Flora of Lowermost Snow Creek Area, San Jacinto Mountains

Botanical Highlights
Species Checklist
Notes on Some Species


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:

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 NameCommon NameNotes
Astragalus lentiginosus var. coachellaeCoachella Valley milk-vetchThis is at the westernmost limit for this species, restricted to the Coachella Valley Area.
Bromus arizonicusArizona bromeThis is at the easternmost limit for this cismontane taxon in southern California.
Camissonia campestris ssp. campestrisfield suncupThis 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 corollataCoast Range cryptanthaThis is near the southernmost limit for this taxon, found only in the Temecula / Aguanga area and north.
Eriophyllum ambiguum var. paleaceumannual woolly sunflowerIn southern California, this taxon is found only in the Coachella Valley area and in southeasternmost San Diego County.
Eschscholzia papastilliicryptic desert poppyThis 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. maculatusLittle San Bernardino Mtns. giliaThis taxon grows only in the area near the western boundary of JTNP; this location is the southwesternmost limit of its range.
Lobelia cardinalis var. pseudosplendenscardinal flowerThis 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 torreyiTorrey's boxthornThis 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 californicaCalifornia muhlyThis is at the southernmost limit for the species, found mainly in the San Gabriel Mountains and San Bernardino Mountains.
Panicum urvilleanumdesert panicgrassThis 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-mortaeDeath Valley phaceliaWe 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 cottonwoodWe 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. simplicifoliusCalifornia indigo-bushThis widespread DMoj plant is close to its southernmost limit here, with mainly only a population in the Hemet area farther south.
Rumex violascensMexican dockThis 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:

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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#FamScientific Name
Link goes to the Jepson eflora
(*)Common Name
Link goes to Calphotos
1SelSelaginella bigeloviiBigelow's spike-moss3 99
2BleWoodwardia fimbriatagiant chain fern5  
3DenPteridium aquilinum var. pubescensbracken3  
4PteAdiantum capillus-venerismaidenhair fern1  
5PteCheilanthes covilleibeady lipfern9 20
6PteCheilanthes parryiwoolly lipfern1 1
7PteCheilanthes viscidasticky lipfern1  
8PtePellaea andromedifoliacoffee fern2 5
9PtePellaea mucronata var. mucronatabird's-foot fern5 5
10PtePentagramma triangularis ssp. maxoniiMaxon's silverback fern2 20
11EphEphedra californicadesert tea92730
12LauUmbellularia californicaCalifornia bay1  
13AmaAmaranthus albus*tumble pigweed1  
14AmaAmaranthus fimbriatusfringed amaranth2 RT
15AnaRhus ovatasugar bush6 20
16AnaSchinus molle*Peruvian pepper tree2  
17ApiBowlesia incanahoary bowlesia1  
18ApiTauschia argutasouthern tauschia3 1
19ApoFunastrum cynanchoides var. hartwegiiclimbing milkweed92099
20AstAcamptopappus sphaerocephalus var. sphaerocephalusgoldenhead6  
21AstAdenophyllum porophylloidesSan Felipe dogweed5 RT
