Flora of Lowermost Snow Creek Area, San Jacinto Mountains

Flora of Lowermost Snow Creek Area, San Jacinto Mountains

Introduction
Botanical Highlights
Species Checklist
Notes on Some Species

Introduction

Fig. 1. The Lowermost Snow Creek Area. Voucher locations are plotted as red dots; some locations are only approximate and/or have imprecise coordinates, making them appear to be outside the Snow Creek drainage basin. The lower part of the PCT is approximately shown. Click on the figure for a larger version. See this figure for a more detailed view of the PCT on the lower San Jacinto Mountain slopes.

This is a flora of the Lowermost Snow Creek Drainage area, below ~3000 feet elevation, made from vouchers, and four days of fieldwork on the PCT.
Fig. 1 shows the area targeted for this flora. The northern boundary of the flora is along I-10 and SR111. The southern boundary is roughly at the 3000 foot elevation contour. The east and west boundaries are along the ridgelines defining the Snow Creek Drainage.
Snow Creek is on the steep north side of San Jacinto Mountain, where the elevation drops from 10,842 feet at the crest to 1,160 feet in Snow Creek, an amazing change of 9,682 feet in only 5.85 miles, a gradient of 1,655 feet per mile. It is testimoney to the steepness that San Jacinto Peak and Folly Peak are visible from the lower section of the PCT as one climbs uphill. In most mountain ranges, intervening ridges would block the view of the highest peaks.
The Pacific Crest Trail is the only trail that traverses the steep north side, switchbacking its way down along a ridgeline.
There is a route that goes up Snow Creek itself, but it requires considerable route-finding, serious rock climbing ability, and crampons and an ice axe during most of the year. This route traverses the private property of the Desert Water Association, and hence is not open to the public. However, it is possible to avoid the private property, with considerable difficulty. We don't recommend trying to climb that route unless you are clearly up to the challenges.
Lowermost Snow Creek is a far gentler place, with a large alluvial fan whose head is at 2,000 feet elevation, dropping to ~1,200 feet at the San Gorgonio River.
Most vouchers in this area were collected on the alluvial fan and the San Gorgonio River, which is just south of I-10 and SR111; see Fig. 1.
Two searches were made for vouchers at the Consortium of California Herbaria on 31 December 2017. The first included all Riverside County vouchers with Snow Creek in their locality field. The second included all georeferenced vouchers in the rectangle from 33.84 to 33.93° N. Latitude and -116.71 to -116.62° E. Longitude. Duplicate vouchers were removed from the combined set, and vouchers with locations or localities that indicated they were outside our targeted area were removed. After removing vouchers determined only to the genus or family, and tossing ten vouchers whose determinations seemed unlikely, 993 vouchers of 317 taxa remained.
The fieldwork included the following PCT surveys, given in time order:

A survey of the entire PCT section B9 from Fuller Ridge to Snow Creek Road by RT and Shaun Hawke on 19 April 2013. Only the lowermost portion of that survey was included in this flora.
A survey of the PCT from Snow Creek Road north to I-10 by RT and Shaun Hawke on February 2015; see The Flora of the PCT: B10, Snow Creek Road to Interstate 10.
A survey of the PCT from Snow Creek Road south 3.1 miles by RT Hawke on 25 February 2015, deemed as Section B9c of the PCT.
A survey of the PCT from Snow Creek Road south 3.3 miles by Tom Chester, Keir Morse, RT and Shaun Hawke, Walt Fidler, Tracy Albrecht and Eileen Berbeo on 26 December 2017.

The fieldwork produced a list of 179 taxa.
The combined checklist contains 340 taxa.
Botanical Highlights

Because the Snow Creek Area is one where coastal, montane and desert habitat meet, it is not surprising that this area has a number of native species for which this area is at the edge of their ranges, including the southernmost, westernmost and easternmost limit for some species. The following table gives some of these species, as well as some other interesting species found here.

Scientific Name Common Name Notes
Astragalus lentiginosus var. coachellae Coachella Valley milk-vetch This is at the westernmost limit for this species, restricted to the Coachella Valley Area.
Bromus arizonicus Arizona brome This is at the easternmost limit for this cismontane taxon in southern California.
Camissonia campestris ssp. campestris field suncup This beautiful DMoj suncup with large showy flowers is close to its southernmost limit here, with only a population in the Hemet area farther south.
Cryptantha corollata Coast Range cryptantha This is near the southernmost limit for this taxon, found only in the Temecula / Aguanga area and north.
Eriophyllum ambiguum var. paleaceum annual woolly sunflower In southern California, this taxon is found only in the Coachella Valley area and in southeasternmost San Diego County.
Eschscholzia papastillii cryptic desert poppy This is a new poppy species defined in 2014 that mostly is confined to the Joshua Tree National Park (JTNP) / Chocolate Mountains area. Snow Creek is the westernmost limit for this taxon for the JTNP population.
Linanthus maculatus ssp. maculatus Little San Bernardino Mtns. gilia This taxon grows only in the area near the western boundary of JTNP; this location is the southwesternmost limit of its range.
Lobelia cardinalis var. pseudosplendens cardinal flower This is an unusual disjunct location for this rare species, whose two main populations are in the eastern San Gabriel Mountains / western San Bernardino Mountains, and in the Julian / Mt. Laguna area.
Lycium torreyi Torrey's boxthorn This species is mostly found along the Colorado River, with scattered vouchers west of there. It is very similar to Lycium andersonii, and at least some of those vouchers, including the one here, may be misdetermined.
Muhlenbergia californica California muhly This is at the southernmost limit for the species, found mainly in the San Gabriel Mountains and San Bernardino Mountains.
Panicum urvilleanum desert panicgrass This area is one of three quite disjunct populations for this species, the Hemet / Coachella Valley population. The other two populations are in the Mojave National Preserve Area, and northwest of Yuma, Arizona.
Phacelia vallis-mortae Death Valley phacelia We thought this had to be a misdetermination of Phacelia cryptantha or P. cicutaria, which are quite similar species. But the Jepson Manual treatment places it in n DSon, and there are a few scattered vouchers in JTNP. If the voucher is correctly determined, this would be the southwesternmost location of this species.
Populus X parryi (P. trichocarpa X P. fremontii) hybrid cottonwood We had not seen this hybrid before, nor even heard of this hybrid having a name, yet there are nine vouchers of it from here!
Psorothamnus arborescens var. simplicifolius California indigo-bush This widespread DMoj plant is close to its southernmost limit here, with mainly only a population in the Hemet area farther south.
Rumex violascens Mexican dock This is an uncommon species in California, with scattered locations from San Francisco to the Mexican border.

In addition, there are two non-native weed species found here that we have never encountered, Brassica juncea, India mustard; and Cycloloma atriplicifolium, winged pigweed.
Fortunately, as far as we know, the new very-invasive annual grass Stipa capensis, spear needlegrass (aka "cape needlegrass", "Mediterranean steppegrass", "twisted-awned speargrass", and "cape ricegrass"), is not present here. That weed has taken over large areas in the Indian Canyons west of Palm Springs; see the one paragraph description of it at the link.
Species Checklist

Basic information about the checklist presentation and links:

Notes on the Scientific Names Used At This Site and
Information about the links from the Scientific Name and Common Name.

