| 492 | Orobanchaceae | Orobanche fasciculata | clustered broom-rape | 4 | 1 | |
| 493 | Papaveraceae | Argemone munita | prickly poppy | 5 | 1 | |
| 494 | Papaveraceae | Dendromecon rigida | bush poppy | 1 | 13 | 1 |
| 495 | Papaveraceae | Dicentra chrysantha | golden ear drops | 7 | 1 | |
| 496 | Papaveraceae | Eschscholzia californica | California poppy | 3 | 1 | |
| 497 | Papaveraceae | Eschscholzia minutiflora ssp. minutiflora | small-flowered poppy | 4 | 1 | 2 |
| 498 | Papaveraceae | Eschscholzia parishii | Parish's poppy | 12 | 1 | 1 |
| 499 | Papaveraceae | Meconella denticulata | small-flowered meconella | 2 | 9 | |
| 500 | Papaveraceae | Papaver californicum | fire poppy | 2 | 1 | |
| 501 | Papaveraceae | Platystemon californicus | cream cups | 2 | 1 | |
| 502 | Plantaginaceae | Plantago erecta | California plantain | 1 | 3 | 1 |
| 503 | Plantaginaceae | Plantago lanceolata | *English plantain | 1 | 1 | |
| 504 | Plantaginaceae | Plantago major | *common plantain | 1 | 1 | 1 |
| 505 | Plantaginaceae | Plantago ovata | desert plantain | 5 | 3 | 1 |
| 506 | Plantaginaceae | Plantago patagonica | Patagonia plantain | 2 | 16 | 1 |
| 507 | Platanaceae | Platanus racemosa | western sycamore | 6 | 1 | |
| 508 | Polemoniaceae | Allophyllum divaricatum | purple false-gilia | 3 | 1 | |
| 509 | Polemoniaceae | Allophyllum gilioides | dense false-gilia | 1 | ||
| 510 | Polemoniaceae | Collomia grandiflora | large-flowered collomia | 3 | 1 | |
| 511 | Polemoniaceae | Eriastrum densifolium | giant woolly-star | 2 | ||
| 512 | Polemoniaceae | Eriastrum densifolium ssp. austromontanum | southern mountain woolly-star | 1 | 1 | |
| 513 | Polemoniaceae | Eriastrum densifolium ssp. elongatum | giant woolly-star | 1 | 9 | |
| 514 | Polemoniaceae | Eriastrum diffusum | miniature woolly-star | 1 | 4 | 1 |
| 515 | Polemoniaceae | Eriastrum eremicum ssp. eremicum | desert woolly-star | 6 | 3 | 2 |
| 516 | Polemoniaceae | Eriastrum sapphirinum | sapphire woolly-star | 2 | 14 | 1 |
| 517 | Polemoniaceae | Gilia angelensis | angel's gilia | 4 | 28 | 1 |
| 518 | Polemoniaceae | Gilia australis | southern gilia | 4 | 5 | 1 |
| 519 | Polemoniaceae | Gilia capitata ssp. abrotanifolia | globe gilia | 8 | 4 | 1 |
| 520 | Polemoniaceae | Gilia maculata | Little San Bernardino Mtns. gilia | 8 | 1 | |
| 521 | Polemoniaceae | Gilia minor | little gilia | 2 | ||
| 522 | Polemoniaceae | Gilia ochroleuca | volcanic gilia | 6 | ||
| 523 | Polemoniaceae | Gilia ochroleuca ssp. bizonata | volcanic gilia | 1 | 1 | 1 |
| 524 | Polemoniaceae | Gilia ochroleuca ssp. exilis | volcanic gilia | 6 | 6 | 1 |
| 525 | Polemoniaceae | Gilia ochroleuca ssp. ochroleuca | volcanic gilia | 1 | 1 | |
| 526 | Polemoniaceae | Gilia splendens ssp. splendens | splendid gilia | 2 | 10 | 1 |
| 527 | Polemoniaceae | Gilia stellata | star gilia | 2 | 1 | 1 |
| 528 | Polemoniaceae | Langloisia setosissima ssp. punctata | lilac sunbonnet | 1 | 1 | |
| 529 | Polemoniaceae | Langloisia setosissima ssp. setosissima | bristly langloisia | 1 | ||
| 530 | Polemoniaceae | Leptodactylon californicum | prickly phlox | 1 | ||
