Flora of southeast Granite Mountain, Anza-Borrego Desert State Park



Granite Mountain is a fairly-well-isolated large mountain that towers over the San Felipe Valley to the north, and Mason Valley to the south. It spans 6.5 miles east-west, and 4.0 miles north-south. It is on the immediate east of the Laguna Escarpment, southwest of Julian and Banner, and shares many montane species with those neighbors on its western side. It is on the immediate west of Shelter / Earthquake / Blair Valley, and shares many desert species with those neighbors on its eastern side.

We have long wanted to do a flora of the different sides of Granite Mountain, to document how the flora changes with cardinal direction. The checklist here is a first attempt to produce a flora of the southeast side of Granite Mountain. The flora is almost certain to be quite incomplete since much of Granite Mountain is very steep and difficult to access.

The southeast side has a north-south extent of 2.7 miles, and an east-west extent of 4.0 miles. It reaches its lowest elevation of 2300 feet at the junction of Box Canyon and Vallecito Wash on its southeasternmost end. The elevation increases to 2600 feet on its easternmost extent at the north end of Blair Valley; and to 2800 feet on its southern end, immediately south of the peak, in Rodriguez Canyon. The peak of Granite Mountain is at 5633 feet.

Fig. 1 shows a Google Earth view of Granite Mountain from the southeast.

Fig. 1. A Google Earth view of Granite Mountain from the southeast. The blue track is the route surveyed in Hornblende Canyon on 3 March 2014. Click on the picture to see a larger area.

This list comes from:

iNat observations for Cool Canyon have not yet been added.

The field surveys were done in a very dry year, so many annual species were missing, and the number of plants observed for annual species that were present are undoubtedly very much lower than would be observed in a wetter year.

The union of the above lists contains 275 taxa.

Fig. 2 shows the voucher locations and some of the localities.

Fig. 2. Geographic locations of vouchers (red dots) in a rectangle containing the se Granite Mountain area. Vouchers are almost entirely solely from the base of Granite Mountain, except for Cool Canyon.

Checklist for southeast Granite Mountain


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

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

The columns with the header #Pls give the minimum number of plants observed in Cool Canyon (CL) and Hornblende Canyon (HB). Additional species for both canyons are noted from vouchers, marked with V. Additional species in Hornblende Canyon are noted from online photos by Carla Hoegen and Fred Melgert, P for photos from the lower canyon (4 species), and U for photos on a trip through the length of the canyon to Granite Peak (2 species). If no species were seen in our surveys, or in vouchers, but were present in iNat observations, the columns contain iN.

Species that have no entry in the #Pls columns are from vouchers in the southeast area of Granite Mountain, from the Oriflamme area on the south to the Cool Canyon area on the east; see Fig. 2. Vouchers are primarily from 2300 to 2800 feet elevation, with a small number from 3000 to 4000 feet, and one voucher from 4400 feet elevation.

Our surveys of Hornblende Canyon covered the first 2.0 miles, elevations 2400 to 3100 feet.

Our survey of Cool Canyon covered 1.6 miles, consisting of 0.93 miles of the main canyon up to the junction with the uppermost tributary on the right; 0.15 miles of the tributary from the west; and 0.55 miles of the uppermost tributary on the right, elevations 2600 to 3400 feet. Don Rideout did an additional survey of Cool Canyon in 15 January 2021 that resulted in the find of several Pinus monophylla trees.

The vouchers in Cool Canyon are primarily from 2400 to 2800 feet elevation (108 out of 125 with elevations), with the rest from 3000 to 4000 feet.

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)