An asterisk before the Common Name indicates a non-native taxon.
The column with header #V gives the number of vouchers in this area, truncated at 9.
The column with header B10 indicates whether a taxon was observed in that section of the PCT north of Snow Creek Road to I-10, and gives the order of occurrence in that survey to the north.
The column with header B9c gives a minimum estimate of the number of plants seen in the 3.3 mile section of the PCT south of Snow Creek Road, up to a maximum of 99 plants. An RT indicates a species that was recorded by RT Hawke, but for which no abundance was recorded. One variety has an x in this column, indicating it was present but not counted; see Eriogonum fasciculatum varieties.
Some species are not determined with certainty in sections B9c and B10; those are indicated by a qualifier in front of the entry in that column: ~ indicates this is just our best guess for the species; sp and ssp indicate that the species or subspecies is uncertain; and ? means we have little confidence whether this is the determination.
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# Fam Scientific Name
Link goes to the Jepson eflora (*)Common Name
Link goes to Calphotos #V B10
Order B9c
#Pls
Lycopods
1 Sel Selaginella bigelovii Bigelow's spike-moss 3 99
Ferns
2 Ble Woodwardia fimbriata giant chain fern 5
3 Den Pteridium aquilinum var. pubescens bracken 3
4 Pte Adiantum capillus-veneris maidenhair fern 1
5 Pte Cheilanthes covillei beady lipfern 9 20
6 Pte Cheilanthes parryi woolly lipfern 1 1
7 Pte Cheilanthes viscida sticky lipfern 1
8 Pte Pellaea andromedifolia coffee fern 2 5
9 Pte Pellaea mucronata var. mucronata bird's-foot fern 5 5
10 Pte Pentagramma triangularis ssp. maxonii Maxon's silverback fern 2 20
Gymnosperms
11 Eph Ephedra californica desert tea 9 27 30
Magnoliids
12 Lau Umbellularia californica California bay 1
Eudicots
13 Ama Amaranthus albus *tumble pigweed 1
14 Ama Amaranthus fimbriatus fringed amaranth 2 RT
15 Ana Rhus ovata sugar bush 6 20
16 Ana Schinus molle *Peruvian pepper tree 2
17 Api Bowlesia incana hoary bowlesia 1
18 Api Tauschia arguta southern tauschia 3 1
19 Apo Funastrum cynanchoides var. hartwegii climbing milkweed 9 20 99
20 Ast Acamptopappus sphaerocephalus var. sphaerocephalus goldenhead 6
21 Ast Adenophyllum porophylloides San Felipe dogweed 5 RT
22 Ast Ambrosia acanthicarpa bur-ragweed 2 7 10
23 Ast Ambrosia dumosa burroweed 7 52 1
24 Ast Ambrosia salsola var. salsola cheesebush 6 1 50
25 Ast Artemisia californica California sagebrush 9 99
26 Ast Artemisia dracunculus wild tarragon 1
27 Ast Artemisia ludoviciana ssp. albula white mugwort 6
28 Ast Artemisia ludoviciana ssp. incompta mountain mugwort 1
29 Ast Artemisia ludoviciana ssp. ludoviciana silver wormwood 1
30 Ast Baccharis salicifolia ssp. salicifolia mule fat 4
31 Ast Baccharis sarothroides broom baccharis 2
32 Ast Baccharis sergiloides desert baccharis 4 2
33 Ast Bahiopsis parishii Parish's goldeneye 9 99
34 Ast Bebbia juncea var. aspera sweetbush 7 99
35 Ast Brickellia desertorum desert brickellia 9 15
36 Ast Calycoseris wrightii white tackstem 1
37 Ast Centaurea melitensis *tocalote 34
38 Ast Chaenactis fremontii Fremont pincushion 7 6 RT
39 Ast Corethrogyne filaginifolia California-aster 7 99
40 Ast Dicoria canescens desert dicoria 2 44 1
41 Ast Dimorphotheca sinuata *African daisy 1
42 Ast Encelia actoni Acton encelia 3 20
43 Ast Encelia farinosa brittlebush 5 2 99
44 Ast Ericameria cuneata var. spathulata wide-leaved rock goldenbush 5
45 Ast Ericameria linearifolia narrowleaf goldenbush 3 15
46 Ast Ericameria paniculata blackbanded rabbitbrush 1 85
47 Ast Ericameria parishii var. parishii Parish's goldenbush 3
48 Ast Ericameria pinifolia pine goldenbush 1
49 Ast Erigeron canadensis horseweed 2
50 Ast Erigeron foliosus var. foliosus leafy daisy 4
51 Ast Eriophyllum ambiguum var. paleaceum annual woolly sunflower 2
52 Ast Eriophyllum confertiflorum var. confertiflorum golden yarrow 4
53 Ast Eriophyllum wallacei Wallace's woolly daisy 9 66
54 Ast Geraea canescens hairy desert-sunflower ~54
55 Ast Gutierrezia californica California matchweed 4
56 Ast Gutierrezia sarothrae matchweed ~5
57 Ast Hedypnois cretica *Crete weed 1
58 Ast Helianthus gracilentus slender sunflower 3
59 Ast Heterotheca grandiflora telegraph weed 2
60 Ast Lasthenia coronaria southern goldfields 5 sp15 RT
61 Ast Layia platyglossa common tidy-tips 67
62 Ast Lepidospartum squamatum scale-broom 4 61 20
63 Ast Leptosyne californica California coreopsis 1
64 Ast Logfia depressa dwarf filago 3
65 Ast Logfia filaginoides California filago 3 17 50
66 Ast Malacothrix glabrata desert dandelion 6 19 RT
67 Ast Palafoxia arida var. arida Spanish needle 4 62
68 Ast Pseudognaphalium biolettii bicolored everlasting 1 10
69 Ast Pseudognaphalium luteoalbum *common cudweed 1
70 Ast Pseudognaphalium microcephalum white everlasting 1
71 Ast Rafinesquia californica California chicory 1 ~5
72 Ast Rafinesquia neomexicana desert chicory 3 9 RT
73 Ast Senecio vulgaris *common groundsel 57
74 Ast Solidago velutina ssp. californica goldenrod 5
75 Ast Sonchus asper ssp. asper *prickly sow thistle 1
76 Ast Sonchus oleraceus *sow thistle 1 76 RT
77 Ast Stephanomeria exigua ssp. exigua slender wreathplant 9 3
78 Ast Stephanomeria pauciflora wire-lettuce 1 71 3
79 Ast Uropappus lindleyi silver puffs 1
80 Bet Alnus rhombifolia white alder 7
81 Big Chilopsis linearis ssp. arcuata desert-willow 7 64 2
82 Bor Amsinckia intermedia common fiddleneck 5 1
83 Bor Amsinckia tessellata var. tessellata bristly fiddleneck 2 sp23
84 Bor Cryptantha barbigera var. fergusoniae Santa Rosa Mountain bearded cryptantha 6 24 RT
85 Bor Cryptantha circumscissa var. circumscissa cushion cryptantha 2
86 Bor Cryptantha corollata Coast Range cryptantha 1
87 Bor Cryptantha intermedia var. intermedia popcorn flower 1 ~81
88 Bor Cryptantha micrantha var. micrantha red-root cryptantha 1
89 Bor Cryptantha muricata prickly cryptantha 3
90 Bor Cryptantha pterocarya var. purpusii Purpus' wing-nut cryptantha 2
91 Bor Emmenanthe penduliflora var. penduliflora whispering bells 1 ~65 1
92 Bor Eriodictyon crassifolium var. crassifolium thick-leaved yerba santa 9 33 99
93 Bor Eucrypta chrysanthemifolia var. bipinnatifida eucrypta 1
94 Bor Eucrypta chrysanthemifolia var. chrysanthemifolia eucrypta 2
95 Bor Nemophila menziesii baby blue eyes 2 60
96 Bor Pectocarya heterocarpa chuckwalla pectocarya 46 RT
