Fig. 1. Photograph of Palm Canyon, 16 November 2010

Flora of Palm, Andreas, Murray and Tahquitz Canyons below 3000 Feet Elevation, San Jacinto Mountains

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Fig. 2. Photograph of Tahquitz Falls, 16 November 2010

Table of Contents Introduction Location Procedure For Compiling The Checklist Important Caveats Checklist Taxa Rejected From The Checklist

Fig. 3. Photograph of Tahquitz Falls, 6 April 2011

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Introduction

The Indian Canyons west of Palm Springs have always been a magnet for botanists, as well as tourists. Samuel Parish collected the first voucher in 1881, in Andreas Canyon, of a rare hybrid between Cheilanthes parryi and C. covillei, called C. X parishii in his honor. Since then, over 100 different botanists have collected a total of 1,156 vouchers from this area.

The main attraction of this area is that it is a desert area with water - lots of water. The steep eastern face of the San Jacinto Mountains, with a drop of over 10,500 feet in elevation in only 7.2 miles linear distance, from the 11,040 foot San Jacinto Peak to the 500 foot mouth of Tahquitz Canyon. There is essentially no place for this water to be used or absorbed by the plants or geology, and it all comes tumbling down to this area.

The resulting palm oases are a lure for desert denizens in the summer, offering shade as well as water. As can be seen from Fig. 1, Palm Canyon has a lot of palms.

But most interesting of all to botanists is that this is a fascinating transition between the vegetation of the coastal side of the mountains and the true desert to the east. It was almost mind-boggling to us to repeatedly come across coastal plants growing right next to desert plants.

This page is just a beginning of the flora of this area, since despite the large number of vouchers from this area, they all come from a very small portion of it. The two surveys we have done hardly even scratch the surface of the diversity here.

Yet even with the current incompleteness of the plant list here, this area is one of the more diverse areas for native plants in southern California, with 26% more species than is predicted from the best fit to the species - area relation for various places in southern California. This is a direct result of having abundant water, and by the mix of coastal, desert transition, and desert species.

There is much more work to be done on this flora, and much more fun to be had.

Unfortunately, the flora of this area also contains a brand-new-to-southern California, very-invasive annual grass that has taken over large areas on the open alluvial plain areas here, Stipa capensis, spear needlegrass (aka "cape needlegrass", "Mediterranean steppegrass", "twisted-awned speargrass", and "cape ricegrass"). This grass has even colonized areas along Tahquitz Creek. See Kate's 360° video panorama showing how extensively this grass has taken over here in places (click on the photo to begin the movie).

If you botanize here, make sure you remove all the seeds of this grass from your socks, shoes and pants before going elsewhere! Remember, the Coachella Valley is the same place that brought us the horrible scourge of Saharan Mustard, Brassica tournefortii. Don't help another invader spread!

Location

The following map shows the location of the lower elevations of Palm, Andreas, Murray and Tahquitz Canyons, with georeferenced voucher locations marked with blue diamonds:

Fig. 4. Topographic map showing location of the lower elevations of Palm, Andreas, Murray and Tahquitz Canyons, with georeferenced voucher locations marked with blue diamonds.

Procedure For Compiling The Checklist

The Checklist was compiled by the first author from online vouchers; from field work done on 16 November 2010 by the first two authors; and from field work done on 6 April 2011 by all the authors.

Voucher Records

The vouchers were obtained from five separate searches of the Consortium of California Herbaria on 18 November 2010:

• Georeferenced vouchers were searched between 33.75° and 33.82° N. latitude, and -116.52 and -116.58 E. longitude.

• Additional searches were made for all vouchers (not just georeferenced vouchers) that had the words Andreas Canyon, Palm Canyon, Murray Canyon or Tahquitz Palm in their locality field.

Duplicate vouchers were removed. The locality of each voucher was examined to rule out vouchers above 3000 feet elevation, vouchers that were out of this area, or vouchers from the urban area of Palm Springs.

Coordinates of the vouchers were then examined, and a few vouchers were removed that were outside this area.

The species list from the vouchers was then culled to remove species names that probably do not exist here, either because the location was not precise enough to be sure that the voucher was taken from the targeted area, or because the species determination on the voucher was unlikely to be correct. The rejected species are detailed below.

The online voucher determination of Gilia caruifolia was changed to G. stellata in the voucher list below, since that is the latest determination given on the voucher sheet. See Gilias of Lowermost Tahquitz Canyon.

Vouchers determined only to the species level were removed, and vouchers of a species and its subspecies were combined when there was only one plausible subspecies.

The above procedure resulted in a total of 349 taxa from 1,145 vouchers.

The dominant collectors, those with over 30 vouchers, are given in Table 1.

Table 1. Dominant Voucher Collectors

# Vouchers	% of Total	Name
175	15%	F. W. Peirson
166	14%	I. M. Johnston
120	10%	N. R. Zabriskie, W. M. Zabriskie
79	7%	W. L. Jepson (most with H. M. Hall)
60	5%	N. C. Cooper
51	4%	A. C. Sanders (most with G. K. Helmkamp)
43	4%	P. A. Munz
40	3%	F. M. Reed
31	3%	Mary F. Spencer

Field Surveys

Fig. 5. Topographic map showing locations of field surveys. The two trails in red were surveyed in detail on 6 April 2011; Tahquitz Canyon is the northernmost trail, with the southernmost trail from the mouth of Andreas Canyon to the mouth of Murray Canyon. The trail in yellow was part of an additional cursory survey on 16 November 2010 in Palm Canyon proper. See Fig. 4 for a map of a larger area containing these surveys.