22AstAmbrosia acanthicarpabur-ragweed2710
23AstAmbrosia dumosaburroweed7521
24AstAmbrosia salsola var. salsolacheesebush6150
25AstArtemisia californicaCalifornia sagebrush9 99
26AstArtemisia dracunculuswild tarragon1  
27AstArtemisia ludoviciana ssp. albulawhite mugwort6  
28AstArtemisia ludoviciana ssp. incomptamountain mugwort1  
29AstArtemisia ludoviciana ssp. ludovicianasilver wormwood1  
30AstBaccharis salicifolia ssp. salicifoliamule fat4  
31AstBaccharis sarothroidesbroom baccharis2  
32AstBaccharis sergiloidesdesert baccharis4 2
33AstBahiopsis parishiiParish's goldeneye9 99
34AstBebbia juncea var. asperasweetbush7 99
35AstBrickellia desertorumdesert brickellia9 15
36AstCalycoseris wrightiiwhite tackstem1  
37AstCentaurea melitensis*tocalote 34 
38AstChaenactis fremontiiFremont pincushion76RT
39AstCorethrogyne filaginifoliaCalifornia-aster7 99
40AstDicoria canescensdesert dicoria2441
41AstDimorphotheca sinuata*African daisy1  
42AstEncelia actoniActon encelia3 20
43AstEncelia farinosabrittlebush5299
44AstEricameria cuneata var. spathulatawide-leaved rock goldenbush  5
45AstEricameria linearifolianarrowleaf goldenbush3 15
46AstEricameria paniculatablackbanded rabbitbrush185 
47AstEricameria parishii var. parishiiParish's goldenbush3  
48AstEricameria pinifoliapine goldenbush1  
49AstErigeron canadensishorseweed2  
50AstErigeron foliosus var. foliosusleafy daisy4  
51AstEriophyllum ambiguum var. paleaceumannual woolly sunflower2  
52AstEriophyllum confertiflorum var. confertiflorumgolden yarrow4  
53AstEriophyllum wallaceiWallace's woolly daisy966 
54AstGeraea canescenshairy desert-sunflower ~54 
55AstGutierrezia californicaCalifornia matchweed4  
56AstGutierrezia sarothraematchweed  ~5
57AstHedypnois cretica*Crete weed1  
58AstHelianthus gracilentusslender sunflower3  
59AstHeterotheca grandifloratelegraph weed2  
60AstLasthenia coronariasouthern goldfields5sp15RT
61AstLayia platyglossacommon tidy-tips 67 
62AstLepidospartum squamatumscale-broom46120
63AstLeptosyne californicaCalifornia coreopsis1  
64AstLogfia depressadwarf filago3  
65AstLogfia filaginoidesCalifornia filago31750
66AstMalacothrix glabratadesert dandelion619RT
67AstPalafoxia arida var. aridaSpanish needle462 
68AstPseudognaphalium biolettiibicolored everlasting1 10
69AstPseudognaphalium luteoalbum*common cudweed1  
70AstPseudognaphalium microcephalumwhite everlasting1  
71AstRafinesquia californicaCalifornia chicory1 ~5
72AstRafinesquia neomexicanadesert chicory39RT
73AstSenecio vulgaris*common groundsel 57 
74AstSolidago velutina ssp. californicagoldenrod5  
75AstSonchus asper ssp. asper*prickly sow thistle1  
76AstSonchus oleraceus*sow thistle176RT
77AstStephanomeria exigua ssp. exiguaslender wreathplant9 3
78AstStephanomeria pauciflorawire-lettuce1713
79AstUropappus lindleyisilver puffs1  
80BetAlnus rhombifoliawhite alder7  
81BigChilopsis linearis ssp. arcuatadesert-willow7642
82BorAmsinckia intermediacommon fiddleneck5 1
83BorAmsinckia tessellata var. tessellatabristly fiddleneck2sp23 
84BorCryptantha barbigera var. fergusoniaeSanta Rosa Mountain bearded cryptantha624RT
85BorCryptantha circumscissa var. circumscissacushion cryptantha2  
86BorCryptantha corollataCoast Range cryptantha1  
87BorCryptantha intermedia var. intermediapopcorn flower1~81 