97 Bor Pectocarya linearis ssp. ferocula slender combseed 2
98 Bor Pectocarya penicillata combseed 1
99 Bor Phacelia brachyloba short-lobed phacelia 1
100 Bor Phacelia campanularia ssp. campanularia desert bluebells 2
101 Bor Phacelia cicutaria var. hispida caterpillar phacelia RT
102 Bor Phacelia cryptantha limestone phacelia 1
103 Bor Phacelia distans common phacelia 4 4 40
104 Bor Phacelia minor wild canterbury bells 5 37 40
105 Bor Phacelia ramosissima branching phacelia 4
106 Bor Phacelia vallis-mortae Death Valley phacelia 1
107 Bor Pholistoma membranaceum white fiesta flower 3 RT
108 Bor Plagiobothrys arizonicus Arizona popcorn flower 4
109 Bor Tiquilia plicata plicate coldenia 2 73
110 Bra Athysanus pusillus dwarf athysanus 1
111 Bra Boechera perennans perennial rock-cress 1
112 Bra Brassica juncea *India mustard 1
113 Bra Brassica tournefortii *Sahara mustard 9 3 99
114 Bra Capsella bursa-pastoris *shepherd's purse 1 51
115 Bra Dithyrea californica spectacle-pod 1
116 Bra Lepidium lasiocarpum ssp. lasiocarpum hairy-podded pepper-grass 1 10
117 Bra Sisymbrium altissimum *tumble-mustard 1
118 Bra Sisymbrium irio *London rocket 1 43 RT
119 Bra Streptanthella longirostris longbeak streptanthella 1
120 Bra Thysanocarpus curvipes ssp. eradiatus fringe-pod 4 ~RT
121 Cac Cylindropuntia echinocarpa silver cholla 2 10 50
122 Cac Opuntia basilaris var. basilaris beavertail cactus 5 5
123 Cac Opuntia phaeacantha desert prickly-pear 1
124 Cam Lobelia cardinalis var. pseudosplendens cardinal flower 5
125 Cam Nemacladus longiflorus var. breviflorus thread plant 2
126 Car Loeflingia squarrosa spreading loeflingia 4 68 5
127 Car Stellaria media *common chickweed 1
128 Che Atriplex canescens var. canescens four-wing saltbush 4 82 1
129 Che Chenopodium berlandieri pit-seed goosefoot 1 sp45
130 Che Chenopodium murale *nettle-leaved goosefoot 1
131 Che Cycloloma atriplicifolium *winged pigweed 1
132 Che Dysphania ambrosioides *Mexican tea 2
133 Che Salsola paulsenii *Paulsen's Russian thistle sp35
134 Cle Peritoma arborea var. angustata desert bladderpod 72 1
135 Cle Peritoma arborea var. arborea bladderpod 1
136 Con Cuscuta californica California dodder sp32
137 Cra Crassula connata pygmy-weed 2 26 50
138 Cra Dudleya saxosa ssp. aloides desert dudleya 4 30
139 Cro Crossosoma bigelovii rock crossosoma 7
140 Cuc Cucurbita foetidissima stinking gourd 1
141 Cuc Marah macrocarpa wild-cucumber 5 2
142 Eup Chamaesyce micromera Sonoran spurge 2
143 Eup Chamaesyce polycarpa small-seeded spurge 4 16 40
144 Eup Croton californicus California croton 9 59 5
145 Eup Ricinus communis *castor bean 1
146 Eup Stillingia linearifolia linear-leaved stillingia 6 69 20
147 Fab Acmispon argophyllus var. argophyllus southern California silver-lotus 1
148 Fab Acmispon glaber var. brevialatus short-winged deerweed 9 70 99
149 Fab Acmispon grandiflorus var. grandiflorus chaparral lotus 1
150 Fab Acmispon micranthus San Diego birdsfoot lotus 2
151 Fab Acmispon strigosus strigose lotus 6 11 RT
152 Fab Astragalus douglasii Jacumba milk-vetch 1
153 Fab Astragalus lentiginosus var. coachellae Coachella Valley milk-vetch 9
154 Fab Hoita macrostachya leather root 3
155 Fab Hosackia oblongifolia var. oblongifolia streambank lotus 1
156 Fab Lupinus bicolor dwarf lupine 4
157 Fab Lupinus concinnus bajada lupine 3
158 Fab Lupinus hirsutissimus stinging lupine 4 84
159 Fab Lupinus sparsiflorus Coulter's lupine 9 ~18 RT
160 Fab Lupinus truncatus collar lupine 5
161 Fab Medicago minima *burclover 1
162 Fab Parkinsonia aculeata *Mexican palo verde 1
163 Fab Psorothamnus arborescens var. simplicifolius California indigo-bush 5 3
164 Fab Psorothamnus emoryi Emory's indigo-bush 28 RT
165 Fab Psorothamnus schottii indigo bush 1
166 Fab Robinia pseudoacacia *black locust 1
167 Fab Senegalia greggii catclaw 3 12 99
168 Fag Quercus agrifolia coast live oak 1 ~63
169 Fag Quercus wislizeni var. frutescens interior live oak 9 5
170 Gen Frasera neglecta pine green-gentian 1
171 Ger Erodium botrys *long-beaked filaree 1
172 Ger Erodium cicutarium *redstem filaree 4 14 RT
173 Gro Ribes indecorum white-flowering currant 2 2
174 Gro Ribes malvaceum var. viridifolium chaparral currant 1
175 Kra Krameria bicolor white rhatany 4 41 2
176 Lam Lamium amplexicaule *henbit 1
177 Lam Salvia apiana white sage 8 2
178 Lam Salvia columbariae chia 3 10
179 Loa Mentzelia involucrata bracted blazing star 1
180 Loa Petalonyx thurberi ssp. thurberi Thurber's sandpaper-plant 1 74
181 Mal Eremalche exilis white mallow 47
182 Mal Fremontodendron californicum California fremontia 2
183 Mal Malacothamnus fasciculatus chaparral bush mallow 3 31 5
184 Mal Malva parviflora *cheeseweed ~53
185 Mal Sphaeralcea ambigua apricot mallow 2 ssp10
186 Mon Calandrinia ciliata red maids 2 48
187 Mon Calyptridium monandrum sand cress 2 RT
188 Mon Claytonia parviflora ssp. parviflora narrow-leaved miner's lettuce 1
189 Mon Claytonia perfoliata ssp. perfoliata miner's lettuce 1
190 Myr Eucalyptus camaldulensis *Red River gum 1
191 Nyc Abronia villosa var. villosa hairy sand-verbena 6 42
192 Nyc Boerhavia coccinea scarlet spiderling 1
193 Nyc Mirabilis laevis var. crassifolia California four o'clock 1
194 Nyc Mirabilis laevis var. retrorsa Bigelow's desert four-o'clock 2 ~25 RT
195 Nyc Mirabilis laevis var. villosa Bigelow's desert four-o'clock 1
196 Ole Olea europaea *olive 1 1
197 Ona Camissonia campestris ssp. campestris field suncup 1
198 Ona Camissoniopsis bistorta southern suncup 1
199 Ona Camissoniopsis confusa San Bernardino suncup 5
200 Ona Camissoniopsis hirtella field suncup 1
201 Ona Camissoniopsis pallida ssp. hallii Hall's suncup 2
202 Ona Camissoniopsis pallida ssp. pallida pale suncup 3 13 RT
203 Ona Chylismia claviformis ssp. aurantiaca brown-eyed primrose 8 58
204 Ona Clarkia rhomboidea diamond-petaled clarkia 1
205 Ona Epilobium canum ssp. latifolium mountain California-fuchsia 5 10
206 Ona Epilobium ciliatum ssp. ciliatum willowherb 1
207 Ona Eulobus californicus California suncup 5 5 99
208 Ona Oenothera deltoides ssp. deltoides dune primrose 2
209 Ona Oenothera elata ssp. hirsutissima Hooker's evening-primrose 5
210 Oro Castilleja exserta ssp. exserta purple owl's-clover 1
211 Oro Castilleja foliolosa woolly Indian paintbrush 4
212 Oro Cordylanthus rigidus ssp. setiger bristly bird's beak 1
213 Oro Orobanche fasciculata clustered broomrape 1
214 Pap Argemone munita prickly poppy 3
215 Pap Dendromecon rigida bush poppy 4
