Flora of May Valley Road Area, San Jacinto Mountains


Fig. 1. The May Valley Road area. The red dots are GPS points for plants from our surveys. This floral area also includes the Coldwater Creek area above SR243.

This checklist includes the Johnson Meadow area; the area along the May Valley Road; and the May Valley area, including the public area surrounding the Fleming Ranch. Only a small fraction of the area here has been surveyed or vouchered; every new survey trip has resulted in the addition of 15 to 30 species to the flora, indicating that this flora is far from complete.

This checklist was compiled from a voucher search of the Consortium of California Herbaria on 26 September 2019; and the following field surveys:

Fig. 2 shows where the vouchers were georeferenced, which is often just a guess from a vague locality on the voucher, especially older ones.

Fig. 2. Left: Map showing where vouchers were georeferenced. As an example of the errors involved in doing this, the most southwestern voucher, georeferenced on the south side of SR74, has a locality of "Meadows along Hwy 74 near Keen Camp", and is very unlikely to have been taken where it was georeferenced. Right: Map of the same area showing our GPS points where we have recorded species. Click on the pictures for larger versions.

See photographs of the plants here at iNat:

The Checklist

The following gives some basic information about this checklist.

See:

An asterisk before the common name indicates a non-native species.

The column labeled #Pls gives a minimum estimate of the number of plants, up to a maximum of 99 plants, from the field surveys in 2019. Those field surveys covered only a small fraction of this area, and only in the Fall and Winter, and so the numbers are very incomplete.

Version for printing, without the other text on this page: html (8 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)