88BorCryptantha micrantha var. micranthared-root cryptantha1  
89BorCryptantha muricataprickly cryptantha3  
90BorCryptantha pterocarya var. purpusiiPurpus' wing-nut cryptantha2  
91BorEmmenanthe penduliflora var. penduliflorawhispering bells1~651
92BorEriodictyon crassifolium var. crassifoliumthick-leaved yerba santa93399
93BorEucrypta chrysanthemifolia var. bipinnatifidaeucrypta  1
94BorEucrypta chrysanthemifolia var. chrysanthemifoliaeucrypta2  
95BorNemophila menziesiibaby blue eyes260 
96BorPectocarya heterocarpachuckwalla pectocarya 46RT
97BorPectocarya linearis ssp. feroculaslender combseed2  
98BorPectocarya penicillatacombseed1  
99BorPhacelia brachylobashort-lobed phacelia1  
100BorPhacelia campanularia ssp. campanulariadesert bluebells2  
101BorPhacelia cicutaria var. hispidacaterpillar phacelia  RT
102BorPhacelia cryptanthalimestone phacelia1  
103BorPhacelia distanscommon phacelia4440
104BorPhacelia minorwild canterbury bells53740
105BorPhacelia ramosissimabranching phacelia4  
106BorPhacelia vallis-mortaeDeath Valley phacelia1  
107BorPholistoma membranaceumwhite fiesta flower3 RT
108BorPlagiobothrys arizonicusArizona popcorn flower4  
109BorTiquilia plicataplicate coldenia273 
110BraAthysanus pusillusdwarf athysanus1  
111BraBoechera perennansperennial rock-cress1  
112BraBrassica juncea*India mustard1  
113BraBrassica tournefortii*Sahara mustard9399
114BraCapsella bursa-pastoris*shepherd's purse151 
115BraDithyrea californicaspectacle-pod1  
116BraLepidium lasiocarpum ssp. lasiocarpumhairy-podded pepper-grass1 10
117BraSisymbrium altissimum*tumble-mustard1  
118BraSisymbrium irio*London rocket143RT
119BraStreptanthella longirostrislongbeak streptanthella1  
120BraThysanocarpus curvipes ssp. eradiatusfringe-pod4 ~RT
121CacCylindropuntia echinocarpasilver cholla21050
122CacOpuntia basilaris var. basilarisbeavertail cactus5 5
123CacOpuntia phaeacanthadesert prickly-pear  1
124CamLobelia cardinalis var. pseudosplendenscardinal flower5  
125CamNemacladus longiflorus var. breviflorusthread plant2  
126CarLoeflingia squarrosaspreading loeflingia4685
127CarStellaria media*common chickweed1  
128CheAtriplex canescens var. canescensfour-wing saltbush4821
129CheChenopodium berlandieripit-seed goosefoot1sp45 
130CheChenopodium murale*nettle-leaved goosefoot1  
131CheCycloloma atriplicifolium*winged pigweed1  
132CheDysphania ambrosioides*Mexican tea2  
133CheSalsola paulsenii*Paulsen's Russian thistle sp35 
134ClePeritoma arborea var. angustatadesert bladderpod 721
135ClePeritoma arborea var. arboreabladderpod1  
136ConCuscuta californicaCalifornia dodder sp32 
137CraCrassula connatapygmy-weed22650
138CraDudleya saxosa ssp. aloidesdesert dudleya4 30
139CroCrossosoma bigeloviirock crossosoma7  
140CucCucurbita foetidissimastinking gourd1  
141CucMarah macrocarpawild-cucumber5 2
142EupChamaesyce micromeraSonoran spurge2  
143EupChamaesyce polycarpasmall-seeded spurge41640
144EupCroton californicusCalifornia croton9595
145EupRicinus communis*castor bean1  
146EupStillingia linearifolialinear-leaved stillingia66920
147FabAcmispon argophyllus var. argophyllussouthern California silver-lotus1  
148FabAcmispon glaber var. brevialatusshort-winged deerweed97099
149FabAcmispon grandiflorus var. grandifloruschaparral lotus1  