216 Pap Ehrendorferia chrysantha golden ear drops 3 1
217 Pap Eschscholzia minutiflora small-flowered poppy 1
218 Pap Eschscholzia papastillii cryptic desert poppy 1 ~RT
219 Phr Mimulus aurantiacus var. pubescens hairy bush monkeyflower 3
220 Phr Mimulus cardinalis scarlet monkeyflower 2
221 Phr Mimulus guttatus common monkeyflower 6
222 Phr Mimulus pilosus false monkeyflower 2
223 Pla Antirrhinum coulterianum Coulter's snapdragon 2 5
224 Pla Antirrhinum nuttallianum ssp. nuttallianum purple snapdragon 1 5
225 Pla Collinsia concolor southern Chinese houses 3 ~20
226 Pla Keckiella antirrhinoides var. antirrhinoides chaparral beardtongue 3 20
227 Pla Penstemon centranthifolius scarlet bugler 1
228 Pla Penstemon clevelandii var. connatus San Jacinto beardtongue 2
229 Pla Plantago major *common plantain 1
230 Pla Plantago ovata desert plantain 1
231 Pla Plantago patagonica Patagonia plantain 5
232 Pla Platanus racemosa western sycamore 9 10
233 Pol Eriastrum diffusum miniature woolly-star 1
234 Pol Eriastrum eremicum ssp. eremicum desert woolly-star 4 15
235 Pol Gilia angelensis angel's gilia 4
236 Pol Gilia ochroleuca ssp. exilis volcanic gilia 3
237 Pol Gilia stellata star gilia 40 spRT
238 Pol Linanthus dianthiflorus ground pink 6 RT
239 Pol Linanthus maculatus ssp. maculatus Little San Bernardino Mtns. gilia 1
240 Pol Saltugilia australis southern gilia 2 1
241 Pol Chorizanthe brevicornu var. brevicornu brittle spineflower 1 20
242 Pol Chorizanthe xanti var. leucotheca white-bracted spineflower 6
243 Pol Eriogonum davidsonii Davidson's buckwheat 1
244 Pol Eriogonum elongatum var. elongatum long-stemmed buckwheat 6 99
245 Pol Eriogonum fasciculatum var. foliolosum California buckwheat 4 x
246 Pol Eriogonum fasciculatum var. polifolium California buckwheat 6 75 99
247 Pol Eriogonum gracile var. gracile slender buckwheat 1
248 Pol Eriogonum gracile var. incultum slender buckwheat 1
249 Pol Eriogonum pusillum yellow-turbans 1
250 Pol Eriogonum thurberi Thurber's buckwheat 5
251 Pol Eriogonum wrightii var. nodosum Wright's buckwheat 6 10
252 Pol Persicaria punctata punctate smartweed 1
253 Pol Polygonum aviculare ssp. depressum *knotweed 55
254 Pol Pterostegia drymarioides fairy bowties, threadstem 4 RT
255 Pol Rumex californicus willow-leaved dock 1
256 Pol Rumex hymenosepalus wild rhubarb 4 50
257 Pol Rumex violascens Mexican dock 1
258 Ran Aquilegia formosa western columbine 3
259 Ran Clematis pauciflora virgin's bower 6 20
260 Ran Delphinium parishii ssp. parishii Parish's larkspur 4 ~1
261 Ran Delphinium parryi ssp. parryi blue larkspur 1
262 Ran Ranunculus californicus California buttercup 1
263 Rha Ceanothus leucodermis chaparral whitethorn 7
264 Rha Ceanothus oliganthus var. oliganthus hairy ceanothus 1
265 Rha Ceanothus perplexans cupped-leaf ceanothus 7 5
266 Rha Rhamnus ilicifolia hollyleaf redberry 1
267 Rha Ziziphus parryi var. parryi lotebush 9 10
268 Ros Adenostoma fasciculatum chamise 4 40
269 Ros Cercocarpus betuloides var. betuloides birch-leaf mountain-mahogany 2
270 Ros Prunus ilicifolia ssp. ilicifolia hollyleaf cherry 7 30
271 Rub Galium angustifolium ssp. angustifolium narrowleaf bedstraw 10
272 Rub Galium angustifolium ssp. gracillimum slender bedstraw 4
273 Sal Populus fremontii ssp. fremontii Fremont cottonwood 5
274 Sal Populus X parryi (P. trichocarpa X P. fremontii) hybrid cottonwood 9
275 Sal Salix exigua narrowleaf willow 4
276 Sal Salix laevigata red willow 4
277 Sal Salix lasiandra var. lasiandra shining willow 1
278 Sax Boykinia rotundifolia round-leaved boykinia 2
279 Sax Heuchera hirsutissima shaggy-haired alumroot 1
280 Scr Scrophularia californica California bee plant 2
281 Sim Ailanthus altissima *tree-of-heaven 1
282 Sim Simmondsia chinensis jojoba 1 10
283 Sol Datura wrightii sacred datura 3 38 3
284 Sol Lycium andersonii Anderson's boxthorn 5 29 5
285 Sol Lycium torreyi Torrey's boxthorn 2
286 Sol Nicotiana obtusifolia desert tobacco 2 5
287 Sol Physalis crassifolia thick-leaved ground cherry 3 1
288 Sol Solanum douglasii white nightshade 2
289 Tam Tamarix aphylla *athel 1 86
290 Tam Tamarix chinensis *Chinese tamarisk 1
291 Ulm Ulmus parvifolia *Chinese elm 1
292 Urt Parietaria hespera var. hespera pellitory 2 RT
293 Ver Verbena lasiostachys western vervain 1
294 Vis Phoradendron californicum desert mistletoe 1 50
295 Vis Phoradendron serotinum ssp. tomentosum oak mistletoe 1
296 Vit Vitis girdiana wild grape 4
297 Zyg Larrea tridentata creosote bush 6 21 99
Monocots
298 Aga Hesperoyucca whipplei chaparral yucca 4 5
299 Cyp Carex alma sturdy sedge 4
300 Cyp Carex fracta fragile sheath sedge 3
301 Cyp Carex sartwelliana Yosemite sedge 1
302 Cyp Carex schottii Schott's sedge 3
303 Cyp Carex senta swamp sedge 2
304 Jun Juncus balticus ssp. ater wire rush 1
305 Jun Juncus rugulosus wrinkled rush 3
306 Jun Juncus textilis basket rush 2
307 Lil Calochortus concolor golden-bowl mariposa 3 ~5
308 Orc Epipactis gigantea stream orchid 4
309 Poa Aristida purpurea var. nealleyi Nealley three-awn 3 1
310 Poa Arundo donax *giant reed 3
311 Poa Avena barbata *slender wild oats 2 RT
312 Poa Bromus arizonicus Arizona brome 5
313 Poa Bromus berteroanus Chilean chess 1
314 Poa Bromus diandrus *ripgut brome 1 99
315 Poa Bromus madritensis ssp. rubens *red brome 1 99
316 Poa Bromus tectorum *downy brome 83 RT
317 Poa Cynodon dactylon *Bermuda grass ~79
318 Poa Echinochloa crus-galli *barnyard grass 1
319 Poa Festuca myuros *rattail fescue 1
320 Poa Festuca octoflora six-weeks fescue 3
321 Poa Hordeum murinum *foxtail barley 1 30 RT
322 Poa Melica frutescens tall melica 2 3
323 Poa Melica imperfecta coast-range melic 2 1
324 Poa Muhlenbergia californica California muhly 4
325 Poa Muhlenbergia microsperma littleseed muhly 4 RT
326 Poa Muhlenbergia rigens deergrass 1 ~RT
327 Poa Panicum urvilleanum desert panicgrass 6
328 Poa Pennisetum setaceum *fountain grass 2 99
329 Poa Phragmites australis common reed 1
330 Poa Poa secunda ssp. secunda one-sided bluegrass 2 5
331 Poa Polypogon monspeliensis *rabbits-foot grass 1
332 Poa Schismus barbatus *Mediterranean schismus 3 8 99
333 Poa Setaria viridis *green foxtail 1
334 Poa Stipa coronata giant needlegrass 2 3
335 Poa Stipa hymenoides Indian ricegrass 6 78
336 Poa Stipa miliacea var. miliacea *smilo grass 2
337 Poa Stipa occidentalis var. pubescens Elmer's needlegrass 1
338 Poa Stipa speciosa desert needlegrass 3 5
339 The Dichelostemma capitatum blue dicks 2 22 RT
340 The Muilla maritima muilla 1

