Flora of The Potrero, Anza-Borrego Desert State Park


Introduction
Checklist


Introduction

Diana Lindsay, in Anza-Borrego A to Z, says that the Potrero Wash "begins at the top of Mt. Laguna and drains into Vallecito Valley and then into Vallecito Creek. Potrero is Spanish for a pasture or meadow and may have referred to the drainage into Vallecito Valley" (pp. 276-277).

A map of the Potrero area, showing points where species were recorded by us, iNat observations with good accuracy, and vouchers with good accuracy, is shown in Fig. 1.


Fig. 1. Map showing the Potrero area, along with locations where species were recorded by us, iNat observations with good accuracy, and vouchers with good accuracy. See also a map showing the source of each point (some of the Tom Chester (TJC) points were originally found by Walt Fidler (WF).

See Fred Melgert and Carla Hoegen's The Potrero Loop, and The Potrero West Loop, for information about this area, including many pictures and a plant list. For Google Earth images of this area, see also Abutilon palmeri, a species only found here in San Diego County.

This is a checklist for the lower section of the Potrero, that part reached from S2, below approximately 3000 feet elevation, made from field surveys and vouchers. iNaturalist was searched, but contributed no additional taxa. The iNat observations are almost entirely from Carla Hoegen and Fred Melgert from their field surveys here, and were already included in their plant list for the area.

The field surveys done for this flora are:

As of 3 April 2019, the field surveys found 270 taxa.

Vouchers were searched at the Consortium of California Herbaria on 8 November 2018 for vouchers with a locality of "Potrero", and separately for georeferenced vouchers in the area of 32.87 to 32.98° N. latitude and -116.40 to -116.32° E. Longitude. The locality was examined, and vouchers not clearly in the lower Potrero were tossed. No vouchers from Vallecito Valley or the hills south of the Vallecito State Station were kept, since those are in Vallecito Hills flora.

The retained vouchers were of 118 taxa.

As of 3 April 2019, the combined list has 284 taxa.

Checklist for The Potrero

See:

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

The column with label BW links to the photo gallery page for each species at Fred Melgert and Carla Hoegen's BorregoWildflowers site.

The column labeled #Pls gives a minimum estimate of the number of plants from our surveys, up to a maximum of 99 plants. If the column contains FC, it was a species observed by Carla Hoegen and Fred Melgert with no abundance estimate. A V in the column indicates a vouchered species not yet seen by any of the authors.

Version for printing, without 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)

