Flora of the Greater Santa Rosa Plateau Region

The Flora


This page gives the most recent list of 667 taxa found in the Santa Rosa Plateau Region, as of 9 June 2005.

As defined by Lathrop and Thorne (1985), the Greater Santa Rosa Plateau Region encompasses 18,218 hectares (45,017 acres), about 5.4 times larger than the ~3,360 ha (~8,300 acres) preserved by the Santa Rosa Plateau Ecological Reserve. Lathrop and Thorne state that the border lines of the plateau are: north, Los Alamos and Slaughterhouse Canyons; east, Miller Canyon and Guava St.; south, Cottonwood and De Luz Canyons; and east, San Mateo and Tenaja canyons. (map to be added later.)

Because only the taxa within the Santa Rosa Plateau Ecological Reserve are protected from annihilation through "development", it is of interest to note which taxa have been found on the Reserve. Also, since most people would like to know what taxa are found on the trails of the Reserve, I note those taxa separately below. (See also a list of just those taxa.) Lathrop and Thorne did not report locations precisely enough for 15 taxa to determine whether they are within the boundaries of the Preserve. These taxa are marked as such in the table below.

Numerology of the Taxa and Updating of Botanical Names

Lathrop and Thorne (1985) reported 582 taxa as actually being present for the larger region, and had previously reported another taxon which was omitted from their 1985 list. They also included an additional 12 taxa in their list as expected to occur here, but not actually found. Those taxa were included in the summary of their flora. These taxa are only listed here if they were subsequently found to be present. So far, only 4 of their 12 such taxa have been found.

Their total 583 taxa actually present becomes 579 taxa after updating the names to those used in the Jepson Manual. These 579 taxa make up 87% of the list given here. See the numerology of these taxa and the changes made to update the names.

There were a handful of taxa that were misidentified by Lathrop and Thorne. A separate webpage will give a list of those changes.

An additional 88 taxa have been found since 1985 by a number of other people, for a total of 667 taxa presented here. A separate webpage will give those taxa, along with their voucher status. A voucher at the Rancho Santa Ana Botanic Garden Herbarium or University of California Riverside Herbarium will document every taxon listed here.

In addition to these new taxa, there have been distinct changes in the flora of the Plateau since 1985 in the abundance and distribution of taxa reported by Lathrop and Thorne. A separate webpage will discuss these changes.

There is often uncertainty in the process of updating older names, such as those used by Lathrop and Thorne, to new names, in this case those of the Jepson Manual. These taxa which have uncertain Jepson Manual names, usually involving only the subspecies or variety name, are indicated in the table. The subspecies or variety name can be uncertain either because the subspecies or variety names were defined after Lathrop and Thorne made their determination, or because Lathrop and Thorne declined to state one. Also, at least one of the additional taxa has not yet been definitively identified, due to the drought in 2002, and is also marked. Most of these taxa should be definitively identified during the next year.

The name-updating process itself is very prone to human error as well. To quantify just how difficult a job it was in this case, a separate webpage will compare attempts by three other knowledgeable botanists who have done that conversion separately. The number of errors made in that conversion by each person ranged from three to six, with an additional eight to nine missing taxa in each rendition, with my original attempt being no exception. Fortunately, since a cross-comparison to these other efforts helped find the errors I made, the list below should be free from such errors. If any reader discovers an error that all four of us made, please let me know.

See also Plant Trail Guides for the Santa Rosa Plateau Ecological Reserve.

The Flora

This flora reports only the taxa found outside the planted areas at the Visitor Center and at the Adobes. A separate webpage will report the taxa planted in those locations.

An asterisk before the common name indicates a taxon not-native to California.

The columns On ER Trails and In ER indicate, respectively, whether a taxon is present on or near trails inside the Ecological Reserve, and whether a taxon has been document within any part of the Reserve. At present, 420 taxa are marked as being on or near the trails of Reserve; 608 taxa are marked as being inside any part of the Reserve, including the 15 taxa which may or may not be within the Reserve; and the remaining 59 taxa are found only outside the Reserve.

A quick reference to the source of a given taxon is given in the column Source below. Most people should simply ignore this column, and now go directly to the Flora.

The source is coded as follows: the rightmost digit gives the original source for that taxon. If the source was Lathrop and Thorne, the digit also denotes whether the taxon was inside the Reserve ("1"), or definitely ("2") or perhaps ("3") found outside the Reserve. The next digit to the left reports whether the name was converted to a Jepson Manual name ("8") or modified or verified by myself ("6").

The code for different observers is:

1Lathrop and Thorne (1985), taxon probably found within the Reserve
2Lathrop and Thorne (1985), taxon definitely found outside the Reserve
3Lathrop and Thorne (1985), taxon perhaps found outside the Reserve
4Bob Muns
6Tom Chester
7Zach Principe (Reserve Biologist)
8Taxon name updated to Jepson Manual name
9Taxon reported in Lathrop and Thorne (1985) as one expected to occur here, but not actually found. Such taxa are listed here only if they have subsequently been found to be present. So far, only 4 of their 12 such taxa have been found.
10Lathrop and Thorne voucher subsequently reclassified by Steve Boyd as a new taxa.
11Kay Madore
12A single taxon, Cotula coronopifolia, given in Lathrop and Thorne (1983), missing from Lathrop and Thorne (1985).
88Taxon name updated to Jepson Manual name, but the Jepson Manual name is ambiguous, since some subspecies have gone to one species and some have gone to another, and no subspecies was given by Lathrop and Thorne.

Here are two examples of how to decode the most complicated cases:

This Source column is not intended to give unambiguous information about what the updates are. That information is given in a separate webpage, and this column is only intended to mark the existence of that information.

The Flora

Version for printing, without the table lines and other text on this page.