| 531 | Polemoniaceae | Linanthus androsaceus | showy linanthus | 4 | ||
| 532 | Polemoniaceae | Linanthus bigelovii | Bigelow's linanthus | 2 | 1 | |
| 533 | Polemoniaceae | Linanthus dianthiflorus | ground pink | 7 | 9 | 1 |
| 534 | Polemoniaceae | Linanthus floribundus ssp. glaber | summer snow | 1 | 1 | |
| 535 | Polemoniaceae | Linanthus lemmonii | Lemmon's linanthus | 3 | 6 | 1 |
| 536 | Polemoniaceae | Linanthus liniflorus | flax-flowered linanthus | 2 | 4 | 2 |
| 537 | Polemoniaceae | Linanthus parryae | sand-blossoms | 1 | 1 | |
| 538 | Polemoniaceae | Linanthus parviflorus | common linanthus | 1 | 4 | 1 |
| 539 | Polemoniaceae | Loeseliastrum matthewsii | desert calico | 2 | 1 | |
| 540 | Polemoniaceae | Loeseliastrum schottii | Schott's calico | 6 | 1 | |
| 541 | Polemoniaceae | Navarretia atractyloides | holly-leaf navarretia | 2 | 1 | |
| 542 | Polemoniaceae | Navarretia hamata | hooked skunkweed | 1 | ||
| 543 | Polygonaceae | Chorizanthe brevicornu var. brevicornu | brittle spineflower | 8 | 1 | 1 |
| 544 | Polygonaceae | Chorizanthe parryi var. parryi | Parry's spineflower | 6 | 13 | 1 |
| 545 | Polygonaceae | Chorizanthe uniaristata | one-awn spineflower | 1 | ||
| 546 | Polygonaceae | Chorizanthe watsonii | Watson's spineflower | 2 | 1 | |
| 547 | Polygonaceae | Chorizanthe xanti var. leucotheca | white-bracted spineflower | 13 | 15 | 2 |
| 548 | Polygonaceae | Dodecahema leptoceras | slender-horned spineflower | 1 | 1 | |
| 549 | Polygonaceae | Eriogonum davidsonii | Davidson's buckwheat | 1 | 3 | 1 |
| 550 | Polygonaceae | Eriogonum elongatum var. elongatum | long-stemmed buckwheat | 3 | 7 | 1 |
| 551 | Polygonaceae | Eriogonum fasciculatum | California buckwheat | 1 | ||
| 552 | Polygonaceae | Eriogonum fasciculatum var. foliolosum | California buckwheat | 4 | 1 | |
| 553 | Polygonaceae | Eriogonum fasciculatum var. polifolium | California buckwheat | 7 | 7 | 1 |
| 554 | Polygonaceae | Eriogonum gracile | slender buckwheat | 1 | 3 | |
| 555 | Polygonaceae | Eriogonum gracile var. gracile | slender buckwheat | 1 | 3 | 1 |
| 556 | Polygonaceae | Eriogonum gracile var. incultum | slender buckwheat | 1 | ||
| 557 | Polygonaceae | Eriogonum inflatum | desert trumpet | 8 | 1 | 1 |
| 558 | Polygonaceae | Eriogonum palmerianum | Palmer's buckwheat | 1 | 1 | |
| 559 | Polygonaceae | Eriogonum pusillum | yellow-turbans | 18 | 1 | 1 |
| 560 | Polygonaceae | Eriogonum reniforme | kidney-leaf buckwheat | 2 | 1 | |
| 561 | Polygonaceae | Eriogonum saxatile | rock buckwheat | 1 | 1 | |
| 562 | Polygonaceae | Eriogonum thomasii | Thomas' buckwheat | 12 | 1 | |
| 563 | Polygonaceae | Eriogonum thurberi | Thurber's buckwheat | 7 | 6 | 1 |
| 564 | Polygonaceae | Eriogonum trichopes | little desert trumpet | 2 | 9 | |
| 565 | Polygonaceae | Eriogonum wrightii | Wright's buckwheat | 1 | ||
| 566 | Polygonaceae | Eriogonum wrightii var. nodosum | Wright's buckwheat | 13 | 4 | 1 |
| 567 | Polygonaceae | Eriogonum wrightii var. subscaposum | Wright's buckwheat | 1 | 1 | |
| 568 | Polygonaceae | Lastarriaea coriacea | leather spineflower | 2 | 2 | |