Notes on Some Species

Eriogonum fasciculatum. Both variety foliolosum and variety polifolium are found on the PCT, sometimes almost side by side. We did not count the number of plants for each variety separately, and just report the numbers for both under variety polifolium, with an x in the column for var. foliolosum.

Voucher data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/) on 29 December 2017.

Scientific Name	Common Name	Notes
Astragalus lentiginosus var. coachellae	Coachella Valley milk-vetch	This is at the westernmost limit for this species, restricted to the Coachella Valley Area.
Bromus arizonicus	Arizona brome	This is at the easternmost limit for this cismontane taxon in southern California.
Camissonia campestris ssp. campestris	field suncup	This beautiful DMoj suncup with large showy flowers is close to its southernmost limit here, with only a population in the Hemet area farther south.
Cryptantha corollata	Coast Range cryptantha	This is near the southernmost limit for this taxon, found only in the Temecula / Aguanga area and north.
Eriophyllum ambiguum var. paleaceum	annual woolly sunflower	In southern California, this taxon is found only in the Coachella Valley area and in southeasternmost San Diego County.
Eschscholzia papastillii	cryptic desert poppy	This is a new poppy species defined in 2014 that mostly is confined to the Joshua Tree National Park (JTNP) / Chocolate Mountains area. Snow Creek is the westernmost limit for this taxon for the JTNP population.
Linanthus maculatus ssp. maculatus	Little San Bernardino Mtns. gilia	This taxon grows only in the area near the western boundary of JTNP; this location is the southwesternmost limit of its range.
Lobelia cardinalis var. pseudosplendens	cardinal flower	This is an unusual disjunct location for this rare species, whose two main populations are in the eastern San Gabriel Mountains / western San Bernardino Mountains, and in the Julian / Mt. Laguna area.
Lycium torreyi	Torrey's boxthorn	This species is mostly found along the Colorado River, with scattered vouchers west of there. It is very similar to Lycium andersonii, and at least some of those vouchers, including the one here, may be misdetermined.
Muhlenbergia californica	California muhly	This is at the southernmost limit for the species, found mainly in the San Gabriel Mountains and San Bernardino Mountains.
Panicum urvilleanum	desert panicgrass	This area is one of three quite disjunct populations for this species, the Hemet / Coachella Valley population. The other two populations are in the Mojave National Preserve Area, and northwest of Yuma, Arizona.
Phacelia vallis-mortae	Death Valley phacelia	We thought this had to be a misdetermination of Phacelia cryptantha or P. cicutaria, which are quite similar species. But the Jepson Manual treatment places it in n DSon, and there are a few scattered vouchers in JTNP. If the voucher is correctly determined, this would be the southwesternmost location of this species.
Populus X parryi (P. trichocarpa X P. fremontii)	hybrid cottonwood	We had not seen this hybrid before, nor even heard of this hybrid having a name, yet there are nine vouchers of it from here!
Psorothamnus arborescens var. simplicifolius	California indigo-bush	This widespread DMoj plant is close to its southernmost limit here, with mainly only a population in the Hemet area farther south.
Rumex violascens	Mexican dock	This is an uncommon species in California, with scattered locations from San Francisco to the Mexican border.