#FamilScientific Name
Link goes to the Jepson eFlora
(*)Common Name
Link goes to Calphotos
#Pls
Lycopods
1IsoetIsoetes orcuttiiOrcutt's quillwort
Ferns
2DennsPteridium aquilinum var. pubescensbracken11
3DryopDryopteris argutaCalifornia wood fern1
4DryopPolystichum imbricans ssp. curtumcliff sword fern
5EquisEquisetum laevigatumsmooth scouring rush15
6MarsiMarsilea vestita ssp. vestitaclover fern
7PteriPellaea mucronata var. mucronatabird's-foot fern2
8PteriPentagramma triangularis ssp. triangularisgoldback fern1
9WoodsCystopteris fragilisbrittle bladder fern
Gymnosperms
10CupreCalocedrus decurrensincense-cedar20
11PinacAbies concolorwhite fir4
12PinacPinus coulteriCoulter pine99
13PinacPinus jeffreyiJeffrey pine99
14PinacPinus lambertianasugar pine10
15PinacPinus ponderosa var. pacificaponderosa pine3
16PinacPseudotsuga macrocarpabigcone-spruce
Eudicots
17AdoxaSambucus nigra ssp. caeruleablue elderberry80
18AnacaRhus aromaticabasketbush55
19AnacaRhus ovatasugar bush
20ApiacAngelica tomentosawoolly angelica1
21ApiacBowlesia incanahoary bowlesia
22ApiacTauschia argutasouthern tauschia30
23ApiacTauschia parishiiParish's tauschia5
24ApocyAsclepias eriocarpaIndian milkweed99
25AraliHydrocotyle ranunculoidesfloating marsh-pennywort
26AsterAchillea millefoliumyarrow99
27AsterAcourtia microcephalapurple head
28AsterAgoseris heterophyllaannual agoseris
29AsterAgoseris retrorsaspear-leaved mountain dandelion99
30AsterAmbrosia acanthicarpabur-ragweed20
31AsterAnisocoma acaulisscale-bud
32AsterArtemisia douglasianamugwort50
33AsterArtemisia dracunculuswild tarragon1
34AsterArtemisia ludoviciana ssp. incomptamountain mugwort99
35AsterArtemisia tridentatabig sagebrush8
36AsterChaenactis artemisiifoliameally white pincushion~40
37AsterChaenactis glabriuscula var. glabriusculayellow pincushion50
38AsterChaenactis parishiiParish's chaenactis
39AsterCirsium occidentale var. californicumCalifornia thistle20
40AsterCirsium scariosumelk thistle99
41AsterCirsium vulgare*bull thistle99
42AsterCorethrogyne filaginifoliaCalifornia-aster99
43AsterDeinandra mohavensisMojave tarplant99
44AsterEricameria nauseosa var. bernardinaSan Bernardino rubber rabbitbrush2
45AsterEricameria parishii var. parishiiParish's goldenbush55
46AsterEricameria pinifoliapine goldenbush35
47AsterErigeron canadensishorseweed99
48AsterErigeron foliosus var. foliosusleafy daisy99
49AsterEriophyllum confertiflorum var. confertiflorumgolden yarrow99
50AsterEriophyllum wallacei var. wallaceiWallace's woolly daisy99
51AsterGnaphalium palustrewestern marsh cudweed99
52AsterHelianthus californicusCalifornia sunflower
53AsterHeterotheca sessiliflorafalse goldenaster99
54AsterHulsea heterochromared-rayed hulsea3
55AsterHulsea vestita ssp. callicarphabeautiful hulsea99
56AsterLactuca serriola*prickly lettuce99
57AsterLayia glandulosawhite tidy-tips99
58AsterLayia platyglossacommon tidy-tips1
59AsterLessingia glandulifera var. glanduliferasticky lessingia99
60AsterMadia gracilisslender madia1
61AsterMalacothrix clevelandiiannual malacothrix
62AsterMatricaria discoidea*pineapple weed30
63AsterPentachaeta aureagolden daisy99
64AsterPseudognaphalium californicumCalifornia everlasting20
65AsterPseudognaphalium luteoalbum*common cudweed15
66AsterPseudognaphalium microcephalumwhite everlasting1
67AsterPseudognaphalium stramineumcotton-batting plant
68AsterPseudognaphalium thermaleslender everlasting99
69AsterSenecio flaccidus var. douglasiibush senecio
70AsterSolidago velutina ssp. californicagoldenrod99
71AsterSonchus asper ssp. asper*prickly sow thistle20
72AsterSonchus oleraceus*sow thistle5
73AsterStephanomeria exigua ssp. deaneislender wreathplant99
74AsterStephanomeria virgatatwiggy wreath plant99
75AsterSymphyotrichum ascendenslong-leaved aster99
76AsterTaraxacum erythrospermumred-seeded dandelion