| 569 | Polygonaceae | Nemacaulis denudata var. gracilis | slender woolly-heads | 2 | ||
| 570 | Polygonaceae | Polygonum arenastrum | *knotweed | 1 | 1 | |
| 571 | Polygonaceae | Polygonum lapathifolium | willow weed | 3 | 1 | |
| 572 | Polygonaceae | Polygonum punctatum | punctate smartweed | 1 | 1 | 1 |
| 573 | Polygonaceae | Pterostegia drymarioides | threadstem | 5 | 3 | 1 |
| 574 | Polygonaceae | Rumex acetosella | *common sheep sorrel | 1 | 1 | |
| 575 | Polygonaceae | Rumex hymenosepalus | wild rhubarb | 6 | 1 | |
| 576 | Polygonaceae | Rumex obtusifolius | *bitter dock | 1 | ||
| 577 | Polygonaceae | Rumex salicifolius | willow-leaved dock | 3 | ||
| 578 | Polygonaceae | Rumex salicifolius var. denticulatus | willow-leaved dock | 1 | 1 | |
| 579 | Portulacaceae | Calandrinia ciliata | red maids | 8 | 1 | |
| 580 | Portulacaceae | Calyptridium monandrum | sand cress | 4 | 8 | 1 |
| 581 | Portulacaceae | Claytonia parviflora | narrow-leaved miner's lettuce | 1 | ||
| 582 | Portulacaceae | Claytonia parviflora ssp. parviflora | narrow-leaved miner's lettuce | 3 | ||
| 583 | Portulacaceae | Claytonia parviflora ssp. viridis | green miner's lettuce | 1 | ||
| 584 | Portulacaceae | Claytonia perfoliata | miner's lettuce | 2 | 1 | |
| 585 | Portulacaceae | Claytonia perfoliata ssp. mexicana | southern miner's lettuce | 1 | ||
| 586 | Portulacaceae | Claytonia perfoliata ssp. perfoliata | miner's lettuce | 1 | ||
| 587 | Primulaceae | Anagallis arvensis | *scarlet pimpernel | 1 | 1 | |
| 588 | Ranunculaceae | Aquilegia formosa | western columbine | 3 | 1 | |
| 589 | Ranunculaceae | Clematis lasiantha | virgin's bower | 4 | 1 | |
| 590 | Ranunculaceae | Clematis ligusticifolia | virgin's bower | 1 | 2 | 1 |
| 591 | Ranunculaceae | Clematis pauciflora | virgin's bower | 1 | 4 | 9 |
| 592 | Ranunculaceae | Delphinium parishii ssp. parishii | Parish's larkspur | 5 | 5 | 1 |
| 593 | Ranunculaceae | Delphinium parryi ssp. parryi | blue larkspur | 14 | 1 | |
| 594 | Ranunculaceae | Ranunculus californicus | California buttercup | 1 | 1 | |
| 595 | Ranunculaceae | Thalictrum fendleri | Fendler's meadow-rue | 1 | ||
| 596 | Resedaceae | Oligomeris linifolia | lineleaf whitepuff | 1 | ||
| 597 | Rhamnaceae | Ceanothus crassifolius | hoaryleaf ceanothus | 1 | 1 | |
| 598 | Rhamnaceae | Ceanothus cuneatus var. cuneatus | buck brush | 2 | 1 | |
| 599 | Rhamnaceae | Ceanothus greggii var. perplexans | cupped-leaf ceanothus | 2 | 13 | 1 |
| 600 | Rhamnaceae | Ceanothus integerrimus | deer brush | 2 | 1 | |
| 601 | Rhamnaceae | Ceanothus leucodermis | chaparral whitethorn | 1 | 6 | 1 |
| 602 | Rhamnaceae | Ceanothus oliganthus | hairy ceanothus | 2 | ||
| 603 | Rhamnaceae | Rhamnus californica | California coffeeberry | 2 | ||
| 604 | Rhamnaceae | Rhamnus ilicifolia | hollyleaf redberry | 3 | 7 | 1 |
| 605 | Rhamnaceae | Rhamnus tomentella ssp. cuspidata | Sierra hoary coffeeberry | 1 | 2 | |
| 606 | Rhamnaceae | Rhamnus tomentella ssp. ursina | desert hoary coffeeberry | 1 | ||
| 607 | Rhamnaceae | Ziziphus parryi var. parryi | lotebush | 8 | 12 | 1 |