#FamilScientific Name
Link goes to the Jepson eflora
(*)Common Name
Link goes to Calphotos
BW
#Pls
Lycophytes
1SelagSelaginella eremophiladesert spike-mossBW30
Ferns
2PteriCheilanthes covilleibeady lipfernBW6
3PteriCheilanthes parryiwoolly lipfernBW99
4PteriCheilanthes viscidasticky lipfernBW2
5PteriPellaea mucronata var. mucronatabird's-foot fernBW5
Gymnosperms
6CupreJuniperus californicaCalifornia juniperBWV
7EphedEphedra asperaMormon teaBW99
Eudicots
8AcantJusticia californicachuparosaBW99
9AmaraAmaranthus fimbriatusfringed amaranthBW99
10AnacaRhus ovatasugar bushBW30
11ApiacApiastrum angustifoliumwild celeryBW~1
12ApiacTauschia argutasouthern tauschiaBW6
13ApocyAsclepias albicanswhite-stemmed milkweedBW2
14ApocyFunastrum cynanchoides var. hartwegiiclimbing milkweedBW99
15AsterAcamptopappus sphaerocephalus var. sphaerocephalusgoldenheadBW99
16AsterAdenophyllum porophylloidesSan Felipe dogweedBW34
17AsterAmbrosia dumosaburroweedBW99
18AsterAmbrosia salsola var. salsolacheesebushBW99
19AsterArtemisia ludoviciana ssp. incomptamountain mugwortBW32
20AsterBaccharis brachyphyllashort-leaved baccharisBW1?
21AsterBaccharis sergiloidesdesert baccharisBW23
22AsterBahiopsis parishiiParish's goldeneyeBW99
23AsterBebbia juncea var. asperasweetbushBW33
24AsterBrickellia atractyloides var. argutaCalifornia spear-leaved brickelliaBWV
25AsterBrickellia atractyloides var. odontolepisCalifornia spear-leaved brickelliaBW4
26AsterBrickellia desertorumdesert brickelliaBW~14
27AsterBrickellia frutescensshrubby brickelliaBW9
28AsterChaenactis fremontiiFremont pincushionBW99
29AsterChaenactis stevioidesdesert pincushionBW11
30AsterEncelia actoniActon enceliaBW10
31AsterEncelia farinosa var. farinosabrittlebushBW99
32AsterEncelia frutescensbutton enceliaBW1
33AsterEricameria brachylepisboundary goldenbushBW1
34AsterEricameria linearifolianarrowleaf goldenbushBW4
35AsterEriophyllum lanosumwhite easter-bonnetsBWFC
36AsterEriophyllum pringleiPringle's woolly sunflowerBW99
37AsterEriophyllum wallacei var. intermediaWallace's woolly daisyBW99
38AsterEriophyllum wallacei var. rubellumWallace's woolly daisyBW99
39AsterEriophyllum wallacei var. wallaceiWallace's woolly daisyBW99
40AsterGutierrezia sarothraematchweedBW25
41AsterIsocoma acradenia var. eremophilatoothed-leaved alkali goldenbushBW1
42AsterLasthenia gracilisgoldfieldsBW99
43AsterLayia glandulosawhite tidy-tipsBW99
44AsterLeptosyne californicaCalifornia coreopsisBW99
45AsterLogfia arizonicaArizona herba impiaBWFC
46AsterLogfia depressadwarf filagoBW2
47AsterLogfia filaginoidesCalifornia filagoBW99
48AsterMalacothrix glabratadesert dandelionBW99
49AsterMalacothrix stebbinsiiStebbins' malacothrixBW23
50AsterMonoptilon bellioidesdesert starBW99
51AsterPalafoxia arida var. aridaSpanish needleBW1
52AsterPectis papposa var. papposachinch-weedBW99
53AsterPerityle emoryiEmory's rock-daisyBW99
54AsterPleurocoronis plurisetaarrow-leafBW99
55AsterPorophyllum gracileodoraBW26
56AsterRafinesquia neomexicanadesert chicoryBW99
57AsterSenecio californicusCalifornia groundselBW99
58AsterSenecio flaccidus var. monoensisMono ragwortBW3
59AsterSenecio mohavensisMojave ragwortBW99
60AsterSonchus asper ssp. asper*prickly sow thistleBW2
61AsterStephanomeria exigua ssp. exiguaslender wreathplantBW99
62AsterStephanomeria pauciflorawire-lettuceBW99
63AsterStylocline gnaphaloideseverlasting nest-strawBWFC
64AsterStylocline intertextatangled nest-straw 10
65AsterTrixis californica var. californicaCalifornia trixisBW99
66AsterUropappus lindleyisilver puffsBW22
67BignoChilopsis linearis ssp. arcuatadesert-willowBW99
68BoragAmsinckia intermediacommon fiddleneckBW99
69BoragAmsinckia tessellata var. tessellatabristly fiddleneckBW17
70BoragCryptantha angustifolianarrow-leaved cryptanthaBW99
71BoragCryptantha barbigera var. barbigerabearded cryptanthaBW99
72BoragCryptantha decipiensgravel cryptantha 2
73BoragCryptantha intermedia var. intermediapopcorn flowerBWV