77AsterTaraxacum officinale*common dandelion
78AsterTragopogon dubius*yellow salsify99
79AsterUropappus lindleyisilver puffs30
80AsterWyethia ovatasouthern mule's ears5
81BetulAlnus rhombifoliawhite alder
82BoragCryptantha intermedia var. intermediapopcorn flower99
83BoragCryptantha micrantha var. lepidamountain red-root cryptantha99
84BoragCryptantha microstachysTejon cryptantha
85BoragCryptantha muricataprickly cryptantha
86BoragCryptantha muricata var. jonesiiJones' prickly-nut cryptantha99
87BoragCryptantha nemacladaColusa cryptantha
88BoragEriodictyon crassifolium var. crassifoliumthick-leaved yerba santa11
89BoragEriodictyon parryipoodle-dog bush30
90BoragNemophila menziesiibaby blue eyes
91BoragPectocarya penicillatacombseed
92BoragPhacelia brachylobashort-lobed phacelia99
93BoragPhacelia distanscommon phacelia2
94BoragPhacelia imbricata var. patulaimbricate phacelia99
95BoragPhacelia minorwild canterbury bells35
96BoragPhacelia ramosissimabranching phacelia99
97BoragPlagiobothrys collinuspopcorn flower
98BoragPlagiobothrys collinus var. ursinusBear Valley popcorn flower
99BoragPlagiobothrys tenellusslender popcorn flower
100BrassBarbarea orthoceraswinter cress
101BrassBoechera californicaCalifornia elegant rock-cress13
102BrassDescurainia adenophorawhite tansy-mustard
103BrassHirschfeldia incana*shortpod mustard99
104BrassLepidium virginicum ssp. menziesiiwild pepper-grass99
105BrassNasturtium officinalewater cress99
106BrassRorippa curvisiliquacurvepod yellow-cress
107BrassSisymbrium altissimum*tumble-mustard99
108BrassThysanocarpus curvipesfringe-pod5
109BrassTurritis glabratower mustard5
110CactaOpuntia phaeacanthadesert prickly-pear
111CampaGithopsis diffusa ssp. candidawhite bluecup
112CampaHeterocodon rariflorumfew-flowered heterocodon
113CampaLobelia cardinalis var. pseudosplendenscardinal flower
114CampaNemacladus pinnatifiduscomb-leaved nemacladus30
115CampaNemacladus ramosissimusNuttall's nemacladus
116CampaNemacladus sigmoideussmall-flowered nemacladus1
117CampaTriodanis bifloraVenus looking-glass1
118CampaTriodanis perfoliataclasping Venus looking-glass
119CapriLonicera subspicata var. denudatasouthern honeysuckle99
120CaryoCerastium glomeratum*mouse-ear chickweed
121CaryoEremogone ferrisiaeFerris' sandwort
122CaryoMinuartia douglasiiDouglas' sandwort
123CaryoSilene antirrhinasnapdragon campion
124CaryoSilene verecundawhite catch-fly1
125CaryoSpergularia rubra*red sandspurry13
126ChenoAtriplex rosea*tumbling oracle1
127ChenoChenopodium atrovirensforest goosefoot99
128ChenoChenopodium fremontiiFremont's goosefoot99
129ChenoDysphania pumilio*clammy goosefoot65
130ConvoCalystegia occidentalis ssp. fulcratawestern morning-glory99
131ConvoCuscuta californica var. papillosapapillate dodder50
132ConvoCuscuta subinclusacanyon dodder1
133CrassCrassula connatapygmy-weed7
134CrassDudleya saxosa ssp. aloidesdesert dudleya5
135CucurMarah macrocarpawild-cucumber2
136DatisDatisca glomerataDurango root
137DipsaDipsacus fullonum*wild teasel
138ElatiElatine californicaCalifornia waterwort
139EricaArctostaphylos glandulosaEastwood manzanita99
140EricaArctostaphylos pringlei ssp. drupaceapink-bracted manzanita99
141EricaArctostaphylos pungensMexican manzanita99
142EuphoChamaesyce serpyllifolia ssp. serpyllifoliathyme-leafed spurge99
143EuphoEuphorbia luridawoodland spurge
144FabacAcmispon americanus var. americanusSpanish clover99
145FabacAcmispon argophyllus var. argophyllussouthern California silver-lotus
146FabacAcmispon glaber var. brevialatusshort-winged deerweed40
147FabacAcmispon heermannii var. heermanniisilky lotus99
148FabacAcmispon nevadensis var. nevadensisSierra Nevada lotus1
149FabacAcmispon strigosusstrigose lotus99
150FabacAstragalus douglasii var. parishiiParish' Jacumba milk-vetch99