| 608 | Rosaceae | Adenostoma fasciculatum | chamise | 1 | 6 | 1 |
| 609 | Rosaceae | Cercocarpus betuloides var. betuloides | birch-leaf mountain-mahogany | 1 | 1 | |
| 610 | Rosaceae | Potentilla glandulosa | sticky cinquefoil | 2 | ||
| 611 | Rosaceae | Prunus emarginata | bitter cherry | 1 | 1 | |
| 612 | Rosaceae | Prunus ilicifolia ssp. ilicifolia | hollyleaf cherry | 8 | 2 | |
| 613 | Rosaceae | Prunus virginiana var. demissa | western choke-cherry | 6 | 1 | |
| 614 | Rosaceae | Purshia tridentata var. glandulosa | desert bitterbrush | 1 | 1 | |
| 615 | Rosaceae | Purshia tridentata var. tridentata | antelope bitterbrush | 2 | ||
| 616 | Rosaceae | Rosa californica | California wild rose | 1 | 1 | |
| 617 | Rosaceae | Rubus ursinus | California blackberry | 3 | 1 | |
| 618 | Rubiaceae | Galium andrewsii ssp. andrewsii | phlox-leaved bedstraw | 1 | 1 | |
| 619 | Rubiaceae | Galium angustifolium | narrow-leaved bedstraw | 3 | ||
| 620 | Rubiaceae | Galium angustifolium ssp. angustifolium | narrowleaf bedstraw | 6 | 2 | |
| 621 | Rubiaceae | Galium angustifolium ssp. gracillimum | slender bedstraw | 2 | 1 | |
| 622 | Rubiaceae | Galium aparine | common bedstraw | 6 | 1 | |
| 623 | Rubiaceae | Galium jepsonii | Jepson's bedstraw | 1 | 5 | |
| 624 | Rubiaceae | Galium porrigens var. porrigens | graceful bedstraw | 2 | ||
| 625 | Rutaceae | Thamnosma montana | turpentine broom | 13 | 1 | |
| 626 | Salicaceae | Populus balsamifera ssp. trichocarpa X P. fremontii ssp. fremontii | hybrid cottonwood | 2 | ||
| 627 | Salicaceae | Populus fremontii ssp. fremontii | Fremont cottonwood | 5 | 4 | 2 |
| 628 | Salicaceae | Salix exigua | narrowleaf willow | 7 | 5 | 1 |
| 629 | Salicaceae | Salix gooddingii | black willow | 2 | 1 | |
| 630 | Salicaceae | Salix laevigata | red willow | 1 | 6 | 1 |
| 631 | Salicaceae | Salix lasiolepis | arroyo willow | 6 | 1 | |
| 632 | Salicaceae | Salix lucida ssp. lasiandra | shining willow | 1 | 1 | |
| 633 | Saxifragaceae | Boykinia rotundifolia | round-leaved boykinia | 1 | 1 | |
| 634 | Saxifragaceae | Heuchera hirsutissima | shaggy-haired alumroot | 1 | 1 | |
| 635 | Saxifragaceae | Lithophragma bolanderi | Bolander's woodland star | 1 | 5 | |
| 636 | Scrophulariaceae | Antirrhinum coulterianum | Coulter's snapdragon | 5 | 7 | 1 |
| 637 | Scrophulariaceae | Antirrhinum nuttallianum ssp. nuttallianum | purple snapdragon | 1 | 4 | 1 |
| 638 | Scrophulariaceae | Castilleja angustifolia | northwestern paintbrush | 1 | 1 | |
| 639 | Scrophulariaceae | Castilleja applegatei ssp. martinii | Martin's paintbrush | 7 | 1 | |
| 640 | Scrophulariaceae | Castilleja exserta ssp. exserta | purple owl's-clover | 2 | 12 | 2 |
| 641 | Scrophulariaceae | Castilleja foliolosa | woolly Indian paintbrush | 4 | 12 | 1 |
| 642 | Scrophulariaceae | Castilleja minor ssp. spiralis | lesser paintbrush | 4 | 3 | 1 |
| 643 | Scrophulariaceae | Collinsia concolor | southern Chinese houses | 5 | 5 | 1 |
| 644 | Scrophulariaceae | Collinsia heterophylla | Chinese houses | 4 | ||
| 645 | Scrophulariaceae | Collinsia parryi | Parry's collinsia | 1 | 1 | |
