Flora of San Sebastian Marsh, Imperial County

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Introduction
Checklist

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Introduction

This checklist is a start at a true flora of the San Sebastian Marsh Area. It consists of the species found in a single survey on 31 January 2011 and vouchers of the area.

The survey on 31 January 2011 was done by the authors, and found 47 taxa. The survey was of a 6 mile loop of the eastern portion of the Marsh area, from the longitude of Harper's Well on the west to the longitude of the junction of the two branches of the Old Kane Spring Road on the east.

The vouchered species on this checklist come from a search on 1 February 2011 of the Consortium of California Herbaria.

The Consortium records were searched for vouchers with coordinates between 33.04 and 33.13° N. Latitude, and -116.00 and -115.83 E. Longitude. Additional searches were made for vouchers from Imperial County from Charles Convis, and with the term Sebastian in their locality field.

Localities of those vouchers were examined and two not definitely in the target area were eliminated.

Two vouchered species are significantly out of range, and may not be correctly determined: Tiquilia nuttallii and Lepidium nitidum var. howellii.

The voucher determination of Eriogonum inflatum was changed to E. trichopes, since the voucher description said the plants were annual, and we observed E. trichopes here, not E. inflatum. It is a common mistake, which we made ourselves the first time we saw this species, to mistake E. trichopes as being young plants of E. inflatum.

The final voucher list contained 158 vouchers of 88 taxa. Adding together all the vouchers associated with a given collector name produces the following list of top individual collectors, which includes all people who have collected more than three vouchers:

# Vouchers	% Vouchers	Collector
82	52%	Charles Convis
17	11%	Dean Wm. Taylor
12	8%	A. C. Sanders, P. J. MacKay, Tim Thomas, E. J. Lawlor, et al.
8	5%	Steven R. Hill, K. Kramer
5	3%	T. L. Secrest
158	100%	All Collectors

Charles Convis was the top collector by far, as part of his U.C. Santa Cruz San Sebastian Marsh Project, Plants of San Sebastian Marsh Area.

Leslie Sokolow, responding to our request previously made on this webpage for a copy of the botanical report from Convis for the Marsh, kindly sent us a copy on 20 December 2011. In the next major update of this page, we'll include any additional species in the list by Convis, as well as any additional botanical tidbits from that report.

The total checklist contains 96 taxa.

Checklist for San Sebastian Marsh

The Checklist is sorted first by category - dicots, monocots, and ferns - and then by family and scientific name. The Family and Scientific Name are from the Jepson Manual 1996 First Edition, with the Family name being abbreviated to eight characters.

The column titled #Pl gives the number of plants found in our single survey, with a maximum of 99 plants.

The column titled #V gives the number of vouchers found for this area.

The column titled #BD gives the number of survey areas and floras in the Borrego Desert to the northwest in which each taxon was found.

Voucher locations for any taxon can be obtained by searching the Consortium of California Herbaria for the taxon name.

Version for printing, without lines and other text on this page: html (3 pages) or pdf Clickbook booklet (1 double-sided page). (See printing instructions for an explanation of these options)