# Latin Name (*)Common Name On ER

Ferns and Fern Allies

AspleniaceaeSpleenwort Family
1Asplenium vespertinumwestern spleenwort X1
AzollaceaeMosquito Fern Family
2Azolla filiculoidesmosquito fern X1
BlechnaceaeFern Family
3Woodwardia fimbriatagiant chain fernXX62
DennstaedtiaceaeBracken Family
4Pteridium aquilinum var. pubescensbracken ?3
DryopteridaceaeWoodfern Family
5Dryopteris argutaCalifornia wood fernXX1
EquisetaceaeHorsetail Family
6Equisetum arvensefield horsetail  2
7Equisetum laevigatumsmooth scouring rush X1
8Equisetum telmateia ssp. brauniigiant horsetail X1
IsoetaceaeQuillwort Family
9Isoetes howelliiHowell's quillwort X1
10Isoetes orcuttiiOrcutt's quillwortXX1
MarsileaceaeMarsilea Family
11Marsilea vestita ssp. vestitaclover fernXX1
12Pilularia americanapillwort X1
PolypodiaceaePolypody Family
13Polypodium californicumCalifornia polypodyXX1
PteridaceaeFern Family
14Adiantum jordaniiCalifornia maidenhair fernXX1
15Aspidotis californicaCalifornia lace fernXX1
16Cheilanthes newberryicottony fern X81
17Pellaea andromedifoliacoffee fernXX1
18Pellaea mucronata var. mucronatabird's-foot fernXX1
19Pentagramma triangularis ssp. triangularisgoldback fernXX81
SelaginellaceaeSpike Moss Family
20Selaginella bigeloviiBigelow's spike-mossXX1