150FabAcmispon micranthusSan Diego birdsfoot lotus2  
151FabAcmispon strigosusstrigose lotus611RT
152FabAstragalus douglasiiJacumba milk-vetch1  
153FabAstragalus lentiginosus var. coachellaeCoachella Valley milk-vetch9  
154FabHoita macrostachyaleather root3  
155FabHosackia oblongifolia var. oblongifoliastreambank lotus1  
156FabLupinus bicolordwarf lupine4  
157FabLupinus concinnusbajada lupine3  
158FabLupinus hirsutissimusstinging lupine484 
159FabLupinus sparsiflorusCoulter's lupine9~18RT
160FabLupinus truncatuscollar lupine5  
161FabMedicago minima*burclover1  
162FabParkinsonia aculeata*Mexican palo verde  1
163FabPsorothamnus arborescens var. simplicifoliusCalifornia indigo-bush5 3
164FabPsorothamnus emoryiEmory's indigo-bush 28RT
165FabPsorothamnus schottiiindigo bush1  
166FabRobinia pseudoacacia*black locust1  
167FabSenegalia greggiicatclaw31299
168FagQuercus agrifoliacoast live oak1~63 
169FagQuercus wislizeni var. frutescensinterior live oak9 5
170GenFrasera neglectapine green-gentian1  
171GerErodium botrys*long-beaked filaree1  
172GerErodium cicutarium*redstem filaree414RT
173GroRibes indecorumwhite-flowering currant2 2
174GroRibes malvaceum var. viridifoliumchaparral currant1  
175KraKrameria bicolorwhite rhatany4412
176LamLamium amplexicaule*henbit1  
177LamSalvia apianawhite sage8 2
178LamSalvia columbariaechia3 10
179LoaMentzelia involucratabracted blazing star1  
180LoaPetalonyx thurberi ssp. thurberiThurber's sandpaper-plant174 
181MalEremalche exiliswhite mallow 47 
182MalFremontodendron californicumCalifornia fremontia2  
183MalMalacothamnus fasciculatuschaparral bush mallow3315
184MalMalva parviflora*cheeseweed ~53 
185MalSphaeralcea ambiguaapricot mallow2 ssp10
186MonCalandrinia ciliatared maids248 
187MonCalyptridium monandrumsand cress2 RT
188MonClaytonia parviflora ssp. parvifloranarrow-leaved miner's lettuce1  
189MonClaytonia perfoliata ssp. perfoliataminer's lettuce1  
190MyrEucalyptus camaldulensis*Red River gum1  
191NycAbronia villosa var. villosahairy sand-verbena642 
192NycBoerhavia coccineascarlet spiderling1  
193NycMirabilis laevis var. crassifoliaCalifornia four o'clock1  
194NycMirabilis laevis var. retrorsaBigelow's desert four-o'clock2~25RT
195NycMirabilis laevis var. villosaBigelow's desert four-o'clock1  
196OleOlea europaea*olive1 1
197OnaCamissonia campestris ssp. campestrisfield suncup1  
198OnaCamissoniopsis bistortasouthern suncup1  
199OnaCamissoniopsis confusaSan Bernardino suncup5  
200OnaCamissoniopsis hirtellafield suncup1  
201OnaCamissoniopsis pallida ssp. halliiHall's suncup2  
202OnaCamissoniopsis pallida ssp. pallidapale suncup313RT
203OnaChylismia claviformis ssp. aurantiacabrown-eyed primrose858 
204OnaClarkia rhomboideadiamond-petaled clarkia1  
205OnaEpilobium canum ssp. latifoliummountain California-fuchsia5 10
206OnaEpilobium ciliatum ssp. ciliatumwillowherb1  
207OnaEulobus californicusCalifornia suncup5599
208OnaOenothera deltoides ssp. deltoidesdune primrose2  
209OnaOenothera elata ssp. hirsutissimaHooker's evening-primrose5  
210OroCastilleja exserta ssp. exsertapurple owl's-clover1  
211OroCastilleja foliolosawoolly Indian paintbrush4  
212OroCordylanthus rigidus ssp. setigerbristly bird's beak1  