74BoragCryptantha maritimaGuadalupe cryptanthaBW2
75BoragCryptantha micrantha var. lepidamountain red-root cryptanthaBW99
76BoragCryptantha micrantha var. micranthared-root cryptanthaBW99
77BoragCryptantha nevadensis var. nevadensisNevada cryptanthaBW91
78BoragCryptantha pterocarya var. pterocaryawing-nut cryptanthaBW67
79BoragCryptantha utahensisscented cryptanthaBW22
80BoragEmmenanthe penduliflora var. penduliflorawhispering bellsBW99
81BoragEriodictyon trichocalyx var. lanatumsmoothleaf yerba santaBW60
82BoragEucrypta chrysanthemifolia var. bipinnatifidaeucryptaBW99
83BoragEucrypta micranthadesert eucryptaBW99
84BoragHeliotropium curassavicum var. oculatumseaside heliotropeBW99
85BoragNama demissa var. demissapurple matBW99
86BoragPectocarya anisocarpaBlair Valley combseed 99
87BoragPectocarya heterocarpachuckwalla pectocaryaBW99
88BoragPectocarya linearis ssp. feroculaslender combseedBW50
89BoragPectocarya penicillatacombseedBW1
90BoragPectocarya peninsularisBaja pectocaryaBW99
91BoragPectocarya platycarpabroad-fruited combseedBW29
92BoragPectocarya recurvatacurvenut combseedBW99
93BoragPhacelia brachylobashort-lobed phaceliaBWFC
94BoragPhacelia cicutaria var. hispidacaterpillar phaceliaBW99
95BoragPhacelia crenulata var. minutifloralittle-flowered heliotrope phaceliaBW99
96BoragPhacelia distanscommon phaceliaBW99
97BoragPhacelia minorwild canterbury bellsBW99
98BoragPhacelia pedicellatapedicellate phaceliaBW99
99BoragPholistoma auritum var. arizonicumArizona fiesta flowerBW99
100BoragPlagiobothrys arizonicusArizona popcorn flowerBW99
101BrassBoechera perennansperennial rock-cressBWV
102BrassBrassica tournefortii*Sahara mustardBW99
103BrassCaulanthus cooperiCooper's jewel-flowerBW33
104BrassCaulanthus lasiophyllusCalifornia mustardBW99
105BrassDescurainia pinnatawestern tansy-mustardBW99
106BrassDraba cuneifoliawedge-leaved drabaBW23
107BrassLepidium lasiocarpum ssp. lasiocarpumhairy-podded pepper-grassBW99
108BrassLyrocarpa coulteriCoulter's lyrepodBW4
109BrassSisymbrium altissimum*tumble-mustardBW31
110BrassSisymbrium irio*London rocketBW99
111BrassSisymbrium orientale*Oriental mustardBW40
112BrassThysanocarpus curvipes ssp. eradiatusfringe-podBW78
113BrassTropidocarpum gracileslender tropidocarpumBW72
114CactaCylindropuntia bigeloviiteddy-bear chollaBW99
115CactaCylindropuntia ganderiGander's chollaBW99
116CactaEchinocereus engelmanniiEngelmann's hedgehog cactusBW99
117CactaFerocactus cylindraceusCalifornia barrel cactusBW99
118CactaMammillaria dioicaCalifornia fish-hook cactusBW2
119CactaMammillaria tetrancistradesert fish-hook cactusBW4
120CactaOpuntia basilaris var. basilarisbeavertail cactusBW99
121CactaOpuntia phaeacanthadesert prickly-pearBW2
122CampaNemacladus glanduliferusglandular nemacladusBW53
123CampaNemacladus longiflorus var. breviflorusthread plantBW30
124CampaNemacladus orientaliseastern glandular nemacladusBWFC
125CampaNemacladus rubescensdesert nemacladusBW99
126CampaNemacladus sigmoideussmall-flowered nemacladusBWFC
127CaryoAchyronychia cooperifrost matBWFC
128CaryoLoeflingia squarrosaspreading loeflingiaBW99
129ChenoAtriplex canescens var. canescensfour-wing saltbushBW99
130ChenoAtriplex lentiformis ssp. lentiformisbig saltbushBW99
131ChenoAtriplex polycarpacattle saltbushBW99
132ChenoChenopodium californicumCalifornia goosefootBW30
133ChenoChenopodium fremontiiFremont's goosefootBWFC
134ChenoChenopodium murale*nettle-leaved goosefootBW~1
135ChenoSalsola tragus*Russian thistleBW1
136ChenoSuaeda nigrabush seepweedBW99
137ConvoCuscuta denticulatadesert dodderBW40
138CrassCrassula connatapygmy-weedBW99
139CrassDudleya arizonicaArizona chalk dudleyaBW20
140CucurCucurbita palmatacoyote melonBW6
141EricaArctostaphylos glaucabigberry manzanitaBW2
142EuphoBernardia incanawestern bernardiaBW5
143EuphoChamaesyce albomarginatarattlesnake weedBW1
144EuphoChamaesyce melanadeniared-gland spurgeBW20