AmaranthaceaeAmaranth Family
21Amaranthus albus*tumble pigweed X1
22Amaranthus blitoidesmat amaranth  2
23Amaranthus californicusCalifornia amaranth X1
24Amaranthus retroflexus*red-rooted amaranth  2
AnacardiaceaeSumac Family
25Malosma laurinalaurel sumacXX1
26Rhus ovatasugar bushXX1
27Rhus trilobatabasketbushXX1
28Schinus molle*Peruvian pepper tree X1
29Toxicodendron diversilobumpoison oakXX81
ApiaceaeCarrot Family
30Apiastrum angustifoliumwild celeryXX1
31Apium graveolens*celery  2
32Bowlesia incanahoary bowlesiaXX1
33Daucus pusillusrattlesnake weedXX1
34Eryngium aristulatum var. parishiiSan Diego button-celeryXX81
35Foeniculum vulgare*fennelXX1
36Hydrocotyle ranunculoidesfloating marsh-pennywort X1
37Lomatium dasycarpum ssp. dasycarpumwoolly-fruited lomatiumXX1
38Lomatium lucidumshiny lomatiumXX1
39Lomatium utriculatumcommon lomatiumXX1
40Osmorhiza brachypodaCalifornia sweet-cicelyXX6
41Sanicula argutasharp-toothed sanicleXX1
42Sanicula bipinnatapoison sanicleXX11613
43Sanicula bipinnatifidapurple sanicleXX1
44Sanicula crassicaulisPacific sanicleXX1
45Sanicula tuberosatuberous sanicle X4
46Torilis nodosa*hedge parsleyXX1
ApocynaceaeDogbane Family
47Apocynum cannabinumIndian hemp X1
48Vinca major*greater periwinkle X1
AsclepiadaceaeMilkweed Family
49Asclepias eriocarpaIndian milkweedXX1
50Asclepias fascicularisnarrow-leaf milkweedXX1
AsteraceaeSunflower Family
51Achillea millefoliumyarrow X1
52Acourtia microcephalaacourtiaXX1
53Agoseris grandifloragrand mountain dandelionXX1
54Ambrosia acanthicarpabur-ragweed X6
55Ambrosia psilostachyawestern ragweedXX1
56Anthemis cotula*dog-fennelXX2
57Artemisia californicaCalifornia sagebrushXX1
58Artemisia douglasianamugwortXX1
59Artemisia dracunculuswild tarragonXX6
60Aster lanceolatus ssp. hesperiusSiskiyou asterXX6
61Aster subulatus var. ligulatusannual water-asterXX76
62Baccharis emoryiEmory's baccharisXX1
63Baccharis pilulariscoyote bushXX2
64Baccharis salicifoliamule fatXX81
65Baccharis sarothroidesbroom baccharisXX6
66Bebbia juncea var. asperasweetbushXX2
67Blennosperma nanum var. nanumyellow carpetXX81
68Brickellia californicaCalifornia brickellbushXX1
69Carduus pycnocephalus*Italian thistleXX6
70Centaurea melitensis*tocaloteXX1
71Centaurea solstitialis*yellow star-thistle X76
72Chaenactis artemisiifoliameally white pincushionXX1
73Chaenactis glabriuscula var. glabriusculayellow pincushionXX61
74Chamomilla suaveolens*pineapple weedXX81
75Chrysanthemum coronarium*crown daisy  2
76Cirsium occidentale var. californicumCalifornia thistleXX81
77Cirsium occidentale var. occidentalecobwebby thistleXX81
78Cirsium scariosumelk thistleXX81
79Cirsium vulgare*bull thistleXX62
80Conyza bonariensis*little horseweedXX1
81Conyza canadensishorseweedXX1
82Conyza coulteriCoulter's horseweed X1
83Cotula australis*Australian brass-buttonsXX69
84Cotula coronopifolia*brass-buttonsXX1
85Cynara cardunculus*artichoke thistle X7
86Dimorphotheca sinuata*African daisyXX6
87Encelia farinosabrittlebush X1
88Ericameria palmeri var. pachylepisPalmer's goldenbushXX81
89Erigeron foliosus var. foliosusleafy daisyXX81
90Eriophyllum confertiflorum var. confertiflorumgolden yarrowXX81
91Filago californicaCalifornia filagoXX69
92Filago gallica*narrowleaf filagoXX1
93Gazania X (mounding hybrid)*gazaniaXX6
94Gnaphalium bicolorbicolored everlastingXX1
95Gnaphalium californicumCalifornia everlastingXX1
96Gnaphalium canescens ssp. beneolensfragrant everlastingXX6
97Gnaphalium canescens ssp. microcephalumwhite everlastingXX81
98Gnaphalium leucocephalumwhite-headed cudweed  2
99Gnaphalium luteo-album*common cudweedXX1
100Gnaphalium palustrewestern marsh cudweedXX1
101Gnaphalium purpureumpurple everlasting X1
102Gnaphalium stramineumcotton-batting plantXX81
103Gutierrezia californicaCalifornia matchweed X1
104Gutierrezia sarothraematchweedXX6
105Hazardia squarrosa var. grindelioidessaw-toothed goldenbushXX81
106Hedypnois cretica*Crete weedXX6
107Helianthus annuusannual sunflower X1
108Helianthus gracilentusslender sunflowerXX1
109Hemizonia fasciculataslender tarweedXX1
110Hemizonia paniculataSan Diego tarweedXX1
111Hesperevax acaulisdwarf evax X881
112Heterotheca grandifloratelegraph weedXX1
113Heterotheca sessiliflora ssp. echioidesbristly goldenasterXX6
114Holocarpha virgata ssp. elongatagraceful tarplantXX1
115Hypochaeris glabra*smooth cat's earXX1
116Isocoma menziesiicoastal goldenbushXX81
117Lactuca serriola*prickly lettuceXX1
118Lagophylla ramosissima ssp. ramosissimacommon hareleaf X81
119Lasthenia californicagoldfieldsXX81
120Lasthenia glaberrimasmooth goldfieldsXX12
121Layia platyglossacommon tidy-tipsXX1
122Lessingia filaginifolia var. filaginifoliaCalifornia-asterXX81
123Madia gracilisslender madiaXX1
124Malacothrix clevelandiiannual malacothrixXX1
125Micropus californicus var. californicusslender cottonweedXX61
126Microseris douglasii ssp. douglasiiDouglas' microserisXX66
127Microseris douglasii ssp. platycarphasmall-flowered microseris X1
128Osmadenia tenellathree spotXX81
129Pentachaeta aureagolden daisy  72
130Picris echioides*bristly ox-tongueXX3
