Flora of Palm Wash Area

Introduction

This is a checklist for the Palm Wash area from about two miles west of the San Diego / Imperial County border to about one mile east of the border. The area is broken into two sections:

• The west section is at and west of the intersection of the Calcite Mine Road with the south fork of Palm Wash, and includes the upper parts of the middle fork of Palm Wash and the Calcite Mine area. Vouchers from S22 in this area are also included. This area is entirely in San Diego County.

• The east section is east of that intersection in the south fork of Palm Wash. This section includes the Freeman Property, which was extensively vouchered by Jon Rebman and coworkers. This section extends from 0.8 miles west of the Imperial County line, to about one mile east of that line.

Fig. 1 shows the two sections of the flora, along with areas surveyed and most of the voucher locations. Some of the voucher locations are to the north of this map, in Big Wash and Grave Wash.

Fig. 1. Map of the Palm Wash Area, showing the dividing line between the West and East Floras; locations surveyed in the West Flora (green routes); locations surveyed in the East Flora (red route); and voucher locations (blue diamonds). The Calcite Mine area is circled at upper left. Click on the map for a larger map without labels.

Checklist for Palm Wash Area

See:

• Notes on the Scientific Names Used At This Site and
• Information about the order in which the species are presented, and the links from the Scientific Name and Common Name.

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

The minimum number of observed plants in each of the floral areas is given in the last two columns. The column with header E is for the East Flora; the column with header W is for the West Flora. Note that the West Flora is given in the right-most column, which makes those numbers more prominent since we typically work on that flora more than we do the East Flora.

In both columns, an x indicates we have observed that taxon but no abundance estimate was made; and a V indicates a vouchered species we haven't seen.

Version for printing, without lines and other text on this page, with West column on right: html (4 pages) or pdf Clickbook booklet (1 double-sided page). (See printing instructions for an explanation of these options)

Version for printing with the East column on right: html (4 pages) or pdf Clickbook booklet (1 double-sided page).

In the checklist below, the column with header NPM gives the # of plants observed in a one mile survey from the North fork of Palm wash to the east end of the Mesa between Palm Wash and Grave Wash.

