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 the first two 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 Tom Chester and Robert Hepburn 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 Tom Chester, Robert Hepburn, James Dillane, Kate Harper, Dave Stith, and Pam Pallette. 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.

The field work on 14 December 2017 was done by Keir Morse and Tom Chester, on our hike down the lower part of the Jo Pond and West Fork Trail, after surveying the trail for Malacothamnus densiflorus. This survey was done fairly hurriedly, since we were running out of time at the end of the day, and the lowermost part of the trail had to be skipped. That survey recorded 79 taxa, of which 23, 29% of the total, were not on the voucher list. Of those 23, nine had not been seen in any of our previous surveys, and so were new additions to the Checklist.

Total Checklist

The total checklist below contains 404 taxa. Of those, 200 were present only from vouchers; 145 were present both in our surveys and in vouchers; and 59 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% to 29% 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

See:

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

The column with header Fam gives the first three letters of the Jepson Manual Second Edition Family.

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

The column #Pls gives the minimum number of plants found in two areas. The first column, with header WF, gives the number of plants observed on a 14 December 2017 survey by Keir Morse and Tom Chester. The second column, with header MT, gives the number of plants found in the 6 April 2011 survey of Tahquitz Canyon from the parking lot to the waterfall, and in 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, or found by Robert Hepburn afterward, are marked with a T in this column, with one species found at Murray Spring by Robert Hepburn marked with a M. 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 truncated at a maximum value of 9.

See also the list of rejected species given below.

Version for printing, without lines and other text on this page: html (11 pages) or pdf Clickbook booklet (3 double-sided pages). (See printing instructions for an explanation of these options)

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

Taxa Rejected From The Checklist

Taxa Rejected As Probably Waifs

Acrachne racemosa, UCR71763&. The Jepson Manual says that this taxon is either extirpated, lacking vouchers, or not considered naturalized.

Gossypium armourianum, JEPS102920. This is a cotton species native to Baja California, collected in 1995 from Palm Springs, ca. 1.5 mi S of jct of East Palm Canyon and South Palm Canyon. Andy Sanders wrote that There was an old agricultural extension station along the west side of the main road (Palm Cyn. Dr.) up toward Palm Canyon/Hermit Bench. These cotton plants are likely escapees from that. The Jepson Manual treatment says this species only persists from plantings in California.

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:

• Ceanothus greggii var. perplexans, RSA77714.

• Eriogonum davidsonii, JEPS56704;

• Monardella nana ssp. arida, JEPS63359.

Taxa Rejected Due To Probably-Incorrect Determinations

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.

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.

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.

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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