131Porophyllum gracileodoraXX1
132Psilocarphus brevissimus var. brevissimuswoolly marblesXX81
133Psilocarphus tenellus var. tenellusslender woolly marblesXX81
134Rafinesquia californicaCalifornia chicoryXX1
135Senecio flaccidus var. douglasiibush senecio X81
136Senecio vulgaris*common groundselXX1
137Silybum marianum*milk thistleXX2
138Solidago californicagoldenrodXX1
139Sonchus asper ssp. asper*prickly sow thistleXX1
140Sonchus oleraceus*sow thistleXX1
141Stebbinsoseris heterocarpabrown microserisXX81
142Stephanomeria diegensisSan Diego wreathplantXX6
143Stephanomeria exigua ssp. deaneislender wreathplantXX6
144Stylocline gnaphaloideseverlasting nest-strawXX1
145Taraxacum officinale*common dandelion X1
146Tetradymia comosacotton-thorn X1
147Tragopogon dubius*yellow salsifyXX7
148Uropappus lindleyisilver puffsXX81
149Venegasia carpesioidescanyon sunflower  2
150Xanthium strumariumcockleburXX1
BerberidaceaeBarberry Family
151Berberis aquifolium var. dictyotaCalifornia barberry  27
BetulaceaeBirch Family
152Alnus rhombifoliawhite alder  2
BoraginaceaeBorage Family
153Amsinckia menziesii var. intermediacommon fiddleneckXX81
154Amsinckia menziesii var. menziesiismall-flowered fiddleneckXX81
155Cryptantha intermediapopcorn flowerXX1
156Cryptantha micromeresminute-flowered cryptanthaXX116
157Cryptantha microstachysTejon cryptanthaXX1
158Cryptantha muricataprickly cryptanthaXX1
159Echium plantagineum*salvation echium  2
160Heliotropium curassavicumseaside heliotropeXX1
161Pectocarya linearis ssp. feroculaslender combseedXX1
162Pectocarya penicillatacombseedXX6
163Plagiobothrys acanthocarpusadobe popcorn flower X1
164Plagiobothrys arizonicusArizona popcorn flower X1
165Plagiobothrys collinus var. fulvescensCalifornia popcorn flowerXX116
166Plagiobothrys fulvustawny popcorn flowerXX81
167Plagiobothrys nothofulvusrusty-haired popcorn flowerXX1
168Plagiobothrys tenellusslender popcorn flowerXX116
169Plagiobothrys undulatushooked popcorn flowerXX1
BrassicaceaeMustard Family
170Athysanus pusillusdwarf athysanusXX1
171Brassica nigra*black mustard X1
172Brassica rapa*field mustard X1
173Capsella bursa-pastoris*shepherd's purseXX1
174Cardamine californica var. californicamilk maidsXX61
175Hirschfeldia incana*shortpod mustardXX81
176Lepidium nitidum var. nitidumshining peppergrassXX681
177Lepidium virginicumwild pepper-grass X4
178Raphanus sativus*purple wild radish X1
179Rorippa nasturtium-aquaticumwater cressXX81
180Sinapis arvensis*charlockXX6
181Sisymbrium altissimum*tumble-mustard X1
182Sisymbrium officinale*hedge mustardXX1
183Thysanocarpus curvipesfringe-podXX1
184Tropidocarpum gracileslender tropidocarpum X1
CactaceaeCactus Family
185Opuntia littoraliscoast prickly-pear X1
186Opuntia vaseyiVasey's prickly-pearXX681
CallitrichaceaeWater-Starwort Family
187Callitriche heterophylla var. bolanderiBolander's water-starwortXX1
188Callitriche marginatawinged water-starwortXX81
CampanulaceaeBellflower Family
189Downingia bellaspotted downingiaXX1
190Downingia cuspidatatoothed downingia X1
191Lobelia cardinalis var. pseudosplendenscardinal flower X81
192Triodanis bifloraVenus looking-glassXX6
CapparaceaeCaper Family
193Isomeris arboreabladderpod  27
CaprifoliaceaeHoneysuckle Family
194Lonicera subspicata var. denudatasouthern honeysuckleXX81
195Sambucus mexicanablue elderberryXX1
196Symphoricarpos molliscreeping snowberry ?3
CaryophyllaceaePink Family
197Cerastium glomeratum*mouse-ear chickweedXX1
198Polycarpon tetraphyllum*four-leaf polycarp  2
199Sagina decumbens ssp. occidentaliswestern pearlwort  82
200Silene antirrhinasnapdragon campionXX1
201Silene gallica*windmill pinkXX1
202Silene laciniata ssp. majorsouthern Indian pinkXX1
203Spergula arvensis ssp. arvensis*starwort X6
204Spergularia bocconei*sand spurreyXX1
205Stellaria media*common chickweedXX1
ChenopodiaceaeGoosefoot Family
206Chenopodium album*white goosefoot X1
207Chenopodium ambrosioides*Mexican tea X1
208Chenopodium berlandieripit-seed goosefoot X1
209Chenopodium californicumCalifornia goosefoot X1
210Chenopodium murale*nettle-leaved goosefoot X1
211Chenopodium pumilio*clammy goosefoot  2
212Salsola tragus*Russian thistleXX81
CistaceaeRock-Rose Family
213Helianthemum scopariumrush-roseXX1
ConvolvulaceaeMorning Glory Family
214Calystegia macrostegia ssp. aridasouthern California morning-gloryXX1
215Calystegia macrostegia ssp. intermediasouth coast morning-gloryXX6
216Calystegia macrostegia ssp. tenuifoliaSan Diego morning-gloryXX6
217Convolvulus arvensis*field bindweed  2
218Convolvulus simulanssmall-flowered morning-glory X7
CrassulaceaeStonecrop Family
219Crassula aquaticaaquatic pygmy-weed X1
220Crassula connatapygmy-weedXX81
221Crassula solierilittle pygmy-weed X10
222Crassula tillaea*Mediterranean pygmy-weedXX6
223Dudleya edulisladies fingers X1
224Dudleya lanceolatalanceleaf dudleyaXX1
225Dudleya pulverulenta ssp. pulverulentaCalifornia chalk lettuceXX61
CucurbitaceaeGourd Family
226Cucurbita foetidissimastinking gourdXX1
227Marah macrocarpus var. macrocarpuswild-cucumberXX61