#FamScientific Name
Link goes to the Jepson eflora
(*)Common Name
Link goes to Calphotos
1SelSelaginella bigeloviiBigelow's spike-mossBW9999
2SelSelaginella eremophiladesert spike-mossBW9999
3PteCheilanthes covilleibeady lipfernBW9999
4PteCheilanthes viscidasticky lipfernBW320
5PteNotholaena californica ssp. californicaCalifornia cloak fernBW710
6PtePellaea mucronata var. mucronatabird's-foot fernBW105
7CupJuniperus californicaCalifornia juniperBW6099
8EphEphedra asperaMormon teaBW9975
9EphEphedra californicadesert teaBWiN
10PinPinus monophyllapinyon pineBW3
11AcaCarlowrightia arizonicaArizona carlowrightiaBW37
12AmaAmaranthus fimbriatusfringed amaranthBW9940
13AnaRhus ovatasugar bushBW8iN
14ApiSpermolepis lateriflorabristly spermolepisBW
15ApoFunastrum cynanchoides var. hartwegiiclimbing milkweedBWV99
16ApoFunastrum utahenseUtah vine milkweedBW5
17AstAcamptopappus sphaerocephalus var. sphaerocephalusgoldenheadBW5
18AstAdenophyllum porophylloidesSan Felipe dogweedBW6010
19AstAmbrosia acanthicarpabur-ragweedBW
20AstAmbrosia dumosaburroweedBW3
21AstAmbrosia salsola var. salsolacheesebushBW1020
22AstArtemisia ludoviciana ssp. albulawhite mugwortBW
23AstArtemisia ludoviciana ssp. incomptamountain mugwortBW5010
24AstArtemisia ludoviciana ssp. ludovicianasilver wormwoodV
25AstBaccharis brachyphyllashort-leaved baccharisBW107
26AstBahiopsis parishiiParish's goldeneyeBW9999
27AstBebbia juncea var. asperasweetbushBW4025
28AstBrickellia atractyloides var. argutaCalifornia spear-leaved brickelliaBW23
29AstBrickellia frutescensshrubby brickelliaBW403
30AstChaenactis artemisiifoliameally white pincushionBW
31AstChaenactis fremontiiFremont pincushionBW110
32AstDimorphotheca sinuata*African daisyBWV
33AstEncelia actoniActon enceliaBWV
34AstEncelia farinosabrittlebushBW9999
35AstEncelia farinosa var. phenicodontapurple disk flower brittlebushBWV
36AstEricameria brachylepisboundary goldenbushBW5050
37AstEricameria linearifolianarrowleaf goldenbushBWV1
38AstEriophyllum confertiflorum var. confertiflorumgolden yarrowBW20U
39AstEriophyllum lanosumwhite easter-bonnetsBW
40AstEriophyllum wallacei var. rubellumWallace's woolly daisyBW3P
41AstGutierrezia sarothraematchweedBW3030
42AstLasthenia gracilisgoldfieldsBW10iN
43AstLayia glandulosawhite tidy-tipsBWV
44AstLogfia filaginoidesCalifornia filagoBW5
45AstMalacothrix glabratadesert dandelionBWV
46AstMalacothrix stebbinsiiStebbins' malacothrixBW
47AstMonoptilon bellioidesdesert starBW
48AstPectis papposa var. papposachinch-weedBW2075
49AstPerityle emoryiEmory's rock-daisyBW1210
50AstPorophyllum gracileodoraBW302
51AstPseudognaphalium biolettiibicolored everlastingBWFC
52AstPseudognaphalium californicumCalifornia everlastingBWFC
53AstRafinesquia californicaCalifornia chicoryBW
54AstRafinesquia neomexicanadesert chicoryBWiN
55AstSenecio californicusCalifornia groundselBW
56AstSenecio flaccidus var. monoensisMono ragwortBW
57AstStephanomeria exigua ssp. exiguaslender wreathplantBWV1
58AstStephanomeria pauciflorawire-lettuceBW151
59AstStylocline gnaphaloideseverlasting nest-strawBW5
60AstTrixis californica var. californicaCalifornia trixisBW5
61AstUropappus lindleyisilver puffsBWV
62BigChilopsis linearis ssp. arcuatadesert-willowBW
63BorAmsinckia intermediacommon fiddleneckBW9999
64BorCryptantha barbigera var. barbigerabearded cryptanthaBW4010
65BorCryptantha decipiensgravel cryptanthaBWV
66BorCryptantha intermedia var. intermediapopcorn flowerBW22
67BorCryptantha micrantha var. micranthared-root cryptanthaBW15
68BorCryptantha pterocarya f. pseudocyclopterawing-nut cryptantha253
