Flora of Fossil Canyon, Coyote Mountains, Imperial County

Left: Parish's desert-thorn, Lycium parishii; Middle: Panorama of three camera images; Right: Unusual five spot, Eremalche rotundifolia, without any spots.
Pictures taken 13 February 2011 in Fossil Canyon by Tom Chester. Click on pictures to get larger versions.



This checklist is a start at a flora of Fossil Canyon, Coyote Mountains.

The Coyote Mountains are in southwest Imperial County, just north of the town of Ocotillo; see area locator map. Fossil Canyon is a canyon on the south side of the Coyote Mountains, in between the Domelands to the West and Painted Gorge to the East, shown on the following map:

As shown on the above map, we have done two floral surveys in Fossil Canyon, along the solid blue line. The first survey was done on 23 December 2010, between the two green crosses, as indicated on the map, by Tom Chester, Mike Crouse and Pam Pallette. The second survey was done on 13 February 2011 between the two red crosses shown on the map, by Tom Chester, RT Hawke, Tommy Stoughton and William Schlegel.

The checklist below gives the maximum number of plants found in either survey, up to a maximum of 99 plants.

The vouchered species on this checklist come from a search on 15 February 2011 of the Consortium of California Herbaria.

The Consortium records were searched for vouchers from Imperial County with the term Fossil, Shell or Alverson in their locality field. (This canyon has also been known as Shell Canyon and Alverson Canyon.)

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

Vouchers determined just to genus were also eliminated.

The final voucher list contained 79 vouchers of 42 taxa.

The dominant collector by far was Andy Sanders, with 46 vouchers, 58% of the total, most of which he collected with B. Pitzer, D. Charlton, R. Kniffen, J. Stewart, Howie Weir, and D. E. Bramlet on 9 March 1986. June Latting was next, with 17 vouchers, 22% of the total, from 5 April 1978. S. Granger collected 5 vouchers, 6% of the total, in March 1979. Just 11 vouchers, 14% of the total, were collected by ten other sets of collectors.

The total checklist below contains 101 taxa, 91 from our surveys (33 with vouchers and 58 without vouchers) plus an additional nine taxa solely from vouchers that we did not find, or at least could not positively identify, in our surveys.

The checklist below also gives the number of our 228 survey areas in southern California in which each taxon was found. We have never recorded four of the species in the checklist in any of our 228 survey areas: Eucnide rupestris, Nemacladus glanduliferus var. orientalis, Nemacladus tenuis var. tenuis, and Petalonyx linearis. We have seen Nemacladus tenuis var. tenuis in the field, but not on any formally-surveyed area. We did not see any of these four vouchered species here, although we did see a Nemacladus species in bud that might have been one of these.

If anyone knows where any of those four species are hiding here, we would appreciate knowing.

Three other species have only been recorded in the surveys here, among those 228 survey areas: Lycium parishii; Caesalpinia virgata; and Chamaesyce pediculifera. The main reason for this uniqueness is that we have conducted few surveys in Imperial County or southeastern San Diego County, where these species live.

This canyon was also striking for the large number of plants of Phacelia pedicellata and Mohavea confertiflora found here. Both of these taxa usually appear in much smaller numbers in other areas.

See Flora of Ocotillo / Coyote Mountains Area for voucher records for a larger area around Fossil Canyon.

Checklist for Fossil Canyon, Coyote Mountains

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.

The column titled #Pl gives the maximum number of plants found in either of our surveys, up to a maximum of 99 plants.

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

The column titled #All gives the number of survey areas and floras in southern California 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.

A "~" appears in the #Pl for Loeseliastrum matthewsii, since we observed only dead Loeseliastrum plants on our survey, and could not then determine whether they were this species of L. schottii. We have simply placed our dead plants under the vouchered species name.

Similarly, we observed only young plants that were probably Eucrypta micrantha, and qualified that number of plants with a ~.

We observed ~10 plants of Nemacladus in bud, but could not determine them to one of the three species vouchered from here, and hence those observations do not appear in the checklist below.