The field work on 16 November 2010 by the first two authors was very cursory, and done primarily when hiking, not botanizing. Taxa were noted mostly from memory several days later. Due to the time of year, most of the noted taxa were shrubs. Nonetheless, a total of 71 taxa were noted, including 21 taxa that are not present in the voucher list. The field work on 6 April 2011 was done by all the authors. A comprehensive survey was done from the southern end of the parking area at Andreas Canyon to the lowermost portion of Murray Canyon, followed by a more cursory survey of Tahquitz Canyon along the trail from the parking lot to the waterfall. Estimates of the plant abundances for the entire survey area were made only in the next several days after the trip, so the estimates are probably low for a number of species. This survey found an amazing 171 taxa, including 37 taxa not present in the voucher list. Of those 37 taxa, 24 were species not seen in the 16 November 2010 survey, and were thus new additions to the Checklist.

Total Checklist

The total checklist below contains 396 taxa. Of those, 216 were present only from vouchers; 130 were present both in our surveys and in vouchers; and 50 species were only found in our surveys. The dominance of taxa found only in vouchers fits expectations since we have surveyed only a miniscule portion of the area covered by vouchers. However, finding that 27% of the taxa in our surveys were not on the voucher list was unexpected, since it had seemed to us, from the number of vouchers, that this area had been heavily botanized in the past.

Important Caveats

Please note the following important caveats about this preliminary Checklist:

• We have not looked at any of the vouchers yet, so we cannot vouch for their determinations. We have checked only the names of the taxa to make sure it was not unreasonable for them to occur here.

• The voucher taxon list is a very preliminary first draft, compiled quickly and without review by other knowledgeable botanists, and so well may contain bonehead errors.

• A few of the species from our surveys were not fully identified, usually due to lack of flowers. Those uncertain determinations are noted in the Checklist.

Plant Checklist

The Checklist is sorted first by category - ferns, dicots, and monocots - and then by family and scientific name. The Family and Scientific Name are from the Jepson Manual. An asterisk before the Common Name would indicate a non-native taxon, but all of the taxa found so far here are native.

The column #Pls gives the minimum number of plants found in the 6 April 2011 survey of Tahquitz Canyon from the parking lot to the waterfall, and from the southern end of the parking area at Andreas Canyon to the lowermost portion of Murray Canyon. Many species are undoubtedly more abundant than are indicated by our minimum numbers, both due to our limitations in remembering how many plants of each species we saw for sure, and because surveys at other times of year might find more plants. The maximum number of plants estimated is 99.

A "~" in front of the number indicates that the taxon was not fully identified, usually due to lack of flowers, and hence our determination may not be correct. For Adiantum capillus-veneris, the uncertainty is because the plants are inaccessible on the rock cliffs of Tahquitz Waterfall, and were only seen from a distance.

Additional species seen in Tahquitz Canyon on 16 November 2010 are marked with a T in this column. Additional taxa noted on 16 November 2010 in Palm Canyon immediately above the Trading Post, and at the mouth of Andreas Canyon, that are not on the voucher checklist, are marked with an X in this column.

The third column (#V) gives the number of vouchers for this entire area for each taxon.

See also the list of rejected species given below.

This is a working list, about which we make no guarantees at all until we officially release it. Use at your own risk!

Version for printing, without lines and other text on this page: html (12 pages) or pdf Clickbook booklet (3 double-sided pages). (See printing instructions for an explanation of these options)