| 646 | Scrophulariaceae | Cordylanthus rigidus ssp. setigerus | bristly bird's beak | 1 | 3 | 1 |
| 647 | Scrophulariaceae | Keckiella antirrhinoides var. antirrhinoides | chaparral beard-tongue | 11 | 13 | 1 |
| 648 | Scrophulariaceae | Keckiella cordifolia | heartleaf penstemon | 3 | 1 | |
| 649 | Scrophulariaceae | Keckiella ternata var. ternata | whorledleaf penstemon | 5 | 1 | |
| 650 | Scrophulariaceae | Linaria bipartita | *split-lip toadflax | 1 | ||
| 651 | Scrophulariaceae | Mimulus aurantiacus | bush monkeyflower | 8 | 1 | |
| 652 | Scrophulariaceae | Mimulus brevipes | wide-throated yellow monkeyflower | 4 | 1 | |
| 653 | Scrophulariaceae | Mimulus cardinalis | scarlet monkeyflower | 1 | 3 | 1 |
| 654 | Scrophulariaceae | Mimulus floribundus | floriferous monkeyflower | 1 | 1 | |
| 655 | Scrophulariaceae | Mimulus fremontii | Fremont's monkeyflower | 2 | 1 | |
| 656 | Scrophulariaceae | Mimulus guttatus | common monkeyflower | 3 | 8 | 1 |
| 657 | Scrophulariaceae | Mimulus johnstonii | Johnston's monkeyflower | 2 | 1 | |
| 658 | Scrophulariaceae | Mimulus parishii | Parish's monkeyflower | 3 | 1 | |
| 659 | Scrophulariaceae | Mimulus pilosus | false monkeyflower | 1 | 6 | 1 |
| 660 | Scrophulariaceae | Pedicularis densiflora | Indian warrior | 2 | ||
| 661 | Scrophulariaceae | Penstemon centranthifolius | scarlet bugler | 11 | 1 | |
| 662 | Scrophulariaceae | Penstemon clevelandii var. connatus | San Jacinto beardtongue | 1 | ||
| 663 | Scrophulariaceae | Penstemon grinnellii var. grinnellii | Grinnell's beardtongue | 1 | 1 | |
| 664 | Scrophulariaceae | Penstemon heterophyllus | foothill penstemon | 2 | ||
| 665 | Scrophulariaceae | Penstemon spectabilis var. spectabilis | showy penstemon | 5 | 1 | |
| 666 | Scrophulariaceae | Penstemon Xparishii (P. centranthifolius X P. spectabilis var. spectabilis) | Parish's penstemon | 2 | ||
| 667 | Scrophulariaceae | Scrophularia californica ssp. floribunda | California bee plant | 3 | 2 | 1 |
| 668 | Scrophulariaceae | Veronica americana | American speedwell | 1 | 1 | |
| 669 | Scrophulariaceae | Veronica anagallis-aquatica | *water speedwell | 2 | 1 | |
| 670 | Simaroubaceae | Ailanthus altissima | *tree-of-heaven | 1 | 1 | |
| 671 | Simmondsiaceae | Simmondsia chinensis | jojoba | 1 | 1 | |
| 672 | Solanaceae | Datura wrightii | sacred datura | 3 | 5 | 1 |
| 673 | Solanaceae | Lycium andersonii | Anderson's desert-thorn | 4 | 5 | 1 |
| 674 | Solanaceae | Nicotiana acuminata var. multiflora | *many-flowered tobacco | 3 | 1 | |
| 675 | Solanaceae | Nicotiana attenuata | coyote tobacco | 1 | 1 | |
| 676 | Solanaceae | Nicotiana glauca | *tree tobacco | 3 | 1 | |
| 677 | Solanaceae | Nicotiana obtusifolia | desert tobacco | 2 | 1 | |
| 678 | Solanaceae | Nicotiana quadrivalvis | Indian tobacco | 3 | 1 | |
| 679 | Solanaceae | Petunia violacea | * | 1 | 1 | |
| 680 | Solanaceae | Physalis crassifolia | thick-leaved ground cherry | 4 | 3 | 1 |
| 681 | Solanaceae | Solanum douglasii | white nightshade | 3 | 2 | 1 |
| 682 | Solanaceae | Solanum elaeagnifolium | *horse-nettle | 2 | 1 | |