See Flora of Ocotillo / Coyote Mountains Area for voucher records for a larger area around Fossil Canyon.

Version for printing, without lines and other text on this page: html (8 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)

Checklist updated to include species from surrounding areas, but the text above has not yet been updated!!

#FamScientific Name(*)Common Name#VDmWsFC
1PteCheilanthes parryiwoolly lipfern124  
2CupJuniperus californicaCalifornia juniper1   
3EphEphedra californicadesert tea  1 
4EphEphedra sp. (2 lv'd)2 lv'd ephedra  1 
5EphEphedra trifurcalong-leafed ephedra4 5 
6AcaJusticia californicachuparosa11   
7AizTrianthema portulacastrumhorse-purslane3   
8AmaTidestromia oblongifoliaArizona honeysweet9222
9AnaRhus ovatasugar bush1   
10AscAsclepias albicanswhite-stemmed milkweed31  
11AscAsclepias subulatarush milkweed150  
12AscCynanchum utahenseUtah vine milkweed1   
13AstAmbrosia dumosaburroweed21999999
14AstAmbrosia ilicifoliaholly-leaved burbush1   
15AstBaccharis brachyphyllashort-leaved baccharis15  
16AstBaileya pauciradiataColorado Desert marigold3   
17AstBebbia juncea var. asperasweetbush799 99
18AstCalycoseris wrightiiwhite tackstem55  
19AstChaenactis carphoclinia var. carphocliniapebble pincushion1099 99
20AstChaenactis stevioidesdesert pincushion7999999
21AstEncelia farinosabrittlebush8992099
22AstEncelia frutescensbutton encelia15 992
23AstEriophyllum wallaceiWallace's woolly daisy1   
24AstFilago arizonicaArizona herba impia   50
25AstFilago depressadwarf filago1   
26AstGeraea canescenshairy desert-sunflower10501050
27AstGeraea viscidasticky geraea1   
28AstGnaphalium bicolorbicolored everlasting1   
29AstHymenoclea salsolacheesebush5 99 
30AstIsocoma acradenia var. eremophilasolitary-leaved alkali goldenbush5   
31AstMalacothrix glabratadesert dandelion4   
32AstMalperia tenuisbrown turbans660 50
33AstMonoptilon bellioidesdesert star1620 99
34AstPalafoxia arida var. aridadesert needle1529910
35AstPectis papposa var. papposachinch-weed4   
36AstPerityle emoryiEmory's rock-daisy1250 99
37AstPeucephyllum schottiipygmy-cedar23 1
38AstPleurocoronis plurisetaarrow-leaf1050 99
39AstPsathyrotes ramosissimaturtleback47205
40AstRafinesquia neomexicanadesert chicory610140
41AstSenecio mohavensisMojave ragwort93 99
42AstSenecio vulgaris*common groundsel1   
43AstStephanomeria pauciflorawire-lettuce1991010
44AstStylocline micropoidesdesert nest straw 1  
45AstTrichoptilium incisumyellow-head610 5
46AstTrixis californica var. californicaCalifornia trixis1   
47AstViguiera parishiiParish's viguiera1   
48BigChilopsis linearis ssp. arcuatadesert-willow1   
49BorCryptantha angustifolianarrow-leaved cryptantha16999999
50BorCryptantha barbigerabearded cryptantha 5  
51BorCryptantha costataribbed cryptantha1   
52BorCryptantha decipiensgravel cryptantha1   
53BorCryptantha holopterawinged cryptantha5  V
54BorCryptantha maritimaGuadalupe cryptantha1299 99
55BorCryptantha micranthapurple-root cryptantha2   
56BorCryptantha pterocaryawing-nut cryptantha   10
57BorCryptantha pterocarya var. cyclopteraTucson wing-nut cryptantha1   
58BorCryptantha racemosabushy cryptantha910 V
59BorPectocarya heterocarpachuckwalla pectocarya32  
60BorPectocarya peninsularisBaja pectocarya1   