#	Fam	Scientific Name Link goes to the Jepson eflora	(*)Common Name Link goes to Calphotos	#V	B10 Order	B9c #Pls
Lycopods
1	Sel	Selaginella bigelovii	Bigelow's spike-moss	3		99
Ferns
2	Ble	Woodwardia fimbriata	giant chain fern	5
3	Den	Pteridium aquilinum var. pubescens	bracken	3
4	Pte	Adiantum capillus-veneris	maidenhair fern	1
5	Pte	Cheilanthes covillei	beady lipfern	9		20
6	Pte	Cheilanthes parryi	woolly lipfern	1		1
7	Pte	Cheilanthes viscida	sticky lipfern	1
8	Pte	Pellaea andromedifolia	coffee fern	2		5
9	Pte	Pellaea mucronata var. mucronata	bird's-foot fern	5		5
10	Pte	Pentagramma triangularis ssp. maxonii	Maxon's silverback fern	2		20
Gymnosperms
11	Eph	Ephedra californica	desert tea	9	27	30
Magnoliids
12	Lau	Umbellularia californica	California bay	1
Eudicots
13	Ama	Amaranthus albus	*tumble pigweed	1
14	Ama	Amaranthus fimbriatus	fringed amaranth	2		RT
15	Ana	Rhus ovata	sugar bush	6		20
16	Ana	Schinus molle	*Peruvian pepper tree	2
17	Api	Bowlesia incana	hoary bowlesia	1
18	Api	Tauschia arguta	southern tauschia	3		1
19	Apo	Funastrum cynanchoides var. hartwegii	climbing milkweed	9	20	99
20	Ast	Acamptopappus sphaerocephalus var. sphaerocephalus	goldenhead	6
21	Ast	Adenophyllum porophylloides	San Felipe dogweed	5		RT
22	Ast	Ambrosia acanthicarpa	bur-ragweed	2	7	10
23	Ast	Ambrosia dumosa	burroweed	7	52	1
24	Ast	Ambrosia salsola var. salsola	cheesebush	6	1	50
25	Ast	Artemisia californica	California sagebrush	9		99
26	Ast	Artemisia dracunculus	wild tarragon	1
27	Ast	Artemisia ludoviciana ssp. albula	white mugwort	6
28	Ast	Artemisia ludoviciana ssp. incompta	mountain mugwort	1
29	Ast	Artemisia ludoviciana ssp. ludoviciana	silver wormwood	1
30	Ast	Baccharis salicifolia ssp. salicifolia	mule fat	4
31	Ast	Baccharis sarothroides	broom baccharis	2
32	Ast	Baccharis sergiloides	desert baccharis	4		2
33	Ast	Bahiopsis parishii	Parish's goldeneye	9		99
34	Ast	Bebbia juncea var. aspera	sweetbush	7		99
35	Ast	Brickellia desertorum	desert brickellia	9		15
36	Ast	Calycoseris wrightii	white tackstem	1
37	Ast	Centaurea melitensis	*tocalote		34
38	Ast	Chaenactis fremontii	Fremont pincushion	7	6	RT
39	Ast	Corethrogyne filaginifolia	California-aster	7		99
40	Ast	Dicoria canescens	desert dicoria	2	44	1
41	Ast	Dimorphotheca sinuata	*African daisy	1
42	Ast	Encelia actoni	Acton encelia	3		20
43	Ast	Encelia farinosa	brittlebush	5	2	99
44	Ast	Ericameria cuneata var. spathulata	wide-leaved rock goldenbush			5
45	Ast	Ericameria linearifolia	narrowleaf goldenbush	3		15
46	Ast	Ericameria paniculata	blackbanded rabbitbrush	1	85
47	Ast	Ericameria parishii var. parishii	Parish's goldenbush	3
48	Ast	Ericameria pinifolia	pine goldenbush	1
49	Ast	Erigeron canadensis	horseweed	2
50	Ast	Erigeron foliosus var. foliosus	leafy daisy	4
51	Ast	Eriophyllum ambiguum var. paleaceum	annual woolly sunflower	2
52	Ast	Eriophyllum confertiflorum var. confertiflorum	golden yarrow	4
53	Ast	Eriophyllum wallacei	Wallace's woolly daisy	9	66
54	Ast	Geraea canescens	hairy desert-sunflower		~54
55	Ast	Gutierrezia californica	California matchweed	4
56	Ast	Gutierrezia sarothrae	matchweed			~5
57	Ast	Hedypnois cretica	*Crete weed	1
58	Ast	Helianthus gracilentus	slender sunflower	3
59	Ast	Heterotheca grandiflora	telegraph weed	2
60	Ast	Lasthenia coronaria	southern goldfields	5	sp15	RT
61	Ast	Layia platyglossa	common tidy-tips		67
62	Ast	Lepidospartum squamatum	scale-broom	4	61	20
63	Ast	Leptosyne californica	California coreopsis	1
64	Ast	Logfia depressa	dwarf filago	3
65	Ast	Logfia filaginoides	California filago	3	17	50
66	Ast	Malacothrix glabrata	desert dandelion	6	19	RT
67	Ast	Palafoxia arida var. arida	Spanish needle	4	62
68	Ast	Pseudognaphalium biolettii	bicolored everlasting	1		10
69	Ast	Pseudognaphalium luteoalbum	*common cudweed	1
70	Ast	Pseudognaphalium microcephalum	white everlasting	1
71	Ast	Rafinesquia californica	California chicory	1		~5
72	Ast	Rafinesquia neomexicana	desert chicory	3	9	RT
73	Ast	Senecio vulgaris	*common groundsel		57
74	Ast	Solidago velutina ssp. californica	goldenrod	5
75	Ast	Sonchus asper ssp. asper	*prickly sow thistle	1
76	Ast	Sonchus oleraceus	*sow thistle	1	76	RT
77	Ast	Stephanomeria exigua ssp. exigua	slender wreathplant	9		3
78	Ast	Stephanomeria pauciflora	wire-lettuce	1	71	3
79	Ast	Uropappus lindleyi	silver puffs	1
80	Bet	Alnus rhombifolia	white alder	7
81	Big	Chilopsis linearis ssp. arcuata	desert-willow	7	64	2
82	Bor	Amsinckia intermedia	common fiddleneck	5		1
83	Bor	Amsinckia tessellata var. tessellata	bristly fiddleneck	2	sp23
84	Bor	Cryptantha barbigera var. fergusoniae	Santa Rosa Mountain bearded cryptantha	6	24	RT
85	Bor	Cryptantha circumscissa var. circumscissa	cushion cryptantha	2
86	Bor	Cryptantha corollata	Coast Range cryptantha	1
87	Bor	Cryptantha intermedia var. intermedia	popcorn flower	1	~81
88	Bor	Cryptantha micrantha var. micrantha	red-root cryptantha	1
89	Bor	Cryptantha muricata	prickly cryptantha	3
90	Bor	Cryptantha pterocarya var. purpusii	Purpus' wing-nut cryptantha	2
91	Bor	Emmenanthe penduliflora var. penduliflora	whispering bells	1	~65	1
92	Bor	Eriodictyon crassifolium var. crassifolium	thick-leaved yerba santa	9	33	99
93	Bor	Eucrypta chrysanthemifolia var. bipinnatifida	eucrypta			1
94	Bor	Eucrypta chrysanthemifolia var. chrysanthemifolia	eucrypta	2
95	Bor	Nemophila menziesii	baby blue eyes	2	60
96	Bor	Pectocarya heterocarpa	chuckwalla pectocarya		46	RT
97	Bor	Pectocarya linearis ssp. ferocula	slender combseed	2
98	Bor	Pectocarya penicillata	combseed	1
99	Bor	Phacelia brachyloba	short-lobed phacelia	1
100	Bor	Phacelia campanularia ssp. campanularia	desert bluebells	2
101	Bor	Phacelia cicutaria var. hispida	caterpillar phacelia			RT
102	Bor	Phacelia cryptantha	limestone phacelia	1
103	Bor	Phacelia distans	common phacelia	4	4	40
104	Bor	Phacelia minor	wild canterbury bells	5	37	40
105	Bor	Phacelia ramosissima	branching phacelia	4
106	Bor	Phacelia vallis-mortae	Death Valley phacelia	1
107	Bor	Pholistoma membranaceum	white fiesta flower	3		RT
108	Bor	Plagiobothrys arizonicus	Arizona popcorn flower	4
109	Bor	Tiquilia plicata	plicate coldenia	2	73
110	Bra	Athysanus pusillus	dwarf athysanus	1
111	Bra	Boechera perennans	perennial rock-cress	1
112	Bra	Brassica juncea	*India mustard	1