CuscutaceaeDodder Family
228Cuscuta californica var. californicaCalifornia dodderXX61
229Cuscuta subinclusacanyon dodder X1
DatiscaceaeDatisca Family
230Datisca glomerataDurango rootXX1
ElatinaceaeWaterwort Family
231Elatine brachyspermashort-seed waterwort X1
232Elatine californicaCalifornia waterwort X1
233Elatine chilensisChilean waterwort X1
EricaceaeHeath Family
234Arctostaphylos glandulosa ssp. zacaensisEastwood manzanitaXX681
235Arctostaphylos glaucabigberry manzanita ?3
236Arctostaphylos rainbowensisRainbow manzanitaXX81
237Rhododendron occidentalewestern azalea  2
238Xylococcus bicolormission manzanitaXX1
EuphorbiaceaeSpurge Family
239Chamaesyce albomarginatarattlesnake weedXX1
240Chamaesyce maculata*spotted spurge  82
241Chamaesyce polycarpasmall-seeded spurgeXX1
242Chamaesyce serpyllifoliathyme-leafed spurge X1
243Eremocarpus setigerusdove weedXX1
244Euphorbia spathulatawarty spurgeXX1
245Ricinus communis*castor bean  2
FabaceaePea Family
246Amorpha californica var. californicaCalifornia false-indigo X81
247Amorpha fruticosawestern false-indigoXX116
248Astragalus gambelianusGambel's dwarf milk-vetchXX4
249Astragalus pomonensisPomona locoweedXX1
250Hoita macrostachyaleather root X81
251Lathyrus vestitus var. alefeldiiSan Diego peaXX81
252Lotus hamatusSan Diego birdsfoot lotusXX1
253Lotus heermanniisilky lotus X1
254Lotus purshianus var. purshianusSpanish cloverXX1
255Lotus scoparius var. brevialatusshort-winged deerweedXX1
256Lotus scoparius var. scopariusdeerweedXX1
257Lotus strigosusstrigose lotusXX1
258Lotus wrangelianusCalifornia lotusXX81
259Lupinus bicolordwarf lupineXX1
260Lupinus concinnusbajada lupineXX1
261Lupinus excubitus var. halliibush lupineXX1
262Lupinus hirsutissimusstinging lupineXX1
263Lupinus microcarpus var. microcarpuschick lupineXX81
264Lupinus sparsiflorus ssp. sparsiflorusCoulter's lupine X1
265Lupinus succulentusarroyo lupine  2
266Lupinus truncatuscollar lupineXX1
267Medicago polymorpha*California burcloverXX1
268Medicago sativa*alfalfa X1
269Melilotus albus*white sweetcloverXX1
270Melilotus indicus*sourcloverXX1
271Spartium junceum*Spanish broom  2
272Trifolium albopurpureum var. albopurpureumIndian cloverXX81
273Trifolium ciliolatumtree cloverXX1
274Trifolium depauperatum var. truncatumballoon cloverXX81
275Trifolium gracilentum var. gracilentumpin-point cloverXX81
276Trifolium hirtum*rose cloverXX13
277Trifolium microcephalumsmall-head field cloverXX1
278Trifolium variegatumvariegated cloverXX1
279Trifolium willdenoviitomcat cloverXX81
280Trifolium wormskioldiicows clover X1
281Vicia americana var. americanaAmerican vetchXX1
282Vicia hasseislender vetchXX6881
283Vicia ludoviciana var. ludovicianaslim vetchXX6881
284Vicia sativa ssp. sativa*spring vetchXX11
285Vicia villosa ssp. varia*winter vetchXX6
286Vicia villosa ssp. villosa*hairy vetch  82
FagaceaeOak Family
287Quercus acutidensTorrey's scrub oakXX81
288Quercus acutidens X Q. engelmanniiscrub oak X Engelmann oak X81
289Quercus agrifolia var. agrifoliacoast live oakXX1
290Quercus agrifolia var. agrifolia X Quercus wislizeni var. frutescenshybrid oakXX116
291Quercus engelmanniiEngelmann oakXX1
292Quercus wislizeni var. frutescensinterior live oak X1
GarryaceaeSilk-Tassel Family
293Garrya veatchiicanyon silktassel X1
GentianaceaeGentian Family
294Centaurium venustumcanchalaguaXX1
295Swertia parryiParry's green-gentian X81
GeraniaceaeGeranium Family
296Erodium botrys*long-beaked filareeXX6
297Erodium brachycarpum*short-fruited filareeXX1
298Erodium cicutarium*redstem filareeXX1
299Erodium macrophyllumlarge-leaved filaree X7
300Erodium moschatum*white-stemmed filareeXX1
301Geranium dissectum*cut-leaved geraniumXX1
GrossulariaceaeGooseberry Family
302Ribes indecorumwhite-flowering currantXX1
303Ribes malvaceum var. viridifoliumchaparral currantXX7
HydrophyllaceaePhacelia Family
304Emmenanthe penduliflora var. penduliflorawhispering bellsXX81
305Eriodictyon crassifolium var. crassifoliumthick-leaved yerba santaXX61
306Eucrypta chrysanthemifolia var. chrysanthemifoliaeucryptaXX1
307Nemophila menziesii var. integrifoliababy blue eyesXX1
308Nemophila menziesii var. menziesiibaby blue eyesXX1
309Phacelia cicutaria var. hispidacaterpillar phaceliaXX1
310Phacelia distanscommon phacelia X1
311Phacelia grandifloragiant-flowered phacelia X1
312Phacelia imbricata ssp. patulaimbricate phacelia X1
313Phacelia minorwild canterbury bellsXX1
314Phacelia ramosissima var. latifoliabranching phaceliaXX81
315Pholistoma auritum var. auritumfiesta flowerXX61
HypericaceaeSt. John's Wort Family
316Hypericum anagalloidestinker's penny  2
317Hypericum formosum var. scouleriScouler's St. Johnswort X1
318Hypericum perforatum*Klamath weed X1
JuglandaceaeWalnut Family
319Carya illinoensis*pecan X7
320Juglans californica var. californicaSouthern California black walnut  82
321Juglans regia*English walnut X1
LamiaceaeMint Family
322Lamium amplexicaule*henbitXX4
323Marrubium vulgare*horehoundXX1
324Mentha spicata var. spicata*spearmintXX1
325Monardella hypoleuca ssp. hypoleucawhite-leaf monardellaXX6