61BorPectocarya platycarpabroad-fruited combseed1   
62BorPectocarya recurvatacurvenut combseed 50 2
63BorPectocarya setosamoth combseed1   
64BorPlagiobothrys jonesiiJones' popcorn flower2   
65BorTiquilia palmeriPalmer's coldenia13599 
66BorTiquilia plicataplicate coldenia1 5 
67BraArabis pulchra var. gracilisslender & beautiful rock-cress1   
68BraBrassica tournefortii*Asian mustard499991
69BraDescurainia pinnatawestern tansy-mustard1   
70BraDithyrea californicaspectacle-pod23  
71BraDraba cuneifoliawedge-leaved draba 2  
72BraLepidium fremontii var. fremontiidesert pepper-grass2   
73BraLepidium lasiocarpum var. lasiocarpumhairy-podded pepper-grass3992040
74BraSisymbrium irio*London rocket150  
75BraSisymbrium orientale*Oriental mustard1   
76BraStreptanthella longirostrislongbeak streptanthella5   
77CacEchinocactus polycephalus var. polycephaluscottontop cactus 15  
78CacMammillaria tetrancistrafish-hook cactus 4  
79CacOpuntia basilaris var. basilarisbeavertail cactus238 5
80CacOpuntia bigeloviiteddy-bear cholla  1 
81CacOpuntia echinocarpasilver cholla12051
82CacOpuntia wolfiiWolf's cholla699 4
83CamNemacladus glanduliferusglandular nemacladus2   
84CamNemacladus glanduliferus var. glanduliferusglandular nemacladus   10
85CamNemacladus glanduliferus var. orientaliseastern glandular nemacladus2  V
86CamNemacladus tenuis var. tenuisdesert threadplant1  V
87CapCleomella obtusifoliaMojave cleomella7   
88CarAchyronychia cooperifrost mat9 202
89CheAtriplex canescensfourwing saltbush3   
90CheAtriplex elegans var. fasciculatawheelscale130  
91CheAtriplex hymenelytradesert holly2099 99
92CheAtriplex lentiformisbig saltbush1   
93CheAtriplex polycarpacattle saltbush150  
94CheChenopodium murale*nettle-leaved goosefoot2   
95CheChenopodium pratericolameadow goosefoot1   
96CheMonolepis nuttallianaNuttall's poverty weed2   
97CheSalsola paulsenii*Paulsen's Russian thistle120  
98CheSuaeda moquiniibush seepweed1   
99CucCucurbita foetidissimastinking gourd1   
100CucCucurbita palmatacoyote melon  3 
101CusCuscuta sp.dodder  1 
102EupChamaesyce melanadeniared-gland spurge2   
103EupChamaesyce micromeraSonoran spurge5   
104EupChamaesyce parishiiParish's spurge1   
105EupChamaesyce pediculiferaCarrizo Mountain spurge8  30
106EupChamaesyce polycarpasmall-seeded spurge14509930
107EupChamaesyce setilobastarfish (Yuma) spurge5  10
108EupCroton californicusCalifornia croton810 3
109EupDitaxis lanceolatanarrowleaf ditaxis71 5
110EupDitaxis neomexicanaNew Mexico ditaxis3  V
111EupStillingia linearifolialinear-leaved stillingia3 1 
112EupStillingia spinulosaannual stillingia5 10 
113FabAcacia greggiicatclaw315150
114FabAstragalus aridusannual desert milk-vetch2   
115FabAstragalus crotalariaeSalton milk-vetch3   
116FabAstragalus insularis var. harwoodiiHarwood's milk-vetch1   
117FabCaesalpinia virgatawand holdback221 99
118FabDalea mollissilky dalea3   
119FabDalea mollissimadowny dalea12521
120FabHoffmannseggia glaucahog potato4   
121FabLotus haydoniipygmy lotus1   
122FabLotus heermannii var. heermanniisilky lotus1   
123FabLotus salsuginosus var. brevivexillusshort-bannered coastal lotus3  5
124FabLotus strigosusstrigose lotus1010 30
125FabLupinus arizonicusArizona lupine350599