145EuphoChamaesyce polycarpasmall-seeded spurgeBW99
146EuphoCroton californicusCalifornia crotonBW40
147EuphoDitaxis lanceolatanarrowleaf ditaxisBW86
148EuphoDitaxis neomexicanaNew Mexico ditaxisBW4
149EuphoStillingia linearifolialinear-leaved stillingiaBW99
150FabacAcmispon glaber var. brevialatusshort-winged deerweedBW99
151FabacAcmispon haydoniipygmy lotusBWV
152FabacAcmispon heermannii var. heermanniisilky lotusBWV
153FabacAcmispon maritimus var. brevivexillusshort-bannered coastal lotusBW8
154FabacAcmispon rigidusdesert lotusBW67
155FabacAcmispon strigosusstrigose lotusBW99
156FabacAstragalus didymocarpus var. dispermusdwarf white milk-vetchBW7
157FabacAstragalus nuttallianus var. imperfectusturkey-peasBW2
158FabacDalea mollissilky daleaBWV
159FabacLupinus bicolordwarf lupineBW38
160FabacLupinus concinnusbajada lupineBW99
161FabacLupinus excubitus var. mediusMountain Springs bush lupineBW64
162FabacLupinus sparsiflorusCoulter's lupineBW51
163FabacProsopis glandulosa var. torreyanahoney mesquiteBW99
164FabacPsorothamnus schottiiindigo bushBW99
165FabacSenegalia greggiicatclawBW99
166FagacQuercus cornelius-mulleridesert scrub oakBW10
167FouquFouquieria splendens ssp. splendensocotilloBW99
168GeranErodium cicutarium*redstem filareeBW99
169GeranErodium texanumTexas filareeBW3
170KrameKrameria bicolorwhite rhatanyBW99
171KrameKrameria erectaPima rhatanyBW36
172LamiaHyptis emoryidesert-lavenderBW99
173LamiaSalvia apianawhite sageBW99
174LamiaSalvia carduaceathistle sageBWV
175LamiaSalvia columbariaechiaBW99
176LoasaMentzelia albicauliswhite-stemmed blazing starBW99
177LoasaMentzelia hirsutissimahairy stickleafBW99
178LoasaPetalonyx thurberi ssp. thurberiThurber's sandpaper-plantBW99
179MalvaAbutilon palmeriPalmer's abutilon 99
180MalvaEremalche exiliswhite mallowBW3
181MalvaHibiscus denudatusrock hibiscusBW2
182MalvaHorsfordia alatapink velvet mallowBW99
183MalvaMalva parviflora*cheeseweedBW1
184MalvaSphaeralcea ambigua var. rosacearosy apricot mallowBW19
185MalvaSphaeralcea ambigua var. rugosadesert globemallowBW99
186MartyProboscidea althaeifoliadesert unicorn-plantBW5
187MontiCalyptridium monandrumsand cressBW99
188NyctaAbronia villosa var. villosahairy sand-verbenaBW99
189NyctaAllionia incarnata var. villosalarge-flowered trailing four o'clockBWFC
190NyctaBoerhavia coccineascarlet spiderlingBW31
191NyctaMirabilis laevis var. retrorsaBigelow's desert four-o'clockBW99
192NyctaMirabilis laevis var. villosaBigelow's desert four-o'clockBWV
193OnagrCamissoniopsis ignotaJurupa Hills suncupsBWFC
194OnagrCamissoniopsis pallida ssp. pallidapale suncupBW99
195OnagrChylismia claviformis ssp. peirsoniibrown-eyed primroseBW99
196OnagrEpilobium canum ssp. latifoliummountain California-fuchsiaBW15
197OnagrEremothera boothii ssp. condensataBooth's evening primroseBW1
198OnagrEremothera chamaenerioideslong-fruit suncupBW99
199OnagrEulobus californicusCalifornia suncupBW99
200OrobaCastilleja exserta ssp. exsertapurple owl's-cloverBW2
201OrobaCastilleja foliolosawoolly Indian paintbrushBW8
202PapavEschscholzia californicaCalifornia poppyBW3
203PapavEschscholzia minutiflora ssp. minutiflorasmall-flowered poppyBW99
204PapavPlatystemon californicuscream cupsBW1
205PhrymMimulus aurantiacus var. ariduslow bush monkeyflowerBWV
206PhrymMimulus bigelovii var. bigeloviiBigelow's monkeyflowerBW29
207PlantAntirrhinum filipesdesert twining snapdragonBW11
208PlantKeckiella antirrhinoides var. microphyllalittle-leaved chaparral beardtongueBW6
209PlantPenstemon clevelandii var. clevelandiiCleveland's beardtongueBW21
210PlantPlantago ovatadesert plantainBW1
211PlantPlantago patagonicaPatagonia plantainBW4
212PolemEriastrum diffusumminiature woolly-starBW7
213PolemEriastrum eremicum ssp. eremicumdesert woolly-starBW42
214PolemGilia capitata ssp. abrotanifoliaglobe giliaBW3
215PolemGilia diegensiscoastal giliaBWFC
216PolemGilia stellatastar giliaBW99
217PolemLeptosiphon aureus ssp. aureusgolden linanthusBW99