326Monardella lanceolatamustang mintXX1
327Salvia apianawhite sageXX1
328Salvia apiana X S. melliferagray sageXX6
329Salvia clevelandiiCleveland sage  2
330Salvia columbariaechiaXX1
331Salvia melliferablack sageXX1
332Satureja chandleriSan Miguel savory  2
333Scutellaria bolanderi ssp. austromontanasouthern skullcapXX613
334Scutellaria tuberosacommon skullcapXX112
335Stachys ajugoides var. rigidarigid hedge-nettleXX81
336Trichostema lanceolatumvinegar weedXX1
LauraceaeLaurel Family
337Umbellularia californicaCalifornia bay  2
LimnanthaceaeMeadowfoam Family
338Limnanthes gracilis ssp. parishiiParish's meadowfoam X1
LinaceaeFlax Family
339Hesperolinon micranthumsmall-flower western flaxXX1
LoasaceaeStick-Leaf Family
340Mentzelia montanamountain blazing star X1
LythraceaeLoosestrife Family
341Lythrum californicumCalifornia loosestrife  2
342Lythrum hyssopifolia*grass polyXX1
MalvaceaeMallow Family
343Malacothamnus fasciculatuschaparral bush mallowXX1
344Malva parviflora*cheeseweedXX79
345Malvella leprosaalkali mallowXX1
346Sidalcea malviflora ssp. sparsifoliacheckerbloomXX1
MolluginaceaeCarpet-Weed Family
347Glinus lotoides*lotus sweetjuice X210
MoraceaeMulberry Family
348Ficus carica*common fig X7
NyctaginaceaeFour-O'Clock Family
349Mirabilis californicaCalifornia four o'clockXX1
OleaceaeOlive Family
350Fraxinus dipetalatwo-petaled ash X1
351Fraxinus velutinavelvet ash ?3
352Olea europaea*oliveXX2
OnagraceaeEvening Primrose Family
353Camissonia bistortasouthern suncupXX1
354Camissonia californicaCalifornia suncupXX1
355Camissonia hirtellafield sun-cupXX1
356Camissonia ignotaJurupa Hills sun-cupsXX1
357Camissonia intermediaintermediate sun-cupsXX116
358Camissonia micranthasmall-flowered evening-primrose X1
359Camissonia strigulosastrigose sun-cupXX116
360Clarkia dudleyanaDudley's clarkia X1
361Clarkia epilobioidescanyon clarkiaXX1
362Clarkia purpurea ssp. quadrivulnerapurple clarkiaXX1
363Epilobium canum ssp. canumCalifornia fuchsiaXX81
364Epilobium ciliatum ssp. ciliatumwillowherbXX1
365Epilobium densiflorumspike primroseXX81
366Ludwigia peploidesfloating water-primrose X1
367Oenothera californica ssp. californicaCalifornia evening-primrose X81
368Oenothera elata ssp. hirsutissimaHooker's evening-primroseXX1
OrobanchaceaeBroom-Rape Family
369Orobanche parishii ssp. parishiiParish's broom-rape X7
OxalidaceaeOxalis Family
370Oxalis albicans ssp. californicaCalifornia oxalisXX1
371Oxalis corniculata*creeping woodsorrelXX1169
PaeoniaceaePeony Family
372Paeonia californicaCalifornia peonyXX1
PapaveraceaePoppy Family
373Dicentra chrysanthagolden ear drops X1
374Eschscholzia californicaCalifornia poppyXX1
375Meconella denticulatasmall-flowered meconella  2
376Platystemon californicuscream cups X1
PlantaginaceaePlantain Family
377Plantago elongatalong-leaf plantainXX81
378Plantago erectaCalifornia plantainXX1
379Plantago lanceolata*English plantainXX2
380Plantago major*common plantainXX1
PlatanaceaeSycamore Family
381Platanus racemosawestern sycamoreXX1
PolemoniaceaePhlox Family
382Allophyllum glutinosumsticky false-gilia X1
383Eriastrum sapphirinumsapphire woolly-starXX1
384Gilia angelensisangel's giliaXX1
385Gilia capitata ssp. abrotanifoliaglobe gilia X1
386Leptodactylon californicum ssp. glandulosumprickly phlox X1
387Linanthus dianthiflorusground pinkXX1
388Linanthus floribundus ssp. floribundussummer snow X1
389Linanthus liniflorusflax-flowered linanthusXX1
390Linanthus parvifloruscommon linanthusXX81
391Linanthus pygmaeus ssp. continentalispygmy linanthusXX1
392Navarretia atractyloidesholly-leaf navarretiaXX1
393Navarretia hamata ssp. hamatahooked skunkweedXX1
394Navarretia intertextaneedleleaf navarretia X1
395Navarretia prostrataprostrate navarretiaXX1
396Phlox gracilisannual phlox X81
PolygalaceaeMilkwort Family
397Polygala cornuta var. fishiaeFish's milkwort X1
PolygonaceaeBuckwheat Family
398Chorizanthe fimbriata var. fimbriatafringed spineflowerXX61
399Chorizanthe polygonoides var. longispinalong-spined spineflower X1
400Chorizanthe procumbensprostrate spineflowerXX1
401Chorizanthe staticoidesTurkish rugging X1
402Eriogonum davidsoniiDavidson's buckwheatXX69
403Eriogonum elongatum var. elongatumlong-stemmed buckwheatXX1
404Eriogonum fasciculatum var. foliolosumCalifornia buckwheatXX1
405Eriogonum gracile var. gracileslender buckwheatXX61
406Eriogonum nudum var. pauciflorumnaked buckwheat X81
407Eriogonum thurberiThurber's buckwheat  2
408Lastarriaea coriacealeather spineflower  2
409Polygonum arenastrum*knotweedXX81
410Polygonum argyrocoleon*silver-sheath knotweed  2
411Polygonum lapathifoliumwillow weed  2
412Polygonum punctatumpunctate smartweed  2
413Pterostegia drymarioidesthreadstemXX1
414Rumex acetosella*common sheep sorrel  2
415Rumex conglomeratus*whorled dockXX1
416Rumex crispus*curly dockXX1
417Rumex salicifoliuswillow-leaved dockXX1
PortulacaceaePurslane Family
418Calandrinia ciliatared maidsXX1
419Calyptridium monandrumsand cress ?3
420Claytonia parviflora ssp. parvifloranarrow-leaved miner's lettuceXX6