151FabacHosackia crassifolia var. crassifoliabroad-leaved lotus4
152FabacHosackia oblongifolia var. oblongifoliastreambank lotus1
153FabacLathyrus vestitus var. alefeldiiSan Diego pea60
154FabacLupinus bicolordwarf lupine99
155FabacLupinus concinnus ssp. optatusshowy bajada lupine99
156FabacLupinus excubitus var. austromontanusmountain grape-soda lupine99
157FabacLupinus latifolius var. parishiiParish's lupine99
158FabacTrifolium microcephalumsmall-head field clover99
159FabacTrifolium obtusiflorumcreek clover99
160FabacTrifolium variegatumvariegated clover
161FabacTrifolium willdenoviitomcat clover99
162FabacTrifolium wormskioldiicows clover
163FagacQuercus chrysolepiscanyon live oak99
164FagacQuercus kelloggiiCalifornia black oak75
165FagacQuercus wislizeni var. frutescensinterior live oak99
166FagacQuercus Xmorehusoracle oak2
167GentiZeltnera venustacanchalagua2
168GeranErodium cicutarium*redstem filaree99
169GrossRibes nevadensemountain pink currant
170GrossRibes roezlii var. roezliiSierra gooseberry
171HyperHypericum scouleriScouler's St. Johnswort
172LamiaMentha spicata*spearmint
173LamiaMonardella breweri ssp. lanceolatamustang mint99
174LamiaSalvia columbariaechia10
175LamiaScutellaria bolanderi ssp. austromontanasouthern skullcap99
176LamiaScutellaria siphocampyloidescurve-flowered skullcap26
177LamiaStachys rigida var. quercetorumrigid hedge-nettle1
178LamiaStachys rigida var. rigidarigid hedge-nettle99
179LamiaTrichostema austromontanum ssp. austromontanumsouthern bluecurls27
180LamiaTrichostema parishiiParish's bluecurls
181LimnaLimnanthes alba ssp. parishiiParish's meadowfoam99
182LoasaMentzelia dispersascattered blazing star
183LoasaMentzelia montanamountain blazing star99
184MalvaSidalcea sparsifoliacheckerbloom99
185MontiCalyptridium monandrumsand cress99
186MontiClaytonia parviflora ssp. parvifloranarrow-leaved miner's lettuce1
187MontiClaytonia parviflora ssp. utahensisnarrow-leaved miner's lettuce
188MontiClaytonia parviflora ssp. viridisgreen miner's lettuce
189MontiClaytonia rubrared-stemmed spring beauty
190MontiMontia fontanawater chickweed
191OnagrCamissonia strigulosastrigose suncup99
192OnagrCamissoniopsis confusaSan Bernardino suncup99
193OnagrCamissoniopsis hirtellafield suncup99
194OnagrCamissoniopsis intermediaintermediate suncups
195OnagrClarkia purpurea ssp. quadrivulnerapurple clarkia99
196OnagrClarkia rhomboideadiamond-petaled clarkia99
197OnagrEpilobium brachycarpumautumn willowweed99
198OnagrEpilobium canum ssp. latifoliummountain California-fuchsia99
199OnagrEpilobium ciliatum ssp. ciliatumwillowherb99
200OnagrEpilobium densiflorumspike primrose99
201OnagrGayophytum oligospermumpinegrove groundsmoke99
202OnagrOenothera californica ssp. californicaCalifornia evening-primrose50
203OnagrOenothera elata ssp. hirsutissimaHooker's evening-primrose20
204OrobaCastilleja applegatei ssp. martiniiMartin's paintbrush4
205OrobaCastilleja attenuatavalley tassels
206OrobaCastilleja exserta ssp. exsertapurple owl's-clover~20
207OrobaCastilleja minor ssp. spiralislesser paintbrush99
208OrobaCordylanthus rigidus ssp. setigerbristly bird's beak99
209PapavDendromecon rigidabush poppy
210PapavEhrendorferia chrysanthagolden ear drops99
211PapavPlatystemon californicuscream cups10
212PhrymMimulus brevipeswide-throated yellow monkeyflower65
213PhrymMimulus cardinalisscarlet monkeyflower30
214PhrymMimulus diffususPalomar monkeyflower5
215PhrymMimulus floribundusfloriferous monkeyflower99
216PhrymMimulus fremontii var. fremontiiFremont's monkeyflower99
217PhrymMimulus guttatuscommon monkeyflower99
218PhrymMimulus latidensbroad-toothed monkeyflower
219PhrymMimulus longiflorus ssp. calycinushairy bush monkeyflower11
220PhrymMimulus parishiiParish's monkeyflower
221PhrymMimulus pilosusfalse monkeyflower99
222PlantAntirrhinum coulterianumCoulter's snapdragon99