218PolemLeptosiphon lemmoniiLemmon's linanthusBW99
219PolemLinanthus dichotomus ssp. pattersoniievening-snow 99
220PolemLinanthus maculatus ssp. emaculatusJacumba Mountains linanthusBW99
221PolemLinanthus pungensgranite prickly phloxBWV
222PolemLoeseliastrum matthewsiidesert calicoBWFC
223PolemLoeseliastrum schottiiSchott's calicoBW99
224PolygChorizanthe brevicornu var. brevicornubrittle spineflowerBW6
225PolygChorizanthe fimbriata var. laciniatalace-fringed spineflowerBWFC
226PolygEriogonum davidsoniiDavidson's buckwheatBW3
227PolygEriogonum elongatum var. elongatumlong-stemmed buckwheatBW2
228PolygEriogonum fasciculatum var. polifoliumCalifornia buckwheatBW99
229PolygEriogonum inflatumdesert trumpetBW99
230PolygEriogonum maculatumspotted buckwheatBWFC
231PolygEriogonum plumatellayucca buckwheatBW99
232PolygEriogonum reniformekidney-leaf buckwheatBWFC
233PolygEriogonum thomasiiThomas' buckwheatBW33
234PolygEriogonum thurberiThurber's buckwheatBW8
235PolygEriogonum trichopeslittle desert trumpetBW75
236PolygEriogonum wrightii var. nodosumWright's buckwheatBW18
237PolygPterostegia drymarioidesthreadstemBW64
238RanunDelphinium parishii ssp. subglobosumintermediate larkspurBW47
239RhamnZiziphus parryi var. parryilotebushBW3
240RosacCercocarpus betuloides var. betuloidesbirch-leaf mountain-mahoganyBW1
241RosacColeogyne ramosissimablack brushBWFC
242RosacPrunus fremontiidesert apricotBW99
243RosacPrunus ilicifolia ssp. ilicifoliahollyleaf cherryBW1
244RubiaGalium angustifolium ssp. borregoenseBorrego bedstrawBW2
245RubiaGalium stellatumstar-flowered bedstrawBW6
246SimmoSimmondsia chinensisjojobaBW99
247SolanDatura wrightiisacred daturaBW3
248SolanLycium andersoniiAnderson's boxthornBW39
249SolanLycium fremontiiFremont's boxthornBW63
250SolanNicotiana clevelandiiCleveland's tobaccoBWFC
251SolanNicotiana obtusifoliadesert tobaccoBW59
252SolanPhysalis crassifoliathick-leaved ground cherryBW13
253UrticParietaria hespera var. hesperapellitoryBW99
254ViscaPhoradendron californicumdesert mistletoeBW99
255ZygopFagonia laevisCalifornia fagoniaBW7
256ZygopLarrea tridentatacreosote bushBW99
Monocots
257AgavaAgave deserti var. desertidesert agaveBW99
258AgavaHesperocallis undulatadesert lilyBW99
259AgavaHesperoyucca whippleichaparral yuccaBW15
260AgavaYucca schidigeraMohave yuccaBW99
261LiliaCalochortus concolorgolden-bowl mariposa V
262LiliaCalochortus palmeri var. munziiSan Jacinto mariposa lily V
263PoaceAristida purpureapurple three-awnBW7
264PoaceBromus diandrus*ripgut bromeBW99
265PoaceBromus madritensis ssp. rubens*red bromeBW99
266PoaceBromus tectorum*downy bromeBW5
267PoaceCynodon dactylon*Bermuda grassBWFC
268PoaceDasyochloa pulchellafluff grassBWV
269PoaceFestuca bromoides*brome fescue 50
270PoaceFestuca octoflorasix-weeks fescue 5
271PoaceHilaria rigidabig galletaBW99
272PoaceHordeum murinum*foxtail barleyBW30
273PoaceMelica frutescenstall melicaBW10
274PoaceMelica imperfectacoast-range melicBW1
275PoaceMuhlenbergia microspermalittleseed muhlyBWV
276PoaceMuhlenbergia porteriPorter's muhlyBWV
277PoaceSchismus barbatus*Mediterranean schismusBW99
278PoaceSporobolus cryptandrussand dropseed V
279PoaceStipa parishii var. parishiiParish's needlegrassBW1
280PoaceStipa speciosadesert needlegrassBW1
281RuscaNolina parryiParry's nolinaBW1
282ThemiDichelostemma capitatum ssp. capitatumblue dicksBW66
283ThemiMuilla maritimamuillaBW21
284TyphaTypha domingensissouthern cattailBWsp


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


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Copyright © 2018-2019 by Tom Chester, Walt Fidler, Carla Hoegen, Fred Melgert, Don Rideout, Mike Crouse, James Dillane, and Nancy Accola.
Permission is freely granted to reproduce any or all of this page as long as credit is given to us at this source:
http://tchester.org/sd/plants/floras/potrero.html
Comments and feedback: Tom Chester
Last update: 4 April 2019