113	Bra	Brassica tournefortii	*Sahara mustard	9	3	99
114	Bra	Capsella bursa-pastoris	*shepherd's purse	1	51
115	Bra	Dithyrea californica	spectacle-pod	1
116	Bra	Lepidium lasiocarpum ssp. lasiocarpum	hairy-podded pepper-grass	1		10
117	Bra	Sisymbrium altissimum	*tumble-mustard	1
118	Bra	Sisymbrium irio	*London rocket	1	43	RT
119	Bra	Streptanthella longirostris	longbeak streptanthella	1
120	Bra	Thysanocarpus curvipes ssp. eradiatus	fringe-pod	4		~RT
121	Cac	Cylindropuntia echinocarpa	silver cholla	2	10	50
122	Cac	Opuntia basilaris var. basilaris	beavertail cactus	5		5
123	Cac	Opuntia phaeacantha	desert prickly-pear			1
124	Cam	Lobelia cardinalis var. pseudosplendens	cardinal flower	5
125	Cam	Nemacladus longiflorus var. breviflorus	thread plant	2
126	Car	Loeflingia squarrosa	spreading loeflingia	4	68	5
127	Car	Stellaria media	*common chickweed	1
128	Che	Atriplex canescens var. canescens	four-wing saltbush	4	82	1
129	Che	Chenopodium berlandieri	pit-seed goosefoot	1	sp45
130	Che	Chenopodium murale	*nettle-leaved goosefoot	1
131	Che	Cycloloma atriplicifolium	*winged pigweed	1
132	Che	Dysphania ambrosioides	*Mexican tea	2
133	Che	Salsola paulsenii	*Paulsen's Russian thistle		sp35
134	Cle	Peritoma arborea var. angustata	desert bladderpod		72	1
135	Cle	Peritoma arborea var. arborea	bladderpod	1
136	Con	Cuscuta californica	California dodder		sp32
137	Cra	Crassula connata	pygmy-weed	2	26	50
138	Cra	Dudleya saxosa ssp. aloides	desert dudleya	4		30
139	Cro	Crossosoma bigelovii	rock crossosoma	7
140	Cuc	Cucurbita foetidissima	stinking gourd	1
141	Cuc	Marah macrocarpa	wild-cucumber	5		2
142	Eup	Chamaesyce micromera	Sonoran spurge	2
143	Eup	Chamaesyce polycarpa	small-seeded spurge	4	16	40
144	Eup	Croton californicus	California croton	9	59	5
145	Eup	Ricinus communis	*castor bean	1
146	Eup	Stillingia linearifolia	linear-leaved stillingia	6	69	20
147	Fab	Acmispon argophyllus var. argophyllus	southern California silver-lotus	1
148	Fab	Acmispon glaber var. brevialatus	short-winged deerweed	9	70	99
149	Fab	Acmispon grandiflorus var. grandiflorus	chaparral lotus	1
150	Fab	Acmispon micranthus	San Diego birdsfoot lotus	2
151	Fab	Acmispon strigosus	strigose lotus	6	11	RT
152	Fab	Astragalus douglasii	Jacumba milk-vetch	1
153	Fab	Astragalus lentiginosus var. coachellae	Coachella Valley milk-vetch	9
154	Fab	Hoita macrostachya	leather root	3
155	Fab	Hosackia oblongifolia var. oblongifolia	streambank lotus	1
156	Fab	Lupinus bicolor	dwarf lupine	4
157	Fab	Lupinus concinnus	bajada lupine	3
158	Fab	Lupinus hirsutissimus	stinging lupine	4	84
159	Fab	Lupinus sparsiflorus	Coulter's lupine	9	~18	RT
160	Fab	Lupinus truncatus	collar lupine	5
161	Fab	Medicago minima	*burclover	1
162	Fab	Parkinsonia aculeata	*Mexican palo verde			1
163	Fab	Psorothamnus arborescens var. simplicifolius	California indigo-bush	5		3
164	Fab	Psorothamnus emoryi	Emory's indigo-bush		28	RT
165	Fab	Psorothamnus schottii	indigo bush	1
166	Fab	Robinia pseudoacacia	*black locust	1
167	Fab	Senegalia greggii	catclaw	3	12	99
168	Fag	Quercus agrifolia	coast live oak	1	~63
169	Fag	Quercus wislizeni var. frutescens	interior live oak	9		5
170	Gen	Frasera neglecta	pine green-gentian	1
171	Ger	Erodium botrys	*long-beaked filaree	1
172	Ger	Erodium cicutarium	*redstem filaree	4	14	RT
173	Gro	Ribes indecorum	white-flowering currant	2		2
174	Gro	Ribes malvaceum var. viridifolium	chaparral currant	1
175	Kra	Krameria bicolor	white rhatany	4	41	2
176	Lam	Lamium amplexicaule	*henbit	1
177	Lam	Salvia apiana	white sage	8		2
178	Lam	Salvia columbariae	chia	3		10
179	Loa	Mentzelia involucrata	bracted blazing star	1
180	Loa	Petalonyx thurberi ssp. thurberi	Thurber's sandpaper-plant	1	74
181	Mal	Eremalche exilis	white mallow		47
182	Mal	Fremontodendron californicum	California fremontia	2
183	Mal	Malacothamnus fasciculatus	chaparral bush mallow	3	31	5
184	Mal	Malva parviflora	*cheeseweed		~53
185	Mal	Sphaeralcea ambigua	apricot mallow	2		ssp10
186	Mon	Calandrinia ciliata	red maids	2	48
187	Mon	Calyptridium monandrum	sand cress	2		RT
188	Mon	Claytonia parviflora ssp. parviflora	narrow-leaved miner's lettuce	1
189	Mon	Claytonia perfoliata ssp. perfoliata	miner's lettuce	1
190	Myr	Eucalyptus camaldulensis	*Red River gum	1
191	Nyc	Abronia villosa var. villosa	hairy sand-verbena	6	42
192	Nyc	Boerhavia coccinea	scarlet spiderling	1
193	Nyc	Mirabilis laevis var. crassifolia	California four o'clock	1
194	Nyc	Mirabilis laevis var. retrorsa	Bigelow's desert four-o'clock	2	~25	RT
195	Nyc	Mirabilis laevis var. villosa	Bigelow's desert four-o'clock	1
196	Ole	Olea europaea	*olive	1		1
197	Ona	Camissonia campestris ssp. campestris	field suncup	1
198	Ona	Camissoniopsis bistorta	southern suncup	1
199	Ona	Camissoniopsis confusa	San Bernardino suncup	5
200	Ona	Camissoniopsis hirtella	field suncup	1
201	Ona	Camissoniopsis pallida ssp. hallii	Hall's suncup	2
202	Ona	Camissoniopsis pallida ssp. pallida	pale suncup	3	13	RT
203	Ona	Chylismia claviformis ssp. aurantiaca	brown-eyed primrose	8	58
204	Ona	Clarkia rhomboidea	diamond-petaled clarkia	1
205	Ona	Epilobium canum ssp. latifolium	mountain California-fuchsia	5		10
206	Ona	Epilobium ciliatum ssp. ciliatum	willowherb	1
207	Ona	Eulobus californicus	California suncup	5	5	99
208	Ona	Oenothera deltoides ssp. deltoides	dune primrose	2
209	Ona	Oenothera elata ssp. hirsutissima	Hooker's evening-primrose	5
210	Oro	Castilleja exserta ssp. exserta	purple owl's-clover	1
211	Oro	Castilleja foliolosa	woolly Indian paintbrush	4
212	Oro	Cordylanthus rigidus ssp. setiger	bristly bird's beak	1
213	Oro	Orobanche fasciculata	clustered broomrape	1
214	Pap	Argemone munita	prickly poppy	3
215	Pap	Dendromecon rigida	bush poppy	4
216	Pap	Ehrendorferia chrysantha	golden ear drops	3		1
217	Pap	Eschscholzia minutiflora	small-flowered poppy	1
218	Pap	Eschscholzia papastillii	cryptic desert poppy	1		~RT
219	Phr	Mimulus aurantiacus var. pubescens	hairy bush monkeyflower	3
220	Phr	Mimulus cardinalis	scarlet monkeyflower	2
221	Phr	Mimulus guttatus	common monkeyflower	6
222	Phr	Mimulus pilosus	false monkeyflower	2
223	Pla	Antirrhinum coulterianum	Coulter's snapdragon	2		5
224	Pla	Antirrhinum nuttallianum ssp. nuttallianum	purple snapdragon	1		5