223PlantCollinsia concolorsouthern Chinese houses99
224PlantKeckiella ternata var. ternatawhorledleaf penstemon25
225PlantPenstemon centranthifoliusscarlet bugler99
226PlantPenstemon rostriflorusbeaked penstemon2
227PlantPenstemon spectabilis var. spectabilisshowy penstemon99
228PlantPlantago lanceolata*English plantain99
229PlantPlantago patagonicaPatagonia plantain99
230PlantVeronica peregrina ssp. xalapensispurslane speedwell
231PolemAllophyllum divaricatumpurple false-gilia
232PolemAllophyllum gilioides ssp. violaceumdense false-gilia
233PolemAllophyllum glutinosumsticky false-gilia99
234PolemEriastrum densifolium ssp. austromontanumsouthern mountain woolly-star99
235PolemEriastrum sapphirinumsapphire woolly-star99
236PolemGilia capitata ssp. abrotanifoliaglobe gilia99
237PolemGilia diegensiscoastal gilia99
238PolemGilia ochroleuca ssp. exilisvolcanic gilia99
239PolemLeptosiphon ciliatuswhisker-brush99
240PolemLeptosiphon lemmoniiLemmon's linanthus99
241PolemLeptosiphon liniflorusflax-flowered linanthus99
242PolemLinanthus dianthiflorusground pink99
243PolemPhlox austromontanasouthern mountain phlox
244PolemSaltugilia splendens ssp. splendenssplendid gilia99
245PolygEriogonum apiculatumSan Jacinto buckwheat15
246PolygEriogonum davidsoniiDavidson's buckwheat20
247PolygEriogonum fasciculatum var. polifoliumCalifornia buckwheat99
248PolygEriogonum gracile var. gracileslender buckwheat40
249PolygEriogonum gracile var. incultumslender buckwheat99
250PolygEriogonum molestumpineland buckwheat
251PolygEriogonum nudum var. pauciflorumnaked buckwheat99
252PolygEriogonum wrightii var. membranaceumWright's buckwheat99
253PolygPolygonum aviculare ssp. depressum*knotweed99
254PolygRumex acetosella*common sheep sorrel60
255PolygRumex californicuswillow-leaved dock25
256PolygRumex conglomeratus*whorled dock
257PolygRumex crispus*curly dock40
258PolygSidotheca trilobatathree-lobed oxytheca99
259RanunAquilegia formosawestern columbine1
260RanunRanunculus aquatiliswater crowfoot
261RanunRanunculus californicusCalifornia buttercup3
262RanunRanunculus sceleratus var. sceleratuscursed crowfoot
263RanunThalictrum fendleri var. polycarpummeadow-rue
264RhamnCeanothus cuneatusbuck brush50
265RhamnCeanothus leucodermischaparral whitethorn99
266RhamnCeanothus palmeriPalmer's ceanothus
267RhamnCeanothus perplexanscupped-leaf ceanothus1?
268RhamnFrangula californica ssp. cuspidataSierra hoary coffeeberry50
269RhamnRhamnus ilicifoliahollyleaf redberry8
270RosacAdenostoma fasciculatumchamise99
271RosacAdenostoma sparsifoliumred shanks99
272RosacCercocarpus betuloides var. betuloidesbirch-leaf mountain-mahogany99
273RosacDrymocallis glandulosa var. viscidasticky cinquefoil20
274RosacHorkelia clevelandii var. clevelandiiCleveland's horkelia99
275RosacPotentilla gracilisnorthwest cinquefoil10
276RosacPotentilla gracilis var. elmeriElmer's cinquefoil
277RosacPrunus ilicifolia ssp. ilicifoliahollyleaf cherry10
278RosacRosa californicaCalifornia wild rose99
279RubiaGalium andrewsii ssp. andrewsiiphlox-leaved bedstraw
280RubiaGalium angustifolium ssp. angustifoliumnarrowleaf bedstraw50
281RubiaGalium angustifolium ssp. jacinticumSan Jacinto Mtns. bedstraw99
282RubiaGalium aparinecommon bedstraw10
283RubiaGalium porrigens var. porrigensgraceful bedstraw
284SalicPopulus fremontii ssp. fremontiiFremont cottonwood7
285SalicSalix gooddingiiblack willow2
286SalicSalix lasiolepisarroyo willow35
287SaxifLithophragma affinewoodland star2
288ScropLimosella acaulisstemless mudwort
289ScropScrophularia californicaCalifornia bee plant35
290SolanNicotiana attenuatacoyote tobacco99
291SolanSolanum parishiiParish's purple nightshade2
292TamarTamarix ramosissima*saltcedar9
293UrticUrtica dioica ssp. holosericeastinging nettle99
294ValerPlectritis ciliosalong-spurred plectritis20