69BorEmmenanthe penduliflora var. penduliflorawhispering bellsBW305
70BorEucrypta chrysanthemifolia var. bipinnatifidaeucryptaBW8
71BorHarpagonella palmeriPalmer's grapplinghook
72BorNama demissa var. demissapurple matBW
73BorPectocarya linearis ssp. feroculaslender combseedBW1
74BorPectocarya peninsularisBaja pectocaryaBWV
75BorPectocarya recurvatacurvenut combseedBW5iN
76BorPectocarya setosamoth combseedBW
77BorPhacelia affinislimestone phaceliaBWFC
78BorPhacelia campanularia ssp. campanulariadesert bluebellsBWFC
79BorPhacelia cicutaria var. hispidacaterpillar phaceliaBWFC1
80BorPhacelia cryptanthalimestone phaceliaBW
81BorPhacelia distanscommon phaceliaBW5099
82BorPhacelia minorwild canterbury bellsBW101
83BorPhacelia pedicellatapedicellate phaceliaBW5
84BorPholistoma auritum var. auritumfiesta flower3
85BorPlagiobothrys arizonicusArizona popcorn flowerBW2iN
86BorPlagiobothrys nothofulvusrusty-haired popcorn flowerBW
87BraAthysanus pusillusdwarf athysanusBW
88BraBoechera perennansperennial rock-cressBW117
89BraBoechera xylopodaslender & beautiful rock-cressBWV
90BraBrassica tournefortii*Sahara mustardBW99
91BraCaulanthus cooperiCooper's jewel-flowerBW
92BraCaulanthus halliiHall's caulanthusBW4
93BraCaulanthus lasiophyllusCalifornia mustardBW1iN
94BraCaulanthus simulansPayson's wild cabbageBWV3
95BraDescurainia pinnatawestern tansy-mustardBW31
96BraDithyrea californicaspectacle-podBW
97BraDraba cuneifoliawedge-leaved drabaBWV
98BraLepidium lasiocarpum ssp. lasiocarpumhairy-podded pepper-grassBW151
99BraSisymbrium altissimum*tumble-mustardBW1
100BraSisymbrium irio*London rocketBWV
101BraSisymbrium orientale*Oriental mustardBW1
102BraThysanocarpus curvipes ssp. eradiatusfringe-podBW1iN
103BraTropidocarpum gracileslender tropidocarpumBWV
104CacCylindropuntia bigeloviiteddy-bear chollaBW50
105CacCylindropuntia fosbergiipink teddy-bear chollaBW99
106CacCylindropuntia ganderiGander's chollaBW9999
107CacEchinocereus engelmanniiEngelmann's hedgehog cactusBW9935
108CacFerocactus cylindraceusCalifornia barrel cactusBW7570
109CacMammillaria dioicaCalifornia fish-hook cactusBW349
110CacMammillaria tetrancistradesert fish-hook cactusBW14
111CacOpuntia basilaris var. basilarisbeavertail cactusBW995
112CacOpuntia chloroticapancake prickly-pearBWFC
113CacOpuntia engelmannii var. engelmanniiEngelmann prickly-pearBW12
114CacOpuntia phaeacanthadesert prickly-pearBW11
115CamNemacladus glanduliferusglandular nemacladusBW
116CarLoeflingia squarrosaspreading loeflingiaBWV
117CheAtriplex canescens var. canescensfour-wing saltbushBW2
118CheAtriplex canescens var. laciniataCaleb four-wing saltbushBWV
119CheAtriplex canescens var. macilentaSalton saltbushV
120CheAtriplex polycarpacattle saltbushBW
121CheChenopodium californicumCalifornia goosefootBW
122ConCuscuta californicaCalifornia dodderBW
123ConCuscuta pacifica var. pacificasaltmarsh dodder
124CraCrassula connatapygmy-weedBWViN
125CraDudleya arizonicaArizona chalk dudleyaBW3330
126CucCucurbita palmatacoyote melonBW
127CucMarah macrocarpawild-cucumberBW
128EriArctostaphylos glaucabigberry manzanitaBW2
129EupBernardia incanawestern bernardiaBW4550
130EupChamaesyce albomarginatarattlesnake weedBW
131EupChamaesyce melanadeniared-gland spurgeBW2015
132EupChamaesyce micromeraSonoran spurgeBWV
133EupCroton californicusCalifornia crotonBWV
134EupCroton setigerdove weedBW
135EupDitaxis lanceolatanarrowleaf ditaxisBW5515
136EupDitaxis neomexicanaNew Mexico ditaxisBW50
137EupEuphorbia erianthabeetle spurgeBW6
138EupStillingia linearifolialinear-leaved stillingiaBW350
139FabAcmispon argophyllus var. argophyllussouthern California silver-lotusBW52