126FabLupinus concinnusbajada lupine 2  
127FabLupinus excubitus var. mediusMountain Springs bush lupine1   
128FabOlneya tesotaironwood1   
129FabProsopis glandulosa var. torreyanahoney mesquite350 1
130FabPsorothamnus emoryiEmory's indigo-bush145507
131FabPsorothamnus polydeniusNevada indigo-bush399  
132FabPsorothamnus schottiiindigo bush730201
133FabPsorothamnus spinosussmoke tree9 5050
134FabSenna armataspiny senna1   
135FouFouquieria splendens ssp. splendensocotillo5999999
136GerErodium cicutarium*redstem filaree 99  
137GerErodium texanumTexas filaree 5  
138HydEucrypta micranthadesert eucrypta4  3
139HydNama demissum var. demissumpurple mat1   
140HydNama hispidum var. spathulatumhispid nama2   
141HydPhacelia crenulataheliotrope phacelia   V
142HydPhacelia crenulata var. ambiguaheliotrope phacelia2   
143HydPhacelia crenulata var. minutifloralittle-flowered heliotrope phacelia999 10
144HydPhacelia distanscommon phacelia1   
145HydPhacelia ivesiana var. pediculoidesIves' phacelia2   
146HydPhacelia neglectaalkali phacelia3   
147HydPhacelia pachyphyllathick-leafed phacelia6   
148HydPhacelia pedicellatapedicellate phacelia6  99
149KraKrameria erectaPima rhatany115  
150KraKrameria grayiwhite rhatany599102
151LamHyptis emoryidesert-lavender920199
152LamSalvia columbariaechia1   
153LoaEucnide rupestrisrock nettle3  V
154LoaMentzelia albicauliswhite-stemmed blazing star5   
155LoaMentzelia desertorumdesert blazing star1   
156LoaMentzelia hirsutissimahairy stickleaf1   
157LoaMentzelia involucratabracted blazing star810 50
158LoaMentzelia veatchianaVeatch's blazing star1   
159LoaPetalonyx linearisnarrow-leaf sandpaper-plant1  V
160LoaPetalonyx thurberi ssp. thurberiThurber's sandpaper-plant2 7 
161MalEremalche rotundifoliadesert five-spot4201050
162MalHibiscus denudatusrock hibiscus72 7
163MalHorsfordia newberryiNewberry's velvet mallow5  15
164MalSphaeralcea ambiguaapricot mallow   1
165MalSphaeralcea ambigua var. rosacearosy apricot mallow10   
166MalSphaeralcea angustifoliacopper globemallow1   
167MalSphaeralcea emoryi var. emoryiEmory's globemallow2   
168MalSphaeralcea orcuttiiCarrizo mallow4   
169NycAbronia villosa var. villosahairy sand-verbena71099 
170NycAllionia incarnatatrailing four o'clock61 1
171NycBoerhavia intermediafivewing spiderling1   
172NycBoerhavia wrightiiWright's spiderling3   
173NycMirabilis bigelovii var. bigeloviiBigelow's desert four-o'clock1   
174NycMirabilis bigelovii var. retrorsaBigelow's desert four-o'clock215 10
175NycMirabilis tenuilobaslender-lobed four o'clock5   
176OnaCamissonia boothii ssp. condensataBooth's evening primrose1250 30
177OnaCamissonia boothii ssp. decorticansBooth's evening primrose2   
178OnaCamissonia brevipesyellow cups1   
179OnaCamissonia brevipes ssp. arizonicaArizona sun-cup1   
180OnaCamissonia californicaCalifornia suncup10995099
181OnaCamissonia cardiophylla ssp. cardiophyllaheartleaf sun-cup1220 99
182OnaCamissonia chamaenerioideslong-fruit suncup5  3
183OnaCamissonia claviformisbrown-eyed primrose3   
184OnaCamissonia claviformis ssp. claviformisbrown-eyed primrose1   
185OnaCamissonia claviformis ssp. peirsoniibrown-eyed primrose21999999
186OroOrobanche cooperiCooper's broom-rape3  2