#	JM Family	Scientific Name	(*)Common Name	#Pls	#V
1	Blechnaceae	Woodwardia fimbriata	giant chain fern		3
2	Equisetaceae	Equisetum laevigatum	smooth scouring rush		2
3	Pteridaceae	Adiantum capillus-veneris	maidenhair fern	~5	8
4	Pteridaceae	Cheilanthes covillei	beady lipfern		9
5	Pteridaceae	Cheilanthes covillei X C. parryi	teensy lipfern		2
6	Pteridaceae	Cheilanthes parryi	woolly lipfern	30	27
7	Pteridaceae	Cheilanthes viscida	sticky lipfern		9
8	Pteridaceae	Notholaena californica	California cloak fern	30	16
9	Pteridaceae	Pellaea andromedifolia	coffee fern		4
10	Pteridaceae	Pellaea mucronata var. mucronata	bird's-foot fern		5
11	Pteridaceae	Pentagramma triangularis ssp. maxonii	Maxon's silverback fern	10	9
12	Selaginellaceae	Selaginella bigelovii	Bigelow's spike-moss	1	7
13	Selaginellaceae	Selaginella eremophila	desert spike-moss	3	13
14	Thelypteridaceae	Thelypteris puberula var. sonorensis	Sonoran maiden fern		2
15	Cupressaceae	Juniperus californica	California juniper		4
16	Ephedraceae	Ephedra aspera	Mormon tea	~5	4
17	Ephedraceae	Ephedra californica	desert tea	2
18	Ephedraceae	Ephedra nevadensis	Nevada ephedra		1
19	Ephedraceae	Ephedra viridis	green ephedra		1
20	Acanthaceae	Justicia californica	chuparosa	99	11
21	Aceraceae	Acer macrophyllum	bigleaf maple		1
22	Anacardiaceae	Rhus lancea	*African Sumac		5
23	Anacardiaceae	Rhus ovata	sugar bush		2
24	Apiaceae	Daucus pusillus	rattlesnake weed		1
25	Apiaceae	Tauschia arguta	southern tauschia		1
26	Asclepiadaceae	Sarcostemma cynanchoides ssp. hartwegii	climbing milkweed	30	6
27	Asclepiadaceae	Sarcostemma hirtellum	rambling milkweed		3
28	Asteraceae	Acamptopappus sphaerocephalus var. sphaerocephalus	goldenhead		3
29	Asteraceae	Adenophyllum porophylloides	San Felipe dogweed	10	5
30	Asteraceae	Ambrosia dumosa	burroweed	50	8
31	Asteraceae	Ambrosia psilostachya	western ragweed	20	1
32	Asteraceae	Anthemis cotula	*dog-fennel		1
33	Asteraceae	Artemisia californica	California sagebrush		2
34	Asteraceae	Artemisia ludoviciana ssp. albula	white mugwort		1
35	Asteraceae	Artemisia ludoviciana ssp. incompta	mountain mugwort	2
36	Asteraceae	Aster pauciflorus	marsh alkali aster		1
37	Asteraceae	Baccharis salicifolia	mule fat	T	6
38	Asteraceae	Baccharis sergiloides	desert baccharis	30	2
39	Asteraceae	Baileya pauciradiata	Colorado Desert marigold		1
40	Asteraceae	Bebbia juncea var. aspera	sweetbush	30	6
41	Asteraceae	Brickellia arguta	California spear-leaved brickellia		1
42	Asteraceae	Brickellia californica	California brickellbush		1
43	Asteraceae	Brickellia desertorum	desert brickellia		3
44	Asteraceae	Centaurea melitensis	*tocalote		1
45	Asteraceae	Chaenactis carphoclinia var. carphoclinia	pebble pincushion		1
46	Asteraceae	Chaenactis fremontii	Fremont pincushion	99	5
47	Asteraceae	Conyza canadensis	horseweed	~5
48	Asteraceae	Encelia farinosa	brittlebush	99	7
49	Asteraceae	Ericameria linearifolia	narrowleaf goldenbush		1
50	Asteraceae	Erigeron divergens	spreading fleabane		1
51	Asteraceae	Eriophyllum ambiguum var. paleaceum	annual woolly sunflower		6
52	Asteraceae	Filago arizonica	Arizona herba impia		1
53	Asteraceae	Filago californica	California filago	50	4
54	Asteraceae	Gnaphalium bicolor	bicolored everlasting	10	2
55	Asteraceae	Gnaphalium californicum	California everlasting		1
56	Asteraceae	Gnaphalium luteo-album	*common cudweed	1	1
57	Asteraceae	Gutierrezia californica	California matchweed	1	4
58	Asteraceae	Gutierrezia sarothrae	matchweed		3
59	Asteraceae	Helianthus annuus	annual sunflower	~20
60	Asteraceae	Helianthus niveus ssp. canescens	gray desert sunflower		1
61	Asteraceae	Hymenoclea monogyra	leafy burrobrush		1
62	Asteraceae	Hymenoclea salsola var. salsola	cheesebush	40	8
63	Asteraceae	Isocoma acradenia var. eremophila	solitary-leaved alkali goldenbush	10	2
64	Asteraceae	Lactuca serriola	*prickly lettuce	T
65	Asteraceae	Lasthenia californica	goldfields		1
66	Asteraceae	Lasthenia microglossa	small-rayed goldfields		1
67	Asteraceae	Lepidospartum squamatum	scale-broom		1
68	Asteraceae	Malacothrix glabrata	desert dandelion	5	3
69	Asteraceae	Malacothrix stebbinsii	Stebbins' malacothrix		1
70	Asteraceae	Monoptilon bellioides	desert star		6
71	Asteraceae	Palafoxia arida var. arida	desert needle		4
72	Asteraceae	Perityle emoryi	Emory's rock-daisy	99	10
73	Asteraceae	Peucephyllum schottii	pygmy-cedar		5
74	Asteraceae	Pleurocoronis pluriseta	arrow-leaf	10	10
75	Asteraceae	Pluchea sericea	arrow-weed	5	6
76	Asteraceae	Porophyllum gracile	odora		1
77	Asteraceae	Pulicaria paludosa	*Spanish false-fleabane	T	1
78	Asteraceae	Rafinesquia californica	California chicory	10	1
79	Asteraceae	Rafinesquia neomexicana	desert chicory	10	1
80	Asteraceae	Senecio mohavensis	Mojave ragwort		1
81	Asteraceae	Solidago californica	goldenrod	20