225	Pla	Collinsia concolor	southern Chinese houses	3		~20
226	Pla	Keckiella antirrhinoides var. antirrhinoides	chaparral beardtongue	3		20
227	Pla	Penstemon centranthifolius	scarlet bugler	1
228	Pla	Penstemon clevelandii var. connatus	San Jacinto beardtongue	2
229	Pla	Plantago major	*common plantain	1
230	Pla	Plantago ovata	desert plantain	1
231	Pla	Plantago patagonica	Patagonia plantain	5
232	Pla	Platanus racemosa	western sycamore	9		10
233	Pol	Eriastrum diffusum	miniature woolly-star	1
234	Pol	Eriastrum eremicum ssp. eremicum	desert woolly-star	4		15
235	Pol	Gilia angelensis	angel's gilia	4
236	Pol	Gilia ochroleuca ssp. exilis	volcanic gilia	3
237	Pol	Gilia stellata	star gilia		40	spRT
238	Pol	Linanthus dianthiflorus	ground pink	6		RT
239	Pol	Linanthus maculatus ssp. maculatus	Little San Bernardino Mtns. gilia	1
240	Pol	Saltugilia australis	southern gilia	2		1
241	Pol	Chorizanthe brevicornu var. brevicornu	brittle spineflower	1		20
242	Pol	Chorizanthe xanti var. leucotheca	white-bracted spineflower	6
243	Pol	Eriogonum davidsonii	Davidson's buckwheat	1
244	Pol	Eriogonum elongatum var. elongatum	long-stemmed buckwheat	6		99
245	Pol	Eriogonum fasciculatum var. foliolosum	California buckwheat	4		x
246	Pol	Eriogonum fasciculatum var. polifolium	California buckwheat	6	75	99
247	Pol	Eriogonum gracile var. gracile	slender buckwheat	1
248	Pol	Eriogonum gracile var. incultum	slender buckwheat	1
249	Pol	Eriogonum pusillum	yellow-turbans	1
250	Pol	Eriogonum thurberi	Thurber's buckwheat	5
251	Pol	Eriogonum wrightii var. nodosum	Wright's buckwheat	6		10
252	Pol	Persicaria punctata	punctate smartweed	1
253	Pol	Polygonum aviculare ssp. depressum	*knotweed		55
254	Pol	Pterostegia drymarioides	fairy bowties, threadstem	4		RT
255	Pol	Rumex californicus	willow-leaved dock	1
256	Pol	Rumex hymenosepalus	wild rhubarb	4	50
257	Pol	Rumex violascens	Mexican dock	1
258	Ran	Aquilegia formosa	western columbine	3
259	Ran	Clematis pauciflora	virgin's bower	6		20
260	Ran	Delphinium parishii ssp. parishii	Parish's larkspur	4		~1
261	Ran	Delphinium parryi ssp. parryi	blue larkspur	1
262	Ran	Ranunculus californicus	California buttercup	1
263	Rha	Ceanothus leucodermis	chaparral whitethorn	7
264	Rha	Ceanothus oliganthus var. oliganthus	hairy ceanothus	1
265	Rha	Ceanothus perplexans	cupped-leaf ceanothus	7		5
266	Rha	Rhamnus ilicifolia	hollyleaf redberry			1
267	Rha	Ziziphus parryi var. parryi	lotebush	9		10
268	Ros	Adenostoma fasciculatum	chamise	4		40
269	Ros	Cercocarpus betuloides var. betuloides	birch-leaf mountain-mahogany	2
270	Ros	Prunus ilicifolia ssp. ilicifolia	hollyleaf cherry	7		30
271	Rub	Galium angustifolium ssp. angustifolium	narrowleaf bedstraw			10
272	Rub	Galium angustifolium ssp. gracillimum	slender bedstraw	4
273	Sal	Populus fremontii ssp. fremontii	Fremont cottonwood	5
274	Sal	Populus X parryi (P. trichocarpa X P. fremontii)	hybrid cottonwood	9
275	Sal	Salix exigua	narrowleaf willow	4
276	Sal	Salix laevigata	red willow	4
277	Sal	Salix lasiandra var. lasiandra	shining willow	1
278	Sax	Boykinia rotundifolia	round-leaved boykinia	2
279	Sax	Heuchera hirsutissima	shaggy-haired alumroot	1
280	Scr	Scrophularia californica	California bee plant	2
281	Sim	Ailanthus altissima	*tree-of-heaven	1
282	Sim	Simmondsia chinensis	jojoba	1		10
283	Sol	Datura wrightii	sacred datura	3	38	3
284	Sol	Lycium andersonii	Anderson's boxthorn	5	29	5
285	Sol	Lycium torreyi	Torrey's boxthorn	2
286	Sol	Nicotiana obtusifolia	desert tobacco	2		5
287	Sol	Physalis crassifolia	thick-leaved ground cherry	3		1
288	Sol	Solanum douglasii	white nightshade	2
289	Tam	Tamarix aphylla	*athel	1	86
290	Tam	Tamarix chinensis	*Chinese tamarisk	1
291	Ulm	Ulmus parvifolia	*Chinese elm	1
292	Urt	Parietaria hespera var. hespera	pellitory	2		RT
293	Ver	Verbena lasiostachys	western vervain	1
294	Vis	Phoradendron californicum	desert mistletoe	1		50
295	Vis	Phoradendron serotinum ssp. tomentosum	oak mistletoe	1
296	Vit	Vitis girdiana	wild grape	4
297	Zyg	Larrea tridentata	creosote bush	6	21	99
Monocots
298	Aga	Hesperoyucca whipplei	chaparral yucca	4		5
299	Cyp	Carex alma	sturdy sedge	4
300	Cyp	Carex fracta	fragile sheath sedge	3
301	Cyp	Carex sartwelliana	Yosemite sedge	1
302	Cyp	Carex schottii	Schott's sedge	3
303	Cyp	Carex senta	swamp sedge	2
304	Jun	Juncus balticus ssp. ater	wire rush	1
305	Jun	Juncus rugulosus	wrinkled rush	3
306	Jun	Juncus textilis	basket rush	2
307	Lil	Calochortus concolor	golden-bowl mariposa	3		~5
308	Orc	Epipactis gigantea	stream orchid	4
309	Poa	Aristida purpurea var. nealleyi	Nealley three-awn	3		1
310	Poa	Arundo donax	*giant reed	3
311	Poa	Avena barbata	*slender wild oats	2		RT
312	Poa	Bromus arizonicus	Arizona brome	5
313	Poa	Bromus berteroanus	Chilean chess	1
314	Poa	Bromus diandrus	*ripgut brome	1		99
315	Poa	Bromus madritensis ssp. rubens	*red brome	1		99
316	Poa	Bromus tectorum	*downy brome		83	RT
317	Poa	Cynodon dactylon	*Bermuda grass		~79
318	Poa	Echinochloa crus-galli	*barnyard grass	1
319	Poa	Festuca myuros	*rattail fescue	1
320	Poa	Festuca octoflora	six-weeks fescue	3
321	Poa	Hordeum murinum	*foxtail barley	1	30	RT
322	Poa	Melica frutescens	tall melica	2		3
323	Poa	Melica imperfecta	coast-range melic	2		1
324	Poa	Muhlenbergia californica	California muhly	4
325	Poa	Muhlenbergia microsperma	littleseed muhly	4		RT
326	Poa	Muhlenbergia rigens	deergrass	1		~RT
327	Poa	Panicum urvilleanum	desert panicgrass	6
328	Poa	Pennisetum setaceum	*fountain grass	2		99
329	Poa	Phragmites australis	common reed	1
330	Poa	Poa secunda ssp. secunda	one-sided bluegrass	2		5
331	Poa	Polypogon monspeliensis	*rabbits-foot grass	1
332	Poa	Schismus barbatus	*Mediterranean schismus	3	8	99
333	Poa	Setaria viridis	*green foxtail	1
334	Poa	Stipa coronata	giant needlegrass	2		3
335	Poa	Stipa hymenoides	Indian ricegrass	6	78
336	Poa	Stipa miliacea var. miliacea	*smilo grass	2
337	Poa	Stipa occidentalis var. pubescens	Elmer's needlegrass	1
338	Poa	Stipa speciosa	desert needlegrass	3		5
339	The	Dichelostemma capitatum	blue dicks	2	22	RT
340	The	Muilla maritima	muilla	1

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Plants of Southern California: Regional Floras

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Last update: 1 January 2018