| 683 | Solanaceae | Solanum nigrum | *black nightshade | 1 | ||
| 684 | Solanaceae | Solanum parishii | Parish's purple nightshade | 3 | ||
| 685 | Solanaceae | Solanum xanti | purple nightshade | 6 | 1 | |
| 686 | Tamaricaceae | Tamarix chinensis | *Chinese tamarisk | 2 | ||
| 687 | Tamaricaceae | Tamarix ramosissima | *saltcedar | 3 | 1 | |
| 688 | Ulmaceae | Celtis reticulata | net-leaf hackberry | 8 | 1 | |
| 689 | Ulmaceae | Celtis sinensis | *Japanese hackberry | 1 | ||
| 690 | Urticaceae | Parietaria hespera var. californica | California pellitory | 1 | ||
| 691 | Urticaceae | Parietaria hespera var. hespera | pellitory | 1 | 1 | |
| 692 | Verbenaceae | Verbena lasiostachys var. lasiostachys | western vervain | 3 | 2 | |
| 693 | Violaceae | Viola pedunculata | johnny jump-up | 1 | 1 | |
| 694 | Violaceae | Viola purpurea | goosefoot violet | 1 | 1 | |
| 695 | Viscaceae | Phoradendron californicum | desert mistletoe | 9 | 7 | 1 |
| 696 | Viscaceae | Phoradendron densum | dense mistletoe | 1 | 1 | |
| 697 | Viscaceae | Phoradendron macrophyllum | big leaf mistletoe | 3 | 1 | |
| 698 | Viscaceae | Phoradendron villosum | oak mistletoe | 1 | 3 | 1 |
| 699 | Vitaceae | Vitis girdiana | wild grape | 2 | 3 | 1 |
| 700 | Zygophyllaceae | Larrea tridentata | creosote bush | 8 | 4 | 1 |
| 701 | Zygophyllaceae | Tribulus terrestris | *puncture-vine | 1 | 1 | |
| 702 | Cyperaceae | Carex alma | sturdy sedge | 3 | 1 | |
| 703 | Cyperaceae | Carex amplectens | clasping-bract sedge | 1 | ||
| 704 | Cyperaceae | Carex fracta | fragile sheath sedge | 1 | 1 | |
| 705 | Cyperaceae | Carex praegracilis | clustered field sedge | 6 | 1 | |
| 706 | Cyperaceae | Carex sartwelliana | Yosemite sedge | 1 | ||
| 707 | Cyperaceae | Carex schottii | Schott's sedge | 2 | 1 | |
| 708 | Cyperaceae | Carex senta | swamp sedge | 2 | 1 | |
| 709 | Cyperaceae | Cyperus niger | black flatsedge | 1 | 1 | |
| 710 | Cyperaceae | Cyperus parishii | Parish's flatsedge | 2 | 1 | |
| 711 | Cyperaceae | Cyperus squarrosus | bearded flatsedge | 1 | 3 | 1 |
| 712 | Cyperaceae | Eleocharis geniculata | bent spikerush | 5 | 1 | |
| 713 | Cyperaceae | Eleocharis montevidensis | sand spikerush | 1 | 2 | 1 |
| 714 | Cyperaceae | Eleocharis parishii | Parish's spikerush | 4 | 1 | |
| 715 | Cyperaceae | Eleocharis radicans | creeping spikerush | 1 | ||
| 716 | Cyperaceae | Lipocarpha micrantha | small-flowered hemicarpha | 1 | 1 | |
| 717 | Iridaceae | Iris hartwegii ssp. australis | southern Hartweg's iris | 3 | 1 | |
| 718 | Iridaceae | Iris pseudacorus | *water iris | 1 | ||
| 719 | Iridaceae | Sisyrinchium bellum | blue-eyed grass | 1 | 1 | |
| 720 | Juncaceae | Juncus balticus | wire rush | 4 | 1 | |
| 721 | Juncaceae | Juncus bufonius | toad rush | 1 | 2 | 1 |
| 722 | Juncaceae | Juncus macrophyllus | long-leaved rush | 1 | 1 | |
| 723 | Juncaceae | Juncus mexicanus | Mexican rush | 1 | 1 | |
| 724 | Juncaceae | Juncus oxymeris | pointed rush | 1 | 1 | |
| 725 | Juncaceae | Juncus rugulosus | wrinkled rush | 2 | 2 | 1 |
| 726 | Juncaceae | Juncus saximontanus | Rocky Mountain rush | 1 | 1 | |