82	Asteraceae	Sonchus oleraceus	*sow thistle	5
83	Asteraceae	Stephanomeria pauciflora var. pauciflora	wire-lettuce	5	4
84	Asteraceae	Stylocline gnaphaloides	everlasting nest-straw	99	1
85	Asteraceae	Stylocline psilocarphoides	Peck's stylocline	10	1
86	Asteraceae	Trichoptilium incisum	yellow-head		5
87	Asteraceae	Trixis californica var. californica	California trixis	10	14
88	Asteraceae	Uropappus lindleyi	silver puffs	5	1
89	Asteraceae	Viguiera parishii	Parish's viguiera	10	11
90	Asteraceae	Xanthium strumarium	cocklebur	20
91	Betulaceae	Alnus rhombifolia	white alder		5
92	Bignoniaceae	Chilopsis linearis ssp. arcuata	desert-willow	1	9
93	Boraginaceae	Amsinckia menziesii var. intermedia	common fiddleneck	99	2
94	Boraginaceae	Amsinckia tessellata var. tessellata	bristly fiddleneck		3
95	Boraginaceae	Cryptantha angustifolia	narrow-leaved cryptantha	99	1
96	Boraginaceae	Cryptantha barbigera	bearded cryptantha	20	9
97	Boraginaceae	Cryptantha barbigera var. fergusoniae	Santa Rosa Mountain bearded cryptantha		1
98	Boraginaceae	Cryptantha costata	ribbed cryptantha		1
99	Boraginaceae	Cryptantha decipiens	gravel cryptantha	10
100	Boraginaceae	Cryptantha intermedia	popcorn flower	99	1
101	Boraginaceae	Cryptantha maritima	Guadalupe cryptantha		2
102	Boraginaceae	Cryptantha racemosa	bushy cryptantha		3
103	Boraginaceae	Cryptantha utahensis	scented cryptantha	30	4
104	Boraginaceae	Pectocarya heterocarpa	chuckwalla pectocarya		1
105	Boraginaceae	Pectocarya penicillata	combseed	10	1
106	Boraginaceae	Pectocarya platycarpa	broad-fruited combseed		1
107	Boraginaceae	Pectocarya recurvata	curvenut combseed	30	4
108	Boraginaceae	Tiquilia palmeri	Palmer's coldenia		1
109	Brassicaceae	Arabis perennans	perennial rock-cress		2
110	Brassicaceae	Arabis pulchra	beautiful rock-cress		1
111	Brassicaceae	Athysanus pusillus	dwarf athysanus	5
112	Brassicaceae	Brassica tournefortii	*Asian mustard	20
113	Brassicaceae	Caulanthus cooperi	Cooper's jewel-flower		1
114	Brassicaceae	Descurainia pinnata ssp. glabra	smooth western tansy-mustard	2	1
115	Brassicaceae	Hutchinsia procumbens	prostrate hutchinsia		2
116	Brassicaceae	Lepidium lasiocarpum var. lasiocarpum	hairy-podded pepper-grass	50	3
117	Brassicaceae	Rorippa nasturtium-aquaticum	water cress	50
118	Brassicaceae	Sisymbrium irio	*London rocket	50
119	Brassicaceae	Sisymbrium orientale	*Oriental mustard	20
120	Brassicaceae	Thysanocarpus curvipes	fringe-pod	20	5
121	Brassicaceae	Thysanocarpus laciniatus	lace-pod		1
122	Brassicaceae	Tropidocarpum gracile	slender tropidocarpum		1
123	Cactaceae	Echinocereus engelmannii	Engelmann's hedgehog cactus	3
124	Cactaceae	Ferocactus cylindraceus	California barrel cactus	5	1
125	Cactaceae	Mammillaria tetrancistra	fish-hook cactus	1	2
126	Cactaceae	Opuntia basilaris var. basilaris	beavertail cactus	2
127	Cactaceae	Opuntia bigelovii	teddy-bear cholla	X
128	Cactaceae	Opuntia echinocarpa	silver cholla	X
129	Cactaceae	Opuntia ganderi	Gander's cholla	10
130	Campanulaceae	Lobelia cardinalis var. pseudosplendens	cardinal flower		2
131	Campanulaceae	Nemacladus glanduliferus	glandular nemacladus		2
132	Campanulaceae	Nemacladus glanduliferus var. orientalis	eastern glandular nemacladus		1
133	Campanulaceae	Nemacladus tenuis var. tenuis	desert threadplant		2
134	Capparaceae	Isomeris arborea	bladderpod		5
135	Caryophyllaceae	Cerastium glomeratum	*mouse-ear chickweed		2
136	Caryophyllaceae	Herniaria hirsuta ssp. cinerea	*grey herniaria		2
137	Caryophyllaceae	Loeflingia squarrosa var. squarrosa	spreading loeflingia		1
138	Caryophyllaceae	Sagina apetala	*dwarf pearlwort		3
139	Caryophyllaceae	Sagina decumbens ssp. occidentalis	western pearlwort		1
140	Caryophyllaceae	Silene antirrhina	snapdragon campion		3
141	Caryophyllaceae	Stellaria pallida	*pale starwort		2
142	Chenopodiaceae	Atriplex canescens ssp. linearis	narrow-leaf four-wing saltbush	~2	5
143	Chenopodiaceae	Atriplex lentiformis ssp. lentiformis	big saltbush	X
144	Chenopodiaceae	Chenopodium atrovirens	forest goosefoot		1
145	Chenopodiaceae	Chenopodium murale	*nettle-leaved goosefoot	10
146	Chenopodiaceae	Salsola tragus	*Russian thistle		1
147	Crassulaceae	Crassula connata	pygmy-weed	99	3
148	Crassulaceae	Dudleya saxosa ssp. aloides	desert dudleya		2
149	Crossosomataceae	Crossosoma bigelovii	rock crossosoma		7
150	Cucurbitaceae	Cucurbita palmata	coyote melon		1
151	Cucurbitaceae	Marah macrocarpus var. macrocarpus	wild-cucumber	1	2
152	Cuscutaceae	Cuscuta californica	California dodder		2
153	Datiscaceae	Datisca glomerata	Durango root		3
154	Euphorbiaceae	Chamaesyce arizonica	Arizona spurge		1
155	Euphorbiaceae	Chamaesyce polycarpa	small-seeded spurge	50	10
156	Euphorbiaceae	Chamaesyce setiloba	starfish (Yuma) spurge		1
157	Euphorbiaceae	Croton californicus	California croton		6