187PapArgemone munitaprickly poppy4   
188PapEschscholzia minutiflora ssp. minutiflorasmall-flowered poppy44 20
189PapEschscholzia parishiiParish's poppy3502099
190PlaPlantago ovatadesert plantain7992099
191PolGilia latifoliabroad-leaf gilia799199
192PolGilia stellatastar gilia4  1
193PolLangloisia setosissima ssp. setosissimabristly langloisia7  10
194PolLinanthus aureus ssp. decorusgolden linanthus1   
195PolLinanthus jonesiiJones' linanthus4  V
196PolLoeseliastrum matthewsiidesert calico2  V
197PolLoeseliastrum schottiiSchott's calico2   
198PolChorizanthe brevicornu var. brevicornubrittle spineflower450 30
199PolChorizanthe corrugatawrinkled spineflower8   
200PolChorizanthe rigidadevil's spineflower999 5
201PolEriogonum deflexum var. deflexumflat-topped buckwheat   5
202PolEriogonum deflexum var. rectumflat-topped buckwheat1   
203PolEriogonum inflatumdesert trumpet630210
204PolEriogonum reniformekidney-leaf buckwheat4   
205PolEriogonum thomasiiThomas' buckwheat750 99
206PolEriogonum trichopeslittle desert trumpet399  
207PorCalandrinia ambiguadesert red maids5   
208RafPilostyles thurberiThurber's pilostyles9   
209ResOligomeris linifolialineleaf whitepuff699 2
210RubGalium stellatum var. eremicumstar-flowered bedstraw1   
211ScrAntirrhinum filipesdesert twining snapdragon1   
212ScrMimulus bigelovii var. bigeloviiBigelow's monkeyflower4   
213ScrMimulus fremontiiFremont's monkeyflower1   
214ScrMimulus guttatuscommon monkeyflower1   
215ScrMohavea confertifloraghost flower930 99
216ScrVeronica peregrina ssp. xalapensispurslane speedwell1   
217SimCastela emoryicrucifixion thorn13   
218SimSimmondsia chinensisjojoba2   
219SolDatura discolordesert thornapple1 51
220SolDatura wrightiisacred datura1   
221SolLycium fremontiiFremont box-thorn 15 6
222SolLycium parishiiParish's desert-thorn3  6
223SolNicotiana obtusifoliadesert tobacco45 3
224SolPhysalis crassifoliathick-leaved ground cherry2 310
225TamTamarix ramosissima*saltcedar1  5
226UrtParietaria hespera var. hesperapellitory1   
227VisPhoradendron californicumdesert mistletoe 1 10
228VisPhoradendron densumdense mistletoe1   
229ZygFagonia laevisCalifornia fagonia10   
230ZygFagonia pachyacanthasticky fagonia1399199
231ZygKallstroemia californicaCalifornia caltrop3   
232ZygLarrea tridentatacreosote bush13999999
233JunJuncus bufonius var. bufoniustoad rush1   
234LilAgave deserti var. desertidesert agave 10 1
235LilHesperocallis undulatadesert lily11 50 
236PoaAristida adscensionissix-weeks three-awn950 99
237PoaAristida californica var. californicaCalifornia three-awn1   
238PoaAristida purpurea var. nealleyiNealley three-awn2   
239PoaAvena barbata*slender wild oats1   
240PoaBouteloua aristidoides var. aristidoidesneedle grama1   
241PoaBouteloua barbata var. barbatasix-weeks grama4   
242PoaBromus madritensis ssp. rubens*red brome 80 1
243PoaErioneuron pulchellumfluff grass1   
244PoaLeptochloa uninerviaMexican sprangletop1   
245PoaPleuraphis rigidabig galleta430  
246PoaSchismus barbatus*Mediterranean schismus 999930

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, RT Hawke, Tommy Stoughton, William Schlegel, Mike Crouse and Pam Pallette.
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: 19 March 2012