213OroOrobanche fasciculataclustered broomrape1  
214PapArgemone munitaprickly poppy3  
215PapDendromecon rigidabush poppy4  
216PapEhrendorferia chrysanthagolden ear drops3 1
217PapEschscholzia minutiflorasmall-flowered poppy1  
218PapEschscholzia papastilliicryptic desert poppy1 ~RT
219PhrMimulus aurantiacus var. pubescenshairy bush monkeyflower3  
220PhrMimulus cardinalisscarlet monkeyflower2  
221PhrMimulus guttatuscommon monkeyflower6  
222PhrMimulus pilosusfalse monkeyflower2  
223PlaAntirrhinum coulterianumCoulter's snapdragon2 5
224PlaAntirrhinum nuttallianum ssp. nuttallianumpurple snapdragon1 5
225PlaCollinsia concolorsouthern Chinese houses3 ~20
226PlaKeckiella antirrhinoides var. antirrhinoideschaparral beardtongue3 20
227PlaPenstemon centranthifoliusscarlet bugler1  
228PlaPenstemon clevelandii var. connatusSan Jacinto beardtongue2  
229PlaPlantago major*common plantain1  
230PlaPlantago ovatadesert plantain1  
231PlaPlantago patagonicaPatagonia plantain5  
232PlaPlatanus racemosawestern sycamore9 10
233PolEriastrum diffusumminiature woolly-star1  
234PolEriastrum eremicum ssp. eremicumdesert woolly-star4 15
235PolGilia angelensisangel's gilia4  
236PolGilia ochroleuca ssp. exilisvolcanic gilia3  
237PolGilia stellatastar gilia 40spRT
238PolLinanthus dianthiflorusground pink6 RT
239PolLinanthus maculatus ssp. maculatusLittle San Bernardino Mtns. gilia1  
240PolSaltugilia australissouthern gilia2 1
241PolChorizanthe brevicornu var. brevicornubrittle spineflower1 20
242PolChorizanthe xanti var. leucothecawhite-bracted spineflower6  
243PolEriogonum davidsoniiDavidson's buckwheat1  
244PolEriogonum elongatum var. elongatumlong-stemmed buckwheat6 99
245PolEriogonum fasciculatum var. foliolosumCalifornia buckwheat4 x
246PolEriogonum fasciculatum var. polifoliumCalifornia buckwheat67599
247PolEriogonum gracile var. gracileslender buckwheat1  
248PolEriogonum gracile var. incultumslender buckwheat1  
249PolEriogonum pusillumyellow-turbans1  
250PolEriogonum thurberiThurber's buckwheat5  
251PolEriogonum wrightii var. nodosumWright's buckwheat6 10
252PolPersicaria punctatapunctate smartweed1  
253PolPolygonum aviculare ssp. depressum*knotweed 55 
254PolPterostegia drymarioidesfairy bowties, threadstem4 RT
255PolRumex californicuswillow-leaved dock1  
256PolRumex hymenosepaluswild rhubarb450 
257PolRumex violascensMexican dock1  
258RanAquilegia formosawestern columbine3  
259RanClematis paucifloravirgin's bower6 20
260RanDelphinium parishii ssp. parishiiParish's larkspur4 ~1
261RanDelphinium parryi ssp. parryiblue larkspur1  
262RanRanunculus californicusCalifornia buttercup1  
263RhaCeanothus leucodermischaparral whitethorn7  
264RhaCeanothus oliganthus var. oliganthushairy ceanothus1  
265RhaCeanothus perplexanscupped-leaf ceanothus7 5
266RhaRhamnus ilicifoliahollyleaf redberry  1
267RhaZiziphus parryi var. parryilotebush9 10
268RosAdenostoma fasciculatumchamise4 40
269RosCercocarpus betuloides var. betuloidesbirch-leaf mountain-mahogany2  
270RosPrunus ilicifolia ssp. ilicifoliahollyleaf cherry7 30
271RubGalium angustifolium ssp. angustifoliumnarrowleaf bedstraw  10
272RubGalium angustifolium ssp. gracillimumslender bedstraw4  
273SalPopulus fremontii ssp. fremontiiFremont cottonwood5  