295VerbeVerbena bracteatabracted verbena
296ViolaViola purpurea ssp. quercetorumgoosefoot yellow violet
297ViscaArceuthobium campylopodumpine dwarf-mistletoe99
298ViscaPhoradendron serotinum ssp. tomentosumoak mistletoe99
Monocots
299AgavaHesperoyucca whippleichaparral yucca2
300AlliaAllium lacunosum var. davisiaeDavis' pitted onion
301AlliaAllium marviniiYucaipa onion30
302AraceLemna minutaduckweed
303CyperCarex athrostachyaslender-beak sedge
304CyperCarex multicaulisforest sedge6
305CyperCarex sentaswamp sedge
306CyperCarex sp.Sedge3
307CyperEleocharis bellaneedle spikerush
308CyperEleocharis macrostachyacommon spikerush
309CyperEleocharis palustriscommon spikerush
310JuncaJuncus bufonius var. occidentaliswestern toad rush99
311JuncaJuncus dubiusMariposa rush40
312JuncaJuncus effusus ssp. austrocalifornicusSonoran rush2
313JuncaJuncus longistylislong-styled rush99
314JuncaJuncus mexicanusMexican rush99
315JuncaJuncus oxymerispointed rush99
316JuncaJuncus patenscommon rush
317JuncaJuncus tiehmiiTiehm's rush
318JuncaLuzula comosahairy wood rush
319LiliaCalochortus concolorgolden-bowl mariposa
320LiliaCalochortus palmeri var. munziiSan Jacinto mariposa lily99
321LiliaCalochortus splendenssplendid mariposa lily
322LiliaLilium parryilemon lily
323OrchiCorallorhiza maculataspotted coralroot
324PoaceAgrostis scabrarough bentgrass2
325PoaceAgrostis stolonifera*creeping bentgrass
326PoaceAvena barbata*slender wild oats~99
327PoaceBromus carinatusCalifornia brome99
328PoaceBromus diandrus*ripgut brome75
329PoaceBromus grandistall brome
330PoaceBromus hordeaceus*soft chess99
331PoaceBromus tectorum*downy brome99
332PoaceElymus elymoidessquirreltail35
333PoaceElymus glaucusblue wildrye25
334PoaceElymus hispidus*intermediate wheatgrass1
335PoaceElymus multisetusbig squirreltail
336PoaceElymus stebbinsiiStebbins' wildrye
337PoaceElymus triticoidescreeping wild rye99
338PoaceFestuca arundinacea*tall fescue
339PoaceFestuca microstachyssmall fescue15
340PoaceFestuca myuros*rattail fescue99
341PoaceHordeum brachyantherum ssp. californicumCalifornia meadow barley1
342PoaceHordeum marinum ssp. gussoneanum*Mediterranean barley
343PoaceHordeum murinum*foxtail barley1
344PoaceKoeleria macranthaJune grass99
345PoaceMelica imperfectacoast-range melic20
346PoaceMuhlenbergia rigensdeergrass99
347PoacePaspalum distichumknot grass
348PoacePoa compressa*Canada blue grass
349PoacePoa pratensis*Kentucky blue grass99
350PoacePoa secunda ssp. secundaone-sided bluegrass50
351PoacePolypogon monspeliensis*rabbits-foot grass50
352PoacePolypogon viridis*green bentgrass
353PotamPotamogeton foliosus ssp. foliosusleafy pondweed
354RuscaNolina parryiParry's nolina
355ThemiBloomeria croceagoldenstar99
356ThemiBrodiaea terrestris ssp. kernensisearth brodiaea99
357ThemiDichelostemma capitatum ssp. capitatumblue dicks99
358TyphaTypha latifoliabroadleaf cattail~4


Voucher data provided by the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).

We thank Keir Morse, Jordan Zylstra, and Deb Nelson for help with the 4 May 2013 fieldwork; Lance Woolley for help with the two bloom lists compiled by Bruce Watts, and David Harris for help with the 8 October 2019 survey.

Jordan Zylstra kindly informed us about his find of Castilleja attenuata in this area.


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Copyright © 2019 by Tom Chester (8), Don Rideout (4), Nancy Accola (3), Bruce Watts (2), and Dave Stith (1). The number in parentheses is the number of surveys done by each person.
Commercial rights reserved. Permission is granted to reproduce any or all of this page for individual or non-profit institutional internal use as long as credit is given to us at this source:
http://tchester.org/sj/flora/may_valley.html
Comments and feedback: Tom Chester
Last update: 31 October 2019