158	Euphorbiaceae	Ditaxis lanceolata	narrowleaf ditaxis	30	2
159	Euphorbiaceae	Ditaxis neomexicana	New Mexico ditaxis		3
160	Euphorbiaceae	Euphorbia eriantha	beetle spurge		2
161	Euphorbiaceae	Stillingia linearifolia	linear-leaved stillingia		1
162	Fabaceae	Acacia greggii	catclaw	30	6
163	Fabaceae	Amorpha californica var. californica	California false-indigo		1
164	Fabaceae	Amorpha fruticosa	western false-indigo	5	2
165	Fabaceae	Astragalus coccineus	scarlet milk-vetch		1
166	Fabaceae	Astragalus douglasii var. parishii	Parish' Jacumba milk-vetch		2
167	Fabaceae	Astragalus lentiginosus	freckled milk-vetch		1
168	Fabaceae	Astragalus nuttallianus	small-flowered milk-vetch		2
169	Fabaceae	Astragalus nuttallianus var. cedrosensis	Cedros milk-vetch	3	2
170	Fabaceae	Astragalus nuttallianus var. imperfectus	turkey-peas		1
171	Fabaceae	Astragalus palmeri	Palmer's milk-vetch		2
172	Fabaceae	Astragalus pomonensis	Pomona locoweed		1
173	Fabaceae	Caesalpinia virgata	wand holdback		1
174	Fabaceae	Cercidium floridum ssp. floridum	blue palo verde	10	1
175	Fabaceae	Lotus argophyllus var. argophyllus	southern California silver-lotus		6
176	Fabaceae	Lotus hamatus	San Diego birdsfoot lotus	30	2
177	Fabaceae	Lotus heermannii var. heermannii	silky lotus		3
178	Fabaceae	Lotus oblongifolius var. oblongifolius	streambank lotus		2
179	Fabaceae	Lotus purshianus var. purshianus	Spanish clover	~20
180	Fabaceae	Lotus rigidus	desert lotus		12
181	Fabaceae	Lotus salsuginosus var. brevivexillus	short-bannered coastal lotus	1	1
182	Fabaceae	Lotus scoparius var. brevialatus	short-winged deerweed	10	2
183	Fabaceae	Lotus strigosus	strigose lotus	2	2
184	Fabaceae	Lupinus arizonicus	Arizona lupine		5
185	Fabaceae	Lupinus concinnus	bajada lupine	20	2
186	Fabaceae	Lupinus sparsiflorus	Coulter's lupine		1
187	Fabaceae	Lupinus truncatus	collar lupine		1
188	Fabaceae	Melilotus indicus	*sourclover	50
189	Fabaceae	Prosopis glandulosa var. torreyana	honey mesquite	30	6
190	Fabaceae	Prosopis pubescens	screw-bean mesquite		3
191	Fabaceae	Psorothamnus arborescens var. simplicifolius	California indigo-bush		2
192	Fabaceae	Psorothamnus emoryi	Emory's indigo-bush		2
193	Fabaceae	Psorothamnus schottii	indigo bush	10	2
194	Fabaceae	Psorothamnus spinosus	smoke tree		1
195	Fabaceae	Trifolium microcephalum	small-head field clover		1
196	Fabaceae	Trifolium variegatum	variegated clover		2
197	Fagaceae	Quercus agrifolia	coast live oak		1
198	Fagaceae	Quercus wislizeni var. frutescens	interior live oak	1
199	Gentianaceae	Centaurium exaltatum	desert centaury		1
200	Gentianaceae	Centaurium venustum	canchalagua		2
201	Gentianaceae	Eustoma exaltatum	catchfly prairie-gentian		2
202	Geraniaceae	Erodium cicutarium	*redstem filaree	50
203	Geraniaceae	Erodium texanum	Texas filaree		1
204	Geraniaceae	Geranium carolinianum	Carolina geranium	10	1
205	Grossulariaceae	Ribes indecorum	white-flowering currant	1
206	Hydrophyllaceae	Emmenanthe penduliflora var. penduliflora	whispering bells	30	5
207	Hydrophyllaceae	Eriodictyon crassifolium var. crassifolium	thick-leaved yerba santa	20	8
208	Hydrophyllaceae	Eucrypta chrysanthemifolia var. bipinnatifida	eucrypta	40	3
209	Hydrophyllaceae	Eucrypta micrantha	desert eucrypta		1
210	Hydrophyllaceae	Nama demissum var. demissum	purple mat		2
211	Hydrophyllaceae	Nemophila menziesii	baby blue eyes		1
212	Hydrophyllaceae	Phacelia campanularia	desert bluebells		1
213	Hydrophyllaceae	Phacelia cicutaria var. hispida	caterpillar phacelia	50	2
214	Hydrophyllaceae	Phacelia crenulata var. ambigua	heliotrope phacelia		2
215	Hydrophyllaceae	Phacelia cryptantha	limestone phacelia		1
216	Hydrophyllaceae	Phacelia distans	common phacelia	99	5
217	Hydrophyllaceae	Phacelia minor	wild canterbury bells	40	3
218	Hydrophyllaceae	Phacelia pedicellata	pedicellate phacelia		1
219	Hydrophyllaceae	Phacelia ramosissima var. latifolia	branching phacelia		1
220	Hydrophyllaceae	Pholistoma membranaceum	white fiesta flower	99	12
221	Hydrophyllaceae	Turricula parryi	poodle-dog bush		1
222	Krameriaceae	Krameria erecta	Pima rhatany		2
223	Krameriaceae	Krameria grayi	white rhatany	10	7
224	Lamiaceae	Hyptis emoryi	desert-lavender	20	15
225	Lamiaceae	Salazaria mexicana	Mexican bladder sage		5
226	Lamiaceae	Salvia apiana	white sage	10	2
227	Lamiaceae	Salvia columbariae	chia	2
228	Lamiaceae	Salvia vaseyi	Vasey's sage		2
229	Lamiaceae	Stachys ajugoides var. rigida	rigid hedge-nettle	~10
230	Lamiaceae	Stachys stricta	Sonoma hedge-nettle		1
231	Lamiaceae	Trichostema parishii	Parish's bluecurls		1
232	Loasaceae	Mentzelia involucrata	bracted blazing star	5	3
233	Loasaceae	Petalonyx thurberi ssp. thurberi	Thurber's sandpaper-plant		5
234	Lythraceae	Lythrum californicum	California loosestrife		1
235	Malvaceae	Eremalche exilis	white mallow		4