274SalPopulus X parryi (P. trichocarpa X P. fremontii)hybrid cottonwood9  
275SalSalix exiguanarrowleaf willow4  
276SalSalix laevigatared willow4  
277SalSalix lasiandra var. lasiandrashining willow1  
278SaxBoykinia rotundifoliaround-leaved boykinia2  
279SaxHeuchera hirsutissimashaggy-haired alumroot1  
280ScrScrophularia californicaCalifornia bee plant2  
281SimAilanthus altissima*tree-of-heaven1  
282SimSimmondsia chinensisjojoba1 10
283SolDatura wrightiisacred datura3383
284SolLycium andersoniiAnderson's boxthorn5295
285SolLycium torreyiTorrey's boxthorn2  
286SolNicotiana obtusifoliadesert tobacco2 5
287SolPhysalis crassifoliathick-leaved ground cherry3 1
288SolSolanum douglasiiwhite nightshade2  
289TamTamarix aphylla*athel186 
290TamTamarix chinensis*Chinese tamarisk1  
291UlmUlmus parvifolia*Chinese elm1  
292UrtParietaria hespera var. hesperapellitory2 RT
293VerVerbena lasiostachyswestern vervain1  
294VisPhoradendron californicumdesert mistletoe1 50
295VisPhoradendron serotinum ssp. tomentosumoak mistletoe1  
296VitVitis girdianawild grape4  
297ZygLarrea tridentatacreosote bush62199
298AgaHesperoyucca whippleichaparral yucca4 5
299CypCarex almasturdy sedge4  
300CypCarex fractafragile sheath sedge3  
301CypCarex sartwellianaYosemite sedge1  
302CypCarex schottiiSchott's sedge3  
303CypCarex sentaswamp sedge2  
304JunJuncus balticus ssp. aterwire rush1  
305JunJuncus rugulosuswrinkled rush3  
306JunJuncus textilisbasket rush2  
307LilCalochortus concolorgolden-bowl mariposa3 ~5
308OrcEpipactis giganteastream orchid4  
309PoaAristida purpurea var. nealleyiNealley three-awn3 1
310PoaArundo donax*giant reed3  
311PoaAvena barbata*slender wild oats2 RT
312PoaBromus arizonicusArizona brome5  
313PoaBromus berteroanusChilean chess1  
314PoaBromus diandrus*ripgut brome1 99
315PoaBromus madritensis ssp. rubens*red brome1 99
316PoaBromus tectorum*downy brome 83RT
317PoaCynodon dactylon*Bermuda grass ~79 
318PoaEchinochloa crus-galli*barnyard grass1  
319PoaFestuca myuros*rattail fescue1  
320PoaFestuca octoflorasix-weeks fescue3  
321PoaHordeum murinum*foxtail barley130RT
322PoaMelica frutescenstall melica2 3
323PoaMelica imperfectacoast-range melic2 1
324PoaMuhlenbergia californicaCalifornia muhly4  
325PoaMuhlenbergia microspermalittleseed muhly4 RT
326PoaMuhlenbergia rigensdeergrass1 ~RT
327PoaPanicum urvilleanumdesert panicgrass6  
328PoaPennisetum setaceum*fountain grass2 99
329PoaPhragmites australiscommon reed1  
330PoaPoa secunda ssp. secundaone-sided bluegrass2 5
331PoaPolypogon monspeliensis*rabbits-foot grass1  
332PoaSchismus barbatus*Mediterranean schismus3899
333PoaSetaria viridis*green foxtail1  
334PoaStipa coronatagiant needlegrass2 3
335PoaStipa hymenoidesIndian ricegrass678 
336PoaStipa miliacea var. miliacea*smilo grass2  
337PoaStipa occidentalis var. pubescensElmer's needlegrass1  
338PoaStipa speciosadesert needlegrass3 5
339TheDichelostemma capitatumblue dicks222RT
340TheMuilla maritimamuilla1  

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.

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Copyright © 2017-2018 by Tom Chester, RT and Shaun Hawke, Keir Morse, Walt Fidler, Tracy Albrecht and Eileen Berbeo.
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Last update: 1 January 2018