| 727 | Juncaceae | Juncus textilis | basket rush | 2 | 1 | |
| 728 | Juncaceae | Juncus xiphioides | iris-leaved rush | 2 | 2 | 1 |
| 729 | Liliaceae | Allium fimbriatum var. fimbriatum | fringed onion | 1 | 1 | |
| 730 | Liliaceae | Allium haematochiton | red-skinned onion | 1 | 2 | |
| 731 | Liliaceae | Allium marvinii | Yucaipa onion | 3 | ||
| 732 | Liliaceae | Allium peninsulare var. peninsulare | Mexicali onion | 2 | ||
| 733 | Liliaceae | Bloomeria crocea | goldenstar | 2 | 1 | |
| 734 | Liliaceae | Calochortus concolor | golden-bowl mariposa | 5 | 1 | |
| 735 | Liliaceae | Calochortus plummerae | Plummer's mariposa lily | 3 | 1 | |
| 736 | Liliaceae | Calochortus splendens | splendid mariposa lily | 4 | 1 | |
| 737 | Liliaceae | Dichelostemma capitatum ssp. capitatum | blue dicks | 1 | 8 | 2 |
| 738 | Liliaceae | Dichelostemma capitatum ssp. pauciflorum | few-flowered blue dicks | 1 | ||
| 739 | Liliaceae | Muilla maritima | muilla | 1 | 7 | 1 |
| 740 | Liliaceae | Yucca schidigera | Mohave yucca | 3 | 5 | 1 |
| 741 | Liliaceae | Yucca whipplei | chaparral yucca | 5 | 1 | |
| 742 | Liliaceae | Zigadenus brevibracteatus | desert death-camas | 1 | 1 | |
| 743 | Orchidaceae | Epipactis gigantea | stream orchid | 3 | 5 | 1 |
| 744 | Poaceae | Achnatherum coronatum | giant needlegrass | 5 | 2 | |
| 745 | Poaceae | Achnatherum hymenoides | Indian ricegrass | 16 | 4 | 2 |
| 746 | Poaceae | Achnatherum speciosum | desert needlegrass | 2 | 4 | 1 |
| 747 | Poaceae | Agrostis viridis | *green bentgrass | 1 | 3 | 1 |
| 748 | Poaceae | Andropogon glomeratus var. scabriglumis | southwestern bushy bluestem | 6 | 1 | |
| 749 | Poaceae | Aristida purpurea var. nealleyi | Nealley three-awn | 2 | ||
| 750 | Poaceae | Arundo donax | *giant reed | 1 | 1 | |
| 751 | Poaceae | Avena barbata | *slender wild oats | 3 | 2 | 1 |
| 752 | Poaceae | Avena fatua | *wild oats | 1 | 1 | |
| 753 | Poaceae | Avena sativa | *common oats | 2 | 1 | |
| 754 | Poaceae | Bothriochloa barbinodis | cane bluestem | 1 | 1 | |
| 755 | Poaceae | Bromus arizonicus | Arizona brome | 5 | ||
| 756 | Poaceae | Bromus carinatus var. carinatus | California brome | 1 | 1 | |
| 757 | Poaceae | Bromus catharticus | *rescue grass | 1 | 1 | |
| 758 | Poaceae | Bromus diandrus | *ripgut brome | 3 | 8 | 1 |
| 759 | Poaceae | Bromus grandis | tall brome | 1 | 1 | |
| 760 | Poaceae | Bromus hordeaceus | *soft chess | 1 | 6 | 1 |
| 761 | Poaceae | Bromus madritensis ssp. rubens | *red brome | 6 | 8 | 1 |
| 762 | Poaceae | Bromus pseudolaevipes | southern chinook brome | 1 | ||
| 763 | Poaceae | Bromus tectorum | *downy brome | 2 | 1 | |
| 764 | Poaceae | Bromus trinii | *Chilean chess | 1 | 3 | 1 |
| 765 | Poaceae | Cenchrus echinatus | *southern sandbur | 1 | 1 | |
| 766 | Poaceae | Echinochloa colona | *jungle rice | 1 | 1 | |
| 767 | Poaceae | Elymus glaucus | blue wildrye | 5 | 1 | |
| 768 | Poaceae | Eragrostis cilianensis | *stinkgrass | 1 | 1 | |
| 769 | Poaceae | Eragrostis minor | *little lovegrass | 2 | 1 | |
| 770 | Poaceae | Eragrostis pectinacea var. pectinacea | tufted lovegrass | 3 | 1 | |