236	Malvaceae	Hibiscus denudatus	rock hibiscus	2	8
237	Malvaceae	Malacothamnus densiflorus	yellow-stem bush mallow		1
238	Malvaceae	Sphaeralcea ambigua	apricot mallow		3
239	Malvaceae	Sphaeralcea ambigua var. ambigua	apricot mallow	50	8
240	Malvaceae	Sphaeralcea ambigua var. rosacea	rosy apricot mallow		10
241	Malvaceae	Sphaeralcea ambigua var. rugosa	desert globemallow		1
242	Nyctaginaceae	Abronia villosa var. aurita	hairy sand verbena		1
243	Nyctaginaceae	Allionia incarnata	trailing four o'clock		8
244	Nyctaginaceae	Boerhavia coccinea	scarlet spiderling	1	5
245	Nyctaginaceae	Mirabilis bigelovii var. bigelovii	Bigelow's desert four-o'clock		3
246	Nyctaginaceae	Mirabilis bigelovii var. retrorsa	Bigelow's desert four-o'clock	10	4
247	Nyctaginaceae	Mirabilis multiflora var. pubescens	giant four o'clock		1
248	Nyctaginaceae	Mirabilis tenuiloba	slender-lobed four o'clock	25	3
249	Oleaceae	Forestiera pubescens	desert olive		1
250	Onagraceae	Camissonia boothii ssp. condensata	Booth's evening primrose		2
251	Onagraceae	Camissonia californica	California suncup	5	1
252	Onagraceae	Camissonia cardiophylla ssp. cardiophylla	heartleaf sun-cup	2	3
253	Onagraceae	Camissonia chamaenerioides	long-fruit suncup		2
254	Onagraceae	Camissonia claviformis ssp. aurantiaca	brown-eyed primrose	10	2
255	Onagraceae	Camissonia pallida ssp. pallida	pale sun-cup	50	6
256	Onagraceae	Camissonia strigulosa	strigose sun-cup		1
257	Onagraceae	Clarkia epilobioides	canyon clarkia		1
258	Onagraceae	Epilobium canum ssp. latifolium	mountain California-fuchsia	30	3
259	Onagraceae	Gayophytum heterozygum	zig-zag gayophytum		1
260	Onagraceae	Oenothera elata ssp. hirsutissima	Hooker's evening-primrose	5
261	Orobanchaceae	Orobanche fasciculata	clustered broom-rape		1
262	Papaveraceae	Argemone munita	prickly poppy		1
263	Papaveraceae	Eschscholzia caespitosa	tufted eschscholzia		1
264	Papaveraceae	Eschscholzia minutiflora ssp. minutiflora	small-flowered poppy	10	2
265	Papaveraceae	Eschscholzia parishii	Parish's poppy		6
266	Plantaginaceae	Plantago ovata	desert plantain	10	3
267	Plantaginaceae	Plantago patagonica	Patagonia plantain		3
268	Platanaceae	Platanus racemosa	western sycamore	5	7
269	Polemoniaceae	Eriastrum diffusum	miniature woolly-star		3
270	Polemoniaceae	Eriastrum eremicum ssp. eremicum	desert woolly-star		1
271	Polemoniaceae	Gilia angelensis	angel's gilia	40	4
272	Polemoniaceae	Gilia australis	southern gilia	20	5
273	Polemoniaceae	Gilia latifolia	broad-leaf gilia		1
274	Polemoniaceae	Gilia stellata	star gilia	2	4
275	Polemoniaceae	Langloisia setosissima ssp. setosissima	bristly langloisia		1
276	Polemoniaceae	Linanthus jonesii	Jones' linanthus		1
277	Polemoniaceae	Loeseliastrum schottii	Schott's calico		1
278	Polygonaceae	Chorizanthe brevicornu var. brevicornu	brittle spineflower	10	2
279	Polygonaceae	Eriogonum elongatum var. elongatum	long-stemmed buckwheat	5
280	Polygonaceae	Eriogonum fasciculatum var. polifolium	California buckwheat	5	6
281	Polygonaceae	Eriogonum inflatum	desert trumpet	10	4
282	Polygonaceae	Eriogonum thurberi	Thurber's buckwheat		1
283	Polygonaceae	Eriogonum trichopes	little desert trumpet		1
284	Polygonaceae	Eriogonum wrightii var. nodosum	Wright's buckwheat	2	8
285	Polygonaceae	Pterostegia drymarioides	threadstem	20
286	Portulacaceae	Calyptridium monandrum	sand cress		1
287	Portulacaceae	Claytonia parviflora ssp. parviflora	narrow-leaved miner's lettuce	1	2
288	Primulaceae	Anagallis arvensis	*scarlet pimpernel	1
289	Ranunculaceae	Clematis pauciflora	virgin's bower	1	1
290	Ranunculaceae	Delphinium parishii ssp. parishii	Parish's larkspur	10	14
291	Ranunculaceae	Ranunculus cymbalaria var. saximontanus	Rocky Mountain buttercup		1
292	Rhamnaceae	Ziziphus parryi var. parryi	lotebush	1	9
293	Rosaceae	Prunus fasciculata	desert almond		1
294	Rosaceae	Prunus fremontii	desert apricot	10	18
295	Rubiaceae	Galium angustifolium ssp. angustifolium	narrowleaf bedstraw	3	1
296	Rubiaceae	Galium angustifolium ssp. gracillimum	slender bedstraw		1
297	Rubiaceae	Galium aparine	common bedstraw	20
298	Rubiaceae	Galium stellatum var. eremicum	star-flowered bedstraw		6
299	Salicaceae	Populus fremontii ssp. fremontii	Fremont cottonwood	2	3
300	Salicaceae	Salix exigua	narrowleaf willow	5	3
301	Salicaceae	Salix gooddingii	black willow	1	3
302	Salicaceae	Salix laevigata	red willow		2
303	Saxifragaceae	Jepsonia parryi	coast jepsonia		1
304	Scrophulariaceae	Antirrhinum filipes	desert twining snapdragon		4
305	Scrophulariaceae	Castilleja foliolosa	woolly Indian paintbrush		2
306	Scrophulariaceae	Castilleja minor ssp. spiralis	lesser paintbrush	10	1
307	Scrophulariaceae	Keckiella antirrhinoides var. microphylla	little-leaved chaparral beard-tongue		1
308	Scrophulariaceae	Mimulus bigelovii var. bigelovii	Bigelow's monkeyflower		2