#	Fam	Scientific Name	(*)Common Name	W	E	NPM
Ferns
1	Pte	Cheilanthes parryi	woolly lipfern		V
Eudicots
2	Ama	Tidestromia suffruticosa var. oblongifolia	Arizona honeysweet	99	3
3	Apo	Asclepias albicans	white-stemmed milkweed	16
4	Apo	Asclepias erosa	desert milkweed		V
5	Apo	Asclepias subulata	rush milkweed		~1
6	Apo	Funastrum hirtellum	rambling milkweed	4	V	3
7	Apo	Pilostyles thurberi	Thurber's pilostyles	2	x
8	Ast	Adenophyllum porophylloides	San Felipe dogweed		V
9	Ast	Ambrosia dumosa	burroweed	99	99	3
10	Ast	Ambrosia salsola var. salsola	cheesebush	99	99	40
11	Ast	Bebbia juncea var. aspera	sweetbush	99	7	10
12	Ast	Calycoseris wrightii	white tackstem	99	V	10
13	Ast	Chaenactis carphoclinia var. carphoclinia	pebble pincushion	99	x	99
14	Ast	Chaenactis carphoclinia var. peirsonii	Peirson's pincushion		20?	99
15	Ast	Chaenactis fremontii	Fremont pincushion		V
16	Ast	Chaenactis stevioides	desert pincushion		3	5
17	Ast	Encelia farinosa	brittlebush	99	1	15
18	Ast	Encelia frutescens	button encelia		V
19	Ast	Geraea canescens	hairy desert-sunflower	99	99	10
20	Ast	Isocoma acradenia var. eremophila	solitary-leaved alkali goldenbush		x
21	Ast	Lactuca serriola	*prickly lettuce			1
22	Ast	Logfia arizonica	Arizona herba impia		V
23	Ast	Malacothrix glabrata	desert dandelion		V	5
24	Ast	Monoptilon bellioides	desert star		x	99
25	Ast	Palafoxia arida var. arida	Spanish needle	95	25	1
26	Ast	Perityle emoryi	Emory's rock-daisy	30	V	99
27	Ast	Peucephyllum schottii	pygmy-cedar	99	1
28	Ast	Pleurocoronis pluriseta	arrow-leaf	60	1	1
29	Ast	Pluchea sericea	arrow-weed		V
30	Ast	Psathyrotes ramosissima	turtleback	3	V	73
31	Ast	Rafinesquia neomexicana	desert chicory	12	1	10
32	Ast	Senecio mohavensis	Mojave ragwort	11	V	10
33	Ast	Sonchus oleraceus	*sow thistle		V
34	Ast	Stephanomeria exigua ssp. exigua	slender wreathplant	V
35	Ast	Stephanomeria pauciflora	wire-lettuce	50	10	3
36	Ast	Stylocline intertexta	tangled nest-straw		V
37	Ast	Trichoptilium incisum	yellow-head		V	5
38	Ast	Trixis californica var. californica	California trixis	1
39	Ast	Xylorhiza orcuttii	Orcutt's woody-aster	10	5
40	Bor	Cryptantha angustifolia	narrow-leaved cryptantha	99	4	99
41	Bor	Cryptantha barbigera var. barbigera	bearded cryptantha		x	10
42	Bor	Cryptantha barbigera var. fergusoniae	Santa Rosa Mountain bearded cryptantha		V	2
43	Bor	Cryptantha costata	ribbed cryptantha		x
44	Bor	Cryptantha maritima	Guadalupe cryptantha	25	x	30
45	Bor	Cryptantha racemosa	bushy cryptantha	2
46	Bor	Eucrypta micrantha	desert eucrypta		V
47	Bor	Nama pusilla	small-leaved nama		V
48	Bor	Pectocarya heterocarpa	chuckwalla pectocarya		V
49	Bor	Pectocarya platycarpa	broad-fruited combseed		V
50	Bor	Pectocarya recurvata	curvenut combseed		V	20
51	Bor	Phacelia crenulata var. ambigua	heliotrope phacelia	99	99	99
52	Bor	Phacelia crenulata var. minutiflora	little-flowered heliotrope phacelia	1
53	Bor	Phacelia neglecta	alkali phacelia		V	99
54	Bor	Tiquilia palmeri	Palmer's coldenia	50	5
55	Bor	Tiquilia plicata	plicate coldenia		50
56	Bra	Brassica tournefortii	*Sahara mustard	99	99	20
57	Bra	Caulanthus lasiophyllus	California mustard		V
58	Bra	Descurainia pinnata	western tansy-mustard		V
59	Bra	Dithyrea californica	spectacle-pod		V
60	Bra	Draba cuneifolia	wedge-leaved draba		V
61	Bra	Lepidium lasiocarpum ssp. lasiocarpum	hairy-podded pepper-grass		x	30
62	Bra	Sisymbrium irio	*London rocket		V	30
63	Bra	Streptanthella longirostris	longbeak streptanthella	10	x
64	Cac	Cylindropuntia echinocarpa	silver cholla	25	3	2
65	Cac	Cylindropuntia ganderi	Gander's cholla	3
66	Cac	Cylindropuntia ramosissima	pencil cholla		V
67	Cac	Ferocactus cylindraceus	California barrel cactus	2	V
68	Cac	Mammillaria tetrancistra	desert fish-hook cactus		V	1
69	Cac	Opuntia basilaris var. basilaris	beavertail cactus	7	V	3
70	Cam	Nemacladus glanduliferus	glandular nemacladus		V	99
71	Cam	Nemacladus tenuis var. aliformis	desert threadplant		V
72	Cam	Nemacladus tenuis var. tenuis	desert threadplant		V	50
73	Car	Achyronychia cooperi	frost mat	2	10
74	Che	Allenrolfea occidentalis	iodine-bush		V
75	Che	Atriplex canescens var. laciniata	Caleb saltbush	40	50	5
76	Che	Atriplex hymenelytra	desert holly	35	35
77	Che	Atriplex polycarpa	cattle saltbush	10	20
78	Che	Chenopodium murale	*nettle-leaved goosefoot		V
79	Che	Salsola gobicola	*hybrid thistle		V
80	Che	Salsola paulsenii	*Paulsen's Russian thistle		V
81	Che	Suaeda nigra	bush seepweed		x
82	Eup	Chamaesyce polycarpa	small-seeded spurge	99	10	1
83	Eup	Ditaxis lanceolata	narrowleaf ditaxis	2	V
