Flora of San Sebastian Marsh, Imperial County



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% VouchersCollector
8252%Charles Convis
1711%Dean Wm. Taylor
128%A. C. Sanders, P. J. MacKay, Tim Thomas, E. J. Lawlor, et al.
85%Steven R. Hill, K. Kramer
53%T. L. Secrest
158100%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)

#FAMScientific Name(*)Common Name#Pl#V#BD
1AsteraceAmbrosia dumosaburroweed50257
2AsteraceBaccharis emoryiEmory's baccharis 12
3AsteraceBaileya pauciradiataColorado Desert marigold 22
4AsteraceCarthamus tinctorius*safflower 10
5AsteraceDicoria canescensdesert dicoria20310
6AsteraceEncelia farinosabrittlebush1 59
7AsteraceEncelia frutescensbutton encelia99411
8AsteraceGeraea canescenshairy desert-sunflower99412
9AsteraceHymenoclea salsolacheesebush 10
10AsteraceIsocoma acradenia var. eremophilasolitary-leaved alkali goldenbush1067
11AsteraceMalacothrix glabratadesert dandelion 128
12AsteracePalafoxia arida var. aridadesert needle30530
13AsteracePluchea sericeaarrow-weed 211
14AsteracePsathyrotes ramosissimaturtleback 23
15AsteraceRafinesquia neomexicanadesert chicory 139
16AsteraceSonchus asper ssp. asper*prickly sow thistle5 3
17AsteraceStephanomeria pauciflora var. pauciflorawire-lettuce 153
18BoraginaAmsinckia menziesii var. intermediacommon fiddleneck 111
19BoraginaCryptantha angustifolianarrow-leaved cryptantha99329
20BoraginaCryptantha maritimaGuadalupe cryptantha99127
21BoraginaCryptantha micranthapurple-root cryptantha 16
22BoraginaHeliotropium curassavicumseaside heliotrope 11
23BoraginaPectocarya heterocarpachuckwalla pectocarya 412
24BoraginaTiquilia nuttalliiNuttall's coldenia 10
25BoraginaTiquilia palmeriPalmer's coldenia 319
26BoraginaTiquilia plicataplicate coldenia2019
27BrassicaBrassica tournefortii*Asian mustard99257
28BrassicaDithyrea californicaspectacle-pod 111
29BrassicaLepidium lasiocarpum var. lasiocarpumhairy-podded pepper-grass99440
30BrassicaLepidium nitidum var. howelliiHowell's pepper-grass 10
31BrassicaSisymbrium irio*London rocket20115
32BrassicaStreptanthella longirostrislongbeak streptanthella 15
33CapparacCleomella obtusifoliaMojave cleomella 12
34CaryophyAchyronychia cooperifrost mat 211
35ChenopodAllenrolfea occidentalisiodine-bush112
36ChenopodAtriplex canescensfourwing saltbush9910
37ChenopodAtriplex canescens ssp. canescensfour-wing saltbush 215
38ChenopodAtriplex elegans var. fasciculatawheelscale 20
39ChenopodAtriplex hymenelytradesert holly5116
40ChenopodAtriplex lentiformis ssp. lentiformisbig saltbush 14
41ChenopodAtriplex polycarpacattle saltbush99121
42ChenopodChenopodium murale*nettle-leaved goosefoot10111
43ChenopodSalsola paulsenii*Paulsen's Russian thistle5010
44ChenopodSuaeda moquiniibush seepweed9918
45CucurbitCucurbita palmatacoyote melon 17
46EuphorbiChamaesyce polycarpasmall-seeded spurge1248
47EuphorbiChamaesyce setilobaYuma spurge10 9
48EuphorbiCroton californicusCalifornia croton 113
49EuphorbiStillingia spinulosaannual stillingia 17
50FabaceaeAstragalus crotalariaeSalton milk-vetch224
51FabaceaeAstragalus sabulonumgravel milk-vetch 10
52FabaceaeDalea mollissimadowny dalea 19
53FabaceaeLupinus arizonicusArizona lupine 133
54FabaceaeProsopis glandulosa var. torreyanahoney mesquite99526
55FabaceaePsorothamnus emoryiEmory's indigo-bush2125
56FabaceaePsorothamnus spinosussmoke tree 226
57GeraniacErodium cicutarium*redstem filaree20133
58GeraniacErodium texanumTexas filaree 114
59HydrophyNama hispidum var. spathulatumhispid nama 20
60LoasaceaPetalonyx thurberi ssp. thurberiThurber's sandpaper-plant 123
61MalvaceaSphaeralcea emoryi var. emoryiEmory's globemallow310
62MalvaceaSphaeralcea orcuttiiCarrizo mallow 20
63NyctaginAbronia villosa var. villosahairy sand-verbena3116
64NyctaginMirabilis bigelovii var. bigeloviiBigelow's desert four-o'clock 10
65OnagraceCamissonia boothii ssp. condensataBooth's evening primrose3 34
66OnagraceCamissonia brevipes ssp. brevipesgolden sun-cup 10
67OnagraceCamissonia claviformis ssp. peirsoniibrown-eyed primrose30236
68OnagraceOenothera deltoides ssp. deltoidesdune primrose 29
69OrobanchOrobanche cooperiCooper's broom-rape 25
70PlantagiPlantago ovatadesert plantain99242
71PolygonaChorizanthe brevicornu var. brevicornubrittle spineflower 139
72PolygonaChorizanthe corrugatawrinkled spineflower 22
73PolygonaChorizanthe rigidadevil's spineflower99120
74PolygonaEriogonum deflexum var. deflexumflat-topped buckwheat9916
75PolygonaEriogonum deserticolaColorado Desert buckwheat 40
76PolygonaEriogonum thomasiiThomas' buckwheat99329
77PolygonaEriogonum trichopeslittle desert trumpet99112
78PortulacCalandrinia ambiguadesert red maids 25
79RafflesiPilostyles thurberiThurber's pilostyles 36
80ResedaceOligomeris linifolialineleaf whitepuff99310
81SolanaceDatura discolordesert thornapple3 11
82SolanaceLycium fremontiiFremont box-thorn2 2
83TamaricaTamarix aphylla*athel9922
84TamaricaTamarix ramosissima*saltcedar9933
85ViscaceaPhoradendron californicumdesert mistletoe99146
86ZygophylLarrea tridentatacreosote bush99364
87EphedracEphedra trifurcalong-leafed ephedra 20
88CyperaceScirpus americanusAmerican tule9946
89LiliaceaDichelostemma capitatum ssp. pauciflorumfew-flowered blue dicks 10
90LiliaceaHesperocallis undulatadesert lily 120
91PoaceaeAristida adscensionissix-weeks three-awn 118
92PoaceaeDistichlis spicatasaltgrass1 7
93PoaceaePhalaris minor*little-seed canarygrass50 0
94PoaceaePhragmites australiscommon reed 16
95PoaceaePleuraphis rigidabig galleta 154
96PoaceaeSchismus barbatus*Mediterranean schismus99341

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

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Copyright © 2011 by Tom Chester, Mike Crouse and Bill Sullivan.
Permission is freely granted to reproduce any or all of this page as long as credit is given to us at this source:
Comments and feedback: Tom Chester
Last update: 20 December 2011(