421Claytonia perfoliata ssp. mexicanasouthern miner's lettuceXX6
422Claytonia perfoliata ssp. perfoliataminer's lettuceXX681
423Montia fontana ssp. amporitanawater chickweed X1
424Portulaca oleracea*common purslane  2
PrimulaceaePrimrose Family
425Anagallis arvensis*scarlet pimpernelXX1
426Centunculus minimuschaffweed X81
427Dodecatheon clevelandii ssp. clevelandiishooting starXX1
428Samolus parvifloruswater-pimpernel X1
RanunculaceaeButtercup Family
429Clematis paucifloravirgin's bowerXX1
430Delphinium cardinalescarlet larkspur X1
431Delphinium parryi ssp. parryiblue larkspurXX61
432Myosurus minimus ssp. apuslittle mousetail X1
433Ranunculus aquatilis var. capillaceuswater crowfootXX1
434Ranunculus hebecarpusdelicate buttercup X4
435Ranunculus occidentaliswestern buttercupXX61
436Thalictrum fendleri var. polycarpummeadow-rueXX81
RhamnaceaeBuckthorn Family
437Ceanothus crassifoliushoaryleaf ceanothusXX1
438Ceanothus leucodermischaparral whitethorn X1
439Ceanothus tomentosus var. olivaceusRamona lilacXX1
440Rhamnus californica ssp. californicaCalifornia coffeeberryXX1
441Rhamnus crocearedberryXX1
442Rhamnus ilicifoliahollyleaf redberryXX1
RosaceaeRose Family
443Adenostoma fasciculatumchamiseXX1
444Aphanes occidentaliswestern lady's mantleXX4
445Cercocarpus betuloides var. betuloidesbirch-leaf mountain-mahogany X1
446Cercocarpus minutiflorusSan Diego mountain mahoganyXX1
447Heteromeles arbutifoliatoyonXX1
448Potentilla glandulosa ssp. glandulosasticky cinquefoilXX1
449Prunus emarginatabitter cherry X1
450Prunus ilicifolia ssp. ilicifoliahollyleaf cherryXX1
451Rosa californicaCalifornia wild rose X1
452Rubus discolor*Himalaya blackberryXX81
453Rubus ursinusCalifornia blackberry ?3
RubiaceaeBedstraw Family
454Galium angustifolium ssp. angustifoliumnarrowleaf bedstrawXX1
455Galium aparinecommon bedstrawXX1
456Galium murale*tiny bedstraw X 
457Galium nuttallii ssp. nuttalliiclimbing bedstrawXX1
458Galium parisiense*wall bedstrawXX7
SalicaceaeWillow Family
459Populus balsamifera ssp. trichocarpablack cottonwood X81
460Populus fremontii ssp. fremontiiFremont cottonwood X1
461Salix exiguanarrowleaf willow  82
462Salix gooddingiiblack willowXX1162
463Salix laevigatared willowXX1
464Salix lasiolepisarroyo willowXX1
465Salix lucida ssp. lasiandrashining willowXX682
SaururaceaeLizard-Tail Family
466Anemopsis californicayerba mansaXX1
SaxifragaceaeSaxifrage Family
467Jepsonia parryicoast jepsoniaXX1
468Lithophragma affinewoodland starXX1
469Saxifraga californicaCalifornia saxifrage  2
ScrophulariaceaeSnapdragon Family
470Antirrhinum coulterianumCoulter's snapdragonXX1
471Antirrhinum kelloggiitwining snapdragonXX1
472Antirrhinum nuttallianumpurple snapdragonXX1
473Antirrhinum nuttallianum ssp. nuttallianumpurple snapdragonXX61
474Castilleja affinis ssp. affiniscoast Indian paintbrush X1
475Castilleja densifloraowl's-cloverXX81
476Castilleja exserta ssp. exsertapurple owl's cloverXX81
477Castilleja foliolosawoolly Indian paintbrush X1
478Castilleja minor ssp. spiralislesser paintbrush ?83
479Collinsia concolorsouthern Chinese houses  2
480Collinsia heterophyllaChinese housesXX1
481Collinsia parryiParry's collinsia X1
482Cordylanthus rigidus ssp. setigerusbristly bird's beakXX81
483Keckiella antirrhinoides var. antirrhinoideschaparral beard-tongueXX1
484Keckiella cordifoliaheartleaf penstemonXX1
485Linaria canadensis var. texanarough-seeded blue toad-flaxXX1
486Mimulus aurantiacusbush monkeyflowerXX81
487Mimulus brevipeswide-throated yellow monkeyflowerXX1
488Mimulus cardinalisscarlet monkeyflower X1
489Mimulus floribundusfloriferous monkeyflowerXX1
490Mimulus guttatuscommon monkeyflowerXX1
491Mimulus palmeriPalomar monkeyflower X81
492Mimulus pilosusfalse monkeyflowerXX1
493Pedicularis densifloraIndian warrior ?3
494Penstemon heterophyllus var. australissouthern foothill penstemonXX1
495Penstemon spectabilis var. spectabilisshowy penstemonXX81
496Scrophularia californica ssp. floribundaCalifornia bee plantXX1
497Veronica americanaAmerican speedwell  2
498Veronica anagallis-aquatica*water speedwell  2
499Veronica peregrina ssp. xalapensispurslane speedwellXX1
SolanaceaeNightshade Family
500Datura wrightiisacred datura X1
501Nicotiana glauca*tree tobacco X1
502Nicotiana quadrivalvisIndian tobacco X81
503Solanum americanumsmall-flowered nightshade  2
504Solanum douglasiiwhite nightshade X1
505Solanum parishiiParish's purple nightshadeXX61
UrticaceaeNettle Family
506Parietaria hespera var. hesperapellitoryXX1
507Urtica dioica ssp. holosericeastinging nettle X1
ValerianaceaeValerian Family
508Plectritis ciliosa ssp. insignisshowy plectritisXX1
VerbenaceaeVervain Family
509Verbena lasiostachys var. lasiostachyswestern vervainXX81
ViolaceaeViolet Family
510Viola pedunculatajohnny jump-upXX1
ViscaceaeMistletoe Family
511Phoradendron macrophyllumbig leaf mistletoeXX81
512Phoradendron villosumoak mistletoe X1
VitaceaeGrape Family
513Parthenocissus vitaceaVirginia creeper  82
514Vitis girdianawild grape X1
ZygophyllaceaeEel-Grass Family
515Tribulus terrestris*puncture-vine X1