309	Scrophulariaceae	Mimulus guttatus	common monkeyflower	75	4
310	Scrophulariaceae	Mimulus parishii	Parish's monkeyflower		1
311	Scrophulariaceae	Mimulus pilosus	false monkeyflower		1
312	Scrophulariaceae	Mohavea confertiflora	ghost flower		1
313	Scrophulariaceae	Penstemon clevelandii var. connatus	San Jacinto beardtongue		4
314	Scrophulariaceae	Stemodia durantifolia	white-woolly stemodia		11
315	Scrophulariaceae	Veronica anagallis-aquatica	*water speedwell		1
316	Scrophulariaceae	Veronica arvensis	*corn speedwell		1
317	Simmondsiaceae	Simmondsia chinensis	jojoba	1	6
318	Solanaceae	Datura wrightii	sacred datura	3
319	Solanaceae	Lycium andersonii	Anderson's desert-thorn	20	6
320	Solanaceae	Lycium brevipes var. brevipes	desert-thorn		1
321	Solanaceae	Lycium torreyi	Torrey's box-thorn		2
322	Solanaceae	Nicotiana attenuata	coyote tobacco		1
323	Solanaceae	Nicotiana obtusifolia	desert tobacco	10	12
324	Solanaceae	Physalis crassifolia	thick-leaved ground cherry	1	5
325	Solanaceae	Solanum douglasii	white nightshade	1	4
326	Sterculiaceae	Ayenia compacta	ayenia		6
327	Tamaricaceae	Tamarix aphylla	*athel		1
328	Tamaricaceae	Tamarix ramosissima	*saltcedar		1
329	Urticaceae	Parietaria hespera var. hespera	pellitory	50	6
330	Urticaceae	Parietaria pensylvanica	Pennsylvania pellitory		2
331	Viscaceae	Phoradendron californicum	desert mistletoe	30	8
332	Vitaceae	Vitis girdiana	wild grape	99	4
333	Zygophyllaceae	Fagonia laevis	California fagonia		4
334	Zygophyllaceae	Larrea tridentata	creosote bush	50	8
335	Arecaceae	Washingtonia filifera	California fan palm	65	1
336	Cyperaceae	Carex alma	sturdy sedge		2
337	Cyperaceae	Cyperus involucratus	*umbrella plant	10	8
338	Cyperaceae	Cyperus squarrosus	bearded flatsedge		1
339	Cyperaceae	Eleocharis geniculata	bent spikerush		6
340	Cyperaceae	Eleocharis parishii	Parish's spikerush		9
341	Cyperaceae	Scirpus americanus	American tule		6
342	Juncaceae	Juncus acutus ssp. leopoldii	spiny rush		4
343	Juncaceae	Juncus bufonius	toad rush		1
344	Juncaceae	Juncus mexicanus	Mexican rush	X
345	Juncaceae	Juncus rugulosus	wrinkled rush		1
346	Juncaceae	Juncus xiphioides	iris-leaved rush	1	3
347	Lemnaceae	Lemna minuta	duckweed		1
348	Liliaceae	Agave deserti	desert agave		1
349	Liliaceae	Allium marvinii	Yucaipa onion		1
350	Liliaceae	Dichelostemma capitatum ssp. capitatum	blue dicks	30	9
351	Liliaceae	Nolina parryi	Parry's nolina	3
352	Liliaceae	Yucca schidigera	Mohave yucca	T	5
353	Liliaceae	Yucca whipplei	chaparral yucca	T
354	Orchidaceae	Epipactis gigantea	stream orchid		15
355	Poaceae	Achnatherum coronatum	giant needlegrass		1
356	Poaceae	Achnatherum speciosum	desert needlegrass		2
357	Poaceae	Acrachne racemosa	*goosegrass		1
358	Poaceae	Agrostis exarata	spike bentgrass		1
359	Poaceae	Agrostis viridis	*green bentgrass		1
360	Poaceae	Andropogon glomeratus var. scabriglumis	southwestern bushy bluestem		4
361	Poaceae	Aristida adscensionis	six-weeks three-awn	10	5
362	Poaceae	Aristida purpurea	purple three-awn	10
363	Poaceae	Aristida purpurea var. nealleyi	Nealley three-awn		3
364	Poaceae	Aristida purpurea var. parishii	Parish three-awn		1
365	Poaceae	Avena barbata	*slender wild oats	20
366	Poaceae	Bothriochloa barbinodis	cane bluestem		3
367	Poaceae	Bromus carinatus var. carinatus	California brome	40	1
368	Poaceae	Bromus diandrus	*ripgut brome	99	1
369	Poaceae	Bromus hordeaceus	*soft chess	15	1
370	Poaceae	Bromus madritensis ssp. rubens	*red brome	99	5
371	Poaceae	Bromus tectorum	*downy brome	30
372	Poaceae	Bromus trinii	*Chilean chess		5
373	Poaceae	Cenchrus longispinus	*mat sandbur		1
374	Poaceae	Cynodon dactylon	*Bermuda grass	10	2
375	Poaceae	Dactyloctenium aegyptium	*crows-foot grass		3
376	Poaceae	Distichlis spicata	saltgrass	10
377	Poaceae	Erioneuron pulchellum	fluff grass		2
378	Poaceae	Hordeum murinum	*foxtail barley	99
379	Poaceae	Hordeum murinum ssp. glaucum	*foxtail barley		1
380	Poaceae	Imperata brevifolia	satintail		1
381	Poaceae	Melica frutescens	tall melica		2
382	Poaceae	Muhlenbergia microsperma	littleseed muhly	10	3
383	Poaceae	Muhlenbergia rigens	deergrass	10
384	Poaceae	Nassella lepida	foothill needlegrass	3
385	Poaceae	Pennisetum setaceum	*fountain grass	99
386	Poaceae	Pleuraphis rigida	big galleta	50	5
387	Poaceae	Poa bigelovii	Bigelow's blue grass		6
388	Poaceae	Poa secunda ssp. secunda	one-sided bluegrass	10	4
389	Poaceae	Polypogon monspeliensis	*rabbits-foot grass	10
390	Poaceae	Schismus barbatus	*Mediterranean schismus	99	1
391	Poaceae	Stipa capensis	*spear needlegrass	99
392	Poaceae	Vulpia bromoides	*brome fescue	~30	1
393	Poaceae	Vulpia myuros	*rattail fescue		2
394	Poaceae	Vulpia myuros var. hirsuta	*hairy rattail fescue		1
395	Poaceae	Vulpia octoflora	six-weeks fescue		4
396	Typhaceae	Typha latifolia	broadleaf cattail		1