84	Eup	Ditaxis neomexicana	New Mexico ditaxis		V
85	Eup	Ditaxis serrata var. californica	California ditaxis	1
86	Fab	Acmispon maritimus var. brevivexillus	short-bannered coastal lotus		1
87	Fab	Acmispon strigosus	strigose lotus		10	5
88	Fab	Astragalus aridus	annual desert milk-vetch		V
89	Fab	Astragalus crotalariae	Salton milk-vetch		V
90	Fab	Astragalus sabulonum	gravel milk-vetch		V
91	Fab	Dalea mollis	silky dalea		V	40
92	Fab	Dalea mollissima	downy dalea		V
93	Fab	Lupinus arizonicus	Arizona lupine	99	20	99
94	Fab	Parkinsonia florida	blue palo verde		V
95	Fab	Prosopis glandulosa var. torreyana	honey mesquite	1	x
96	Fab	Psorothamnus emoryi	Emory's indigo-bush	25	x
97	Fab	Psorothamnus schottii	indigo bush	50	99	10
98	Fab	Psorothamnus spinosus	smoke tree	30	40	1
99	Fab	Senegalia greggii	catclaw	40	35	5
100	Fou	Fouquieria splendens ssp. splendens	ocotillo	99	10	40
101	Ger	Erodium cicutarium	*redstem filaree		V
102	Ger	Erodium texanum	Texas filaree	2	x
103	Kra	Krameria bicolor	white rhatany		V
104	Kra	Krameria erecta	Pima rhatany	1	1	15
105	Lam	Hyptis emoryi	desert-lavender	50	5	15
106	Loa	Mentzelia affinis	yellow blazing star		4?
107	Loa	Mentzelia desertorum	desert blazing star		V
108	Loa	Mentzelia involucrata	bracted blazing star	50	50	10
109	Loa	Petalonyx thurberi ssp. thurberi	Thurber's sandpaper-plant	40	5
110	Mal	Eremalche rotundifolia	desert five-spot		1	10
111	Mal	Hibiscus denudatus	rock hibiscus		V	1
112	Mal	Sphaeralcea ambigua var. ambigua	apricot mallow		V
113	Mon	Cistanthe ambigua	dead man's fingers		99	30
114	Nyc	Abronia villosa var. villosa	hairy sand-verbena	70	99
115	Nyc	Allionia incarnata var. incarnata	small-flowered trailing four o'clock	2	x	1
116	Nyc	Boerhavia wrightii	Wright's spiderling	V
117	Nyc	Mirabilis laevis var. retrorsa	Bigelow's desert four-o'clock		V	2
118	Ona	Chylismia cardiophylla ssp. cardiophylla	heartleaf suncup	90	V
119	Ona	Chylismia claviformis ssp. peirsonii	brown-eyed primrose	99	99	99
120	Ona	Eremothera boothii ssp. condensata	Booth's evening primrose	50	99	99
121	Ona	Eulobus californicus	California suncup	70	4
122	Ona	Oenothera deltoides ssp. deltoides	dune primrose		3
123	Oro	Orobanche cooperi	Cooper's broomrape	17	V
124	Pap	Eschscholzia minutiflora ssp. minutiflora	small-flowered poppy	V	V
125	Pap	Eschscholzia parishii	Parish's poppy		V	30
126	Pla	Mohavea confertiflora	ghost flower		V	30
127	Pla	Plantago ovata	desert plantain	99	99	99
128	Pol	Aliciella latifolia ssp. latifolia	broad-leaf gilia	18	7	99
129	Pol	Gilia stellata	star gilia		x	8
130	Pol	Langloisia setosissima ssp. setosissima	bristly langloisia		2	99
131	Pol	Linanthus jonesii	Jones' linanthus		V	1
132	Pol	Loeseliastrum matthewsii	desert calico		~1
133	Pol	Loeseliastrum schottii	Schott's calico		V
134	Pol	Chorizanthe brevicornu var. brevicornu	brittle spineflower	11	V	99
135	Pol	Chorizanthe corrugata	wrinkled spineflower	5	V	99
136	Pol	Chorizanthe rigida	devil's spineflower	6	20	99
137	Pol	Eriogonum deflexum var. deflexum	flat-topped buckwheat	2	V
138	Pol	Eriogonum deserticola	Colorado Desert buckwheat		V
139	Pol	Eriogonum inflatum	desert trumpet	99	10	2
140	Pol	Eriogonum thomasii	Thomas' buckwheat	90	35	99
141	Pol	Eriogonum trichopes	little desert trumpet	99	99	?
142	Pol	Pterostegia drymarioides	fairy bowties, threadstem		V
143	Res	Oligomeris linifolia	lineleaf whitepuff		5
144	Sol	Lycium brevipes	desert boxthorn		V	7
145	Sol	Nicotiana obtusifolia	desert tobacco	99	2	1
146	Sol	Physalis crassifolia	thick-leaved ground cherry		V
147	Tam	Tamarix aphylla	*athel		V
148	Tam	Tamarix ramosissima	*saltcedar		x
149	Vis	Phoradendron californicum	desert mistletoe	10	25	1
150	Zyg	Fagonia pachyacantha	sticky fagonia		V
151	Zyg	Larrea tridentata	creosote bush	99	99	99
Monocots
152	Aga	Hesperocallis undulata	desert lily	99	99
153	Are	Washingtonia filifera	California fan palm		x
154	Jun	Juncus cooperi	Cooper's rush		x
155	Poa	Aristida adscensionis	six-weeks three-awn	4	15
156	Poa	Bromus madritensis ssp. rubens	*red brome		V
157	Poa	Dasyochloa pulchella	fluff grass	1
158	Poa	Distichlis spicata	saltgrass	5
159	Poa	Festuca bromoides	*brome fescue		V
160	Poa	Festuca octoflora	hairy six-weeks fescue		V
161	Poa	Hilaria rigida	big galleta	52	99	5
162	Poa	Hordeum murinum ssp. glaucum	*foxtail barley		V
163	Poa	Phalaris minor	*little-seed canarygrass		V
164	Poa	Schismus arabicus	*Mediterranean grass		V
165	Poa	Schismus barbatus	*Mediterranean schismus	99	99	99

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