| 771 | Poaceae | Glyceria declinata | waxy mannagrass | 8 | ||
| 772 | Poaceae | Hordeum marinum ssp. gussoneanum | *Mediterranean barley | 2 | ||
| 773 | Poaceae | Hordeum murinum | *foxtail barley | 3 | 1 | |
| 774 | Poaceae | Hordeum murinum ssp. glaucum | *foxtail barley | 3 | ||
| 775 | Poaceae | Hordeum murinum ssp. leporinum | *foxtail barley | 1 | ||
| 776 | Poaceae | Hordeum vulgare var. trifurcatum | *cultivated barley | 2 | 1 | |
| 777 | Poaceae | Imperata brevifolia | satintail | 2 | 1 | 1 |
| 778 | Poaceae | Koeleria macrantha | June grass | 2 | 1 | |
| 779 | Poaceae | Lamarckia aurea | *goldentop | 1 | 6 | 1 |
| 780 | Poaceae | Leymus triticoides | creeping wild rye | 1 | 1 | |
| 781 | Poaceae | Lolium temulentum | *darnel | 1 | 1 | |
| 782 | Poaceae | Melica frutescens | tall melica | 4 | 2 | 1 |
| 783 | Poaceae | Melica imperfecta | coast-range melic | 3 | 12 | 1 |
| 784 | Poaceae | Muhlenbergia asperifolia | scratchgrass | 3 | 1 | |
| 785 | Poaceae | Muhlenbergia californica | California muhly | 3 | 1 | |
| 786 | Poaceae | Muhlenbergia microsperma | littleseed muhly | 2 | 1 | |
| 787 | Poaceae | Muhlenbergia rigens | deergrass | 1 | 1 | |
| 788 | Poaceae | Nassella cernua | nodding needlegrass | 5 | 1 | |
| 789 | Poaceae | Nassella lepida | foothill needlegrass | 1 | 1 | |
| 790 | Poaceae | Nassella pulchra | purple needlegrass | 1 | 1 | |
| 791 | Poaceae | Panicum capillare | witchgrass | 3 | 2 | |
| 792 | Poaceae | Panicum urvilleanum | desert panicgrass | 6 | 2 | 1 |
| 793 | Poaceae | Paspalum urvillei | *Vasey's grass | 1 | 1 | |
| 794 | Poaceae | Pennisetum setaceum | *fountain grass | 2 | 1 | |
| 795 | Poaceae | Piptatherum miliaceum | *smilo grass | 2 | 1 | |
| 796 | Poaceae | Pleuraphis rigida | big galleta | 7 | 1 | |
| 797 | Poaceae | Poa annua | *annual blue grass | 1 | 1 | |
| 798 | Poaceae | Poa howellii | Howell's blue grass | 1 | 1 | |
| 799 | Poaceae | Poa pratensis | *Kentucky blue grass | 2 | 1 | |
| 800 | Poaceae | Poa secunda | one-sided blue grass | 6 | 3 | |
| 801 | Poaceae | Poa secunda ssp. juncifolia | rush blue grass | 1 | 1 | |
| 802 | Poaceae | Poa secunda ssp. secunda | one-sided bluegrass | 1 | 1 | 1 |
| 803 | Poaceae | Polypogon australis | *Chilean beard grass | 1 | 1 | |
| 804 | Poaceae | Polypogon interruptus | *ditch beard grass | 1 | 1 | 1 |
| 805 | Poaceae | Polypogon monspeliensis | *rabbits-foot grass | 2 | 2 | 1 |
| 806 | Poaceae | Schismus arabicus | *Mediterranean grass | 1 | ||
| 807 | Poaceae | Schismus barbatus | *Mediterranean schismus | 9 | 7 | 1 |
| 808 | Poaceae | Setaria viridis | *green foxtail | 1 | 1 | |
| 809 | Poaceae | Sorghum halepense | *johnsongrass | 1 | 2 | 1 |
| 810 | Poaceae | Vulpia microstachys var. pauciflora | Pacific fescue | 5 | 1 | |
| 811 | Poaceae | Vulpia myuros | *rattail fescue | 1 | 5 | |
| 812 | Poaceae | Vulpia octoflora | six-weeks fescue | 6 | 1 | |
| 813 | Poaceae | Vulpia octoflora var. hirtella | hairy six-weeks fescue | 1 | ||
| 814 | Zannichelliaceae | Zannichellia palustris | horned pondweed | 4 | 1 | |
Voucher data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).