Taxa Rejected From The Checklist

Taxa Rejected Due To Uncertain Locations

The taxon name is linked to the online voucher record.

The following three species are higher-elevation taxa, from collections made by Jepson on a trip from Vandeventer Flat to Palm Canyon and back, and were probably collected in Palm Canyon above 3000 feet elevation, or from a Peirson trip along the Gordon Trail from Andreas Canyon to Mt. San Jacinto:

• Eriogonum davidsonii, JEPS56704;

• Monardella nana ssp. arida, JEPS63359.

• Ceanothus greggii var. perplexans, RSA77714.

Taxa Rejected Due To Probably-Incorrect Determinations

Yucca baccata, JEPS46498. This voucher was determined in 1901, and its determination has apparently not been revisited since then. It is almost surely not Yucca baccata, which is only found in the eastern desert mountains near the Colorado River. This is probably Y. schidigera.

Amsinckia spectabilis, UC306211. This voucher is actually the type specimen for A. divaricata. The correct synonymy for this species is probably A. tessellatta, or perhaps A. menziesii var. intermedia, since A. spectabilis is an immediate-coastal species.

Cirsium neomexicanum, UC61517. This voucher is almost surely not Cirsium neomexicanum, which is only found in the eastern desert mountains.

Allium haematochiton, UCR133190. This voucher was collected at San Jacinto Mtns. canyon above Palm Springs, which is not near other populations of Allium haematochiton, which is a coastal taxon. Perhaps this is actually A. marvinii, or perhaps the voucher was taken at an elevation higher than 3000 feet.

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

Go to:

• Gilias of Lowermost Tahquitz Canyon
• Plants of Southern California: Regional Floras