#	FAM	Scientific Name	(*)Common Name	#Pl	#V	#BD
1	Asterace	Ambrosia dumosa	burroweed	50	2	57
2	Asterace	Baccharis emoryi	Emory's baccharis		1	2
3	Asterace	Baileya pauciradiata	Colorado Desert marigold		2	2
4	Asterace	Carthamus tinctorius	*safflower		1	0
5	Asterace	Dicoria canescens	desert dicoria	20	3	10
6	Asterace	Encelia farinosa	brittlebush	1		59
7	Asterace	Encelia frutescens	button encelia	99	4	11
8	Asterace	Geraea canescens	hairy desert-sunflower	99	4	12
9	Asterace	Hymenoclea salsola	cheesebush		1	0
10	Asterace	Isocoma acradenia var. eremophila	solitary-leaved alkali goldenbush	10	6	7
11	Asterace	Malacothrix glabrata	desert dandelion		1	28
12	Asterace	Palafoxia arida var. arida	desert needle	30	5	30
13	Asterace	Pluchea sericea	arrow-weed		2	11
14	Asterace	Psathyrotes ramosissima	turtleback		2	3
15	Asterace	Rafinesquia neomexicana	desert chicory		1	39
16	Asterace	Sonchus asper ssp. asper	*prickly sow thistle	5		3
17	Asterace	Stephanomeria pauciflora var. pauciflora	wire-lettuce		1	53
18	Boragina	Amsinckia menziesii var. intermedia	common fiddleneck		1	11
19	Boragina	Cryptantha angustifolia	narrow-leaved cryptantha	99	3	29
20	Boragina	Cryptantha maritima	Guadalupe cryptantha	99	1	27
21	Boragina	Cryptantha micrantha	purple-root cryptantha		1	6
22	Boragina	Heliotropium curassavicum	seaside heliotrope		1	1
23	Boragina	Pectocarya heterocarpa	chuckwalla pectocarya		4	12
24	Boragina	Tiquilia nuttallii	Nuttall's coldenia		1	0
25	Boragina	Tiquilia palmeri	Palmer's coldenia		3	19
26	Boragina	Tiquilia plicata	plicate coldenia	20	1	9
27	Brassica	Brassica tournefortii	*Asian mustard	99	2	57
28	Brassica	Dithyrea californica	spectacle-pod		1	11
29	Brassica	Lepidium lasiocarpum var. lasiocarpum	hairy-podded pepper-grass	99	4	40
30	Brassica	Lepidium nitidum var. howellii	Howell's pepper-grass		1	0
31	Brassica	Sisymbrium irio	*London rocket	20	1	15
32	Brassica	Streptanthella longirostris	longbeak streptanthella		1	5
33	Capparac	Cleomella obtusifolia	Mojave cleomella		1	2
34	Caryophy	Achyronychia cooperi	frost mat		2	11
35	Chenopod	Allenrolfea occidentalis	iodine-bush	1	1	2
36	Chenopod	Atriplex canescens	fourwing saltbush	99	1	0
37	Chenopod	Atriplex canescens ssp. canescens	four-wing saltbush		2	15
38	Chenopod	Atriplex elegans var. fasciculata	wheelscale		2	0
39	Chenopod	Atriplex hymenelytra	desert holly	5	1	16
40	Chenopod	Atriplex lentiformis ssp. lentiformis	big saltbush		1	4
41	Chenopod	Atriplex polycarpa	cattle saltbush	99	1	21
42	Chenopod	Chenopodium murale	*nettle-leaved goosefoot	10	1	11
43	Chenopod	Salsola paulsenii	*Paulsen's Russian thistle	50	1	0
44	Chenopod	Suaeda moquinii	bush seepweed	99	1	8
45	Cucurbit	Cucurbita palmata	coyote melon		1	7
46	Euphorbi	Chamaesyce polycarpa	small-seeded spurge	1	2	48
47	Euphorbi	Chamaesyce setiloba	Yuma spurge	10		9
48	Euphorbi	Croton californicus	California croton		1	13
49	Euphorbi	Stillingia spinulosa	annual stillingia		1	7
50	Fabaceae	Astragalus crotalariae	Salton milk-vetch	2	2	4
51	Fabaceae	Astragalus sabulonum	gravel milk-vetch		1	0
52	Fabaceae	Dalea mollissima	downy dalea		1	9
53	Fabaceae	Lupinus arizonicus	Arizona lupine		1	33
54	Fabaceae	Prosopis glandulosa var. torreyana	honey mesquite	99	5	26
55	Fabaceae	Psorothamnus emoryi	Emory's indigo-bush	2	1	25
56	Fabaceae	Psorothamnus spinosus	smoke tree		2	26
57	Geraniac	Erodium cicutarium	*redstem filaree	20	1	33
58	Geraniac	Erodium texanum	Texas filaree		1	14
59	Hydrophy	Nama hispidum var. spathulatum	hispid nama		2	0
60	Loasacea	Petalonyx thurberi ssp. thurberi	Thurber's sandpaper-plant		1	23
61	Malvacea	Sphaeralcea emoryi var. emoryi	Emory's globemallow	3	1	0
62	Malvacea	Sphaeralcea orcuttii	Carrizo mallow		2	0
63	Nyctagin	Abronia villosa var. villosa	hairy sand-verbena	3	1	16
64	Nyctagin	Mirabilis bigelovii var. bigelovii	Bigelow's desert four-o'clock		1	0
65	Onagrace	Camissonia boothii ssp. condensata	Booth's evening primrose	3		34
66	Onagrace	Camissonia brevipes ssp. brevipes	golden sun-cup		1	0
67	Onagrace	Camissonia claviformis ssp. peirsonii	brown-eyed primrose	30	2	36
68	Onagrace	Oenothera deltoides ssp. deltoides	dune primrose		2	9
69	Orobanch	Orobanche cooperi	Cooper's broom-rape		2	5
70	Plantagi	Plantago ovata	desert plantain	99	2	42
71	Polygona	Chorizanthe brevicornu var. brevicornu	brittle spineflower		1	39
72	Polygona	Chorizanthe corrugata	wrinkled spineflower		2	2
73	Polygona	Chorizanthe rigida	devil's spineflower	99	1	20
74	Polygona	Eriogonum deflexum var. deflexum	flat-topped buckwheat	99	1	6
75	Polygona	Eriogonum deserticola	Colorado Desert buckwheat		4	0
76	Polygona	Eriogonum thomasii	Thomas' buckwheat	99	3	29
77	Polygona	Eriogonum trichopes	little desert trumpet	99	1	12
78	Portulac	Calandrinia ambigua	desert red maids		2	5
79	Rafflesi	Pilostyles thurberi	Thurber's pilostyles		3	6
80	Resedace	Oligomeris linifolia	lineleaf whitepuff	99	3	10
81	Solanace	Datura discolor	desert thornapple	3		11
82	Solanace	Lycium fremontii	Fremont box-thorn	2		2
83	Tamarica	Tamarix aphylla	*athel	99	2	2
84	Tamarica	Tamarix ramosissima	*saltcedar	99	3	3
85	Viscacea	Phoradendron californicum	desert mistletoe	99	1	46
86	Zygophyl	Larrea tridentata	creosote bush	99	3	64
87	Ephedrac	Ephedra trifurca	long-leafed ephedra		2	0
88	Cyperace	Scirpus americanus	American tule	99	4	6
89	Liliacea	Dichelostemma capitatum ssp. pauciflorum	few-flowered blue dicks		1	0
90	Liliacea	Hesperocallis undulata	desert lily		1	20
91	Poaceae	Aristida adscensionis	six-weeks three-awn		1	18
92	Poaceae	Distichlis spicata	saltgrass	1		7
93	Poaceae	Phalaris minor	*little-seed canarygrass	50		0
94	Poaceae	Phragmites australis	common reed		1	6
95	Poaceae	Pleuraphis rigida	big galleta		1	54
96	Poaceae	Schismus barbatus	*Mediterranean schismus	99	3	41

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

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• Plants of Southern California: Regional Floras