CupressaceaeCypress Family
516Juniperus californicaCalifornia juniper  2


CyperaceaeSedge Family
517Carex almasturdy sedgeXX1
518Carex barbaraevalley sedge  2
519Carex densadense sedge  2
520Carex praegracilisclustered field sedgeXX1
521Carex schottiiSchott's sedge X1
522Carex sentaswamp sedge ?3
523Carex spissaSan Diego sedgeXX116
524Carex triquetratriangular-fruit sedgeXX1
525Cyperus eragrostisumbrella sedgeXX2
526Cyperus esculentuschufa flatsedge  2
527Cyperus involucratus*umbrella plant  82
528Eleocharis acicularis var. acicularisneedle spikerush X81
529Eleocharis macrostachyacommon spikerushXX1
530Eleocharis parishiiParish's spikerush X81
531Eleocharis radicanscreeping spikerush X1
532Scirpus acutus var. occidentaliscommon tule X1
533Scirpus californicusCalifornia tule X1
534Scirpus microcarpusmountain bog bulrush X1
HydrocharitaceaeWaterweed Family
535Najas marinamarine water nymph  2
IridaceaeIris Family
536Sisyrinchium bellumblue-eyed grassXX1
JuncaceaeRush Family
537Juncus balticuswire rushXX1
538Juncus bufonius var. bufoniustoad rushXX61
539Juncus bufonius var. occidentaliswestern toad rushXX81
540Juncus effusus var. pacificusPacific rush X1
541Juncus macrophylluslong-leaved rush X1
542Juncus mexicanusMexican rushXX1
543Juncus oxymerispointed rush X1
544Juncus phaeocephalus var. paniculatusspreading brown-headed rush X10
545Juncus rugulosuswrinkled rushXX1
546Juncus textilisbasket rush X1
547Juncus tiehmiiTiehm's rush X1
548Juncus xiphioidesiris-leaved rush X1
JuncaginaceaeArrow-Grass Family
549Lilaea scilloidesflowering quillwort X1
LemnaceaeDuckweed Family
550Lemna gibbaswollen duckweed X1
551Lemna minorcommon duckweed X1
552Lemna minutaduckweed X1
LiliaceaeLily Family
553Allium haematochitonred-skinned onionXX1
554Allium lacunosum var. lacunosumpitted onion X1
555Allium peninsulare var. peninsulareMexicali onion X81
556Bloomeria croceagoldenstarXX1
557Brodiaea filifoliathread-leaved brodiaeaXX1
558Brodiaea orcuttiiOrcutt's brodiaea X1
559Brodiaea terrestris ssp. kernensisearth brodiaeaXX1
560Calochortus albuswhite fairy lanternXX1
561Calochortus splendenssplendid mariposa lilyXX1
562Calochortus weedii var. weediiyellow mariposa lilyXX61
563Chlorogalum parviflorumsmall-flowered soap plant X1
564Chlorogalum pomeridianum var. pomeridianumsoap plantXX81
565Dichelostemma capitatum ssp. capitatumblue dicksXX81
566Fritillaria biflora var. biflorachocolate lilyXX61
567Lilium humboldtii ssp. ocellatumocellated Humboldt lily ?3
568Muilla maritimamuillaXX1
569Yucca whippleichaparral yuccaXX1
570Zigadenus fremontiiwhite star-lily X1
OrchidaceaeOrchid Family
571Piperia unalascensisAlaska rein orchid X81
PoaceaeGrass Family
572Achnatherum coronatumgiant needlegrassXX81
573Aegilops cylindrica*jointed goatgrassXX7
574Agrostis pallensseashore bentgrassXX81
575Agrostis stolonifera*creeping bentgrassXX6
576Agrostis viridis*green bentgrass X81
577Aira caryophyllea*silver hairgrass  2
578Alopecurus saccatusfoxtail X81
579Aristida ternipes var. hamulosahook three-awnXX7
580Avena barbata*slender wild oatsXX1
581Avena fatua*wild oatsXX1
582Avena sativa*common oats X4
583Bothriochloa barbinodiscane bluestem ?3
584Brachypodium distachyon*purple false-bromeXX7
585Bromus arenarius*Australian bromeXX1
586Bromus carinatus var. carinatusCalifornia bromeXX61
587Bromus catharticus*rescue grass X10
588Bromus diandrus*ripgut bromeXX1
589Bromus grandistall brome X1
590Bromus hordeaceus*soft chessXX81
591Bromus laevipeswoodland brome X81
592Bromus madritensis ssp. rubens*red bromeXX81
593Bromus tectorum*downy brome X1
594Chloris verticillata*tumble finger grass X7
595Cortaderia jubata*pampas grass  82
596Cynodon dactylon*Bermuda grassXX1
597Dactylis glomerata*orchard-grass X7
598Deschampsia danthonioidesannual hairgrassXX1
599Digitaria sanguinalis*crabgrass  2
600Distichlis spicatasaltgrassXX1
601Echinochloa colona*jungle rice  2
602Echinochloa crus-galli*barnyard grass X1
603Elymus elymoidessquirreltail X81
604Elymus glaucus ssp. glaucusblue wildryeXX1
605Elymus glaucus ssp. jepsoniiJepson's blue wildryeXX6
606Elymus multisetusbig squirreltailXX81
607Elymus X macouniiMacoun's ryegrass  2
608Elytrigia pontica ssp. pontica*tall wheatgrass X881
609Eragrostis mexicana ssp. virescensMexican lovegrass  2
610Festuca arundinacea*tall fescueXX7
611Gastridium ventricosum*nit grassXX1
612Hordeum brachyantherum ssp. californicumCalifornia meadow barley X1
613Hordeum depressumlow barley ?613
614Hordeum marinum ssp. gussoneanum*Mediterranean barleyXX1
615Hordeum murinum ssp. glaucum*foxtail barleyXX1
616Hordeum murinum ssp. leporinum*foxtail barleyXX1
617Hordeum vulgare var. trifurcatum*cultivated barley X7
618Koeleria macranthaJune grassXX1
619Lamarckia aurea*goldentopXX1
620Leptochloa uninerviaMexican sprangletop  2
621Leymus condensatusgiant wild-ryeXX81
622Leymus triticoidescreeping wild ryeXX81
623Leymus Xmultiflorus (L. condensatus X L. triticoides)hybrid wild-ryeXX6
624Lolium multiflorum*Italian rye-grassXX81
625Lolium perenne*English rye-grassXX6
626Lolium temulentum*DarnelXX1
627Melica frutescenstall melica X1
628Melica imperfectacoast-range melicXX1
629Muhlenbergia asperifoliascratchgrass X1
630Muhlenbergia microspermalittleseed muhly ?3
631Muhlenbergia rigensdeergrassXX1
632Nassella cernuanodding needlegrassXX81
633Nassella lepidafoothill needlegrassXX81
634Nassella pulchrapurple needlegrassXX81
635Orcuttia californicaCalifornia Orcutt grass X1
636Panicum capillarewitchgrass  2
637Paspalum dilatatum*dallis grassXX1
638Paspalum distichumknot grassXX1
639Pennisetum setaceum*fountain grass  2
640Phalaris aquatica*Harding grassXX2
641Phalaris caroliniana*Carolina canarygrassXX1
642Phalaris minor*little-seed canarygrass X1
643Piptatherum miliaceum*smilo grassXX3
644Poa annua*annual blue grassXX1
645Poa bulbosa*bulbous blue grass ?3
646Poa infirma*weak blue grassXX6
647Poa secunda ssp. secundaone-sided bluegrassXX81
648Polypogon monspeliensis*rabbits-foot grassXX1
649Rhynchelytrum repens*Natal grass X7
650Schismus barbatus*Mediterranean schismusXX69
651Secale cereale*rye X1
652Setaria gracilis  X81
653Setaria viridis*green foxtail  2
654Sorghum halepense*johnsongrass X1
655Triticum aestivum*common wheat X7
656Vulpia bromoides*brome fescueXX1
657Vulpia myuros var. hirsuta*hairy rattail fescueXX1
658Vulpia myuros var. myuros*rattail fescueXX1
659Vulpia octoflora var. octoflorasix-weeks fescueXX6
PotamogetonaceaePondweed Family
660Potamogeton foliosus var. foliosusleafy pondweed X81
661Potamogeton pectinatusfennel-leaved pondweed X1
662Potamogeton pusillussmall pondweed X1
TyphaceaeCat Tail Family
663Sparganium eurycarpum ssp. eurycarpumbur-reed X1
664Typha angustifolianarrow-leaf cattail X1
665Typha domingensissouthern cattailXX1
666Typha latifoliabroadleaf cattail ?3
ZannichelliaceaeHorned-Pondweed Family
667Zannichellia palustrishorned pondweed X1

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Copyright © 2003-2005 by Tom Chester
Permission is freely granted to reproduce any or all of this page as long as credit is given to me at this source:
Comments and feedback: Tom Chester
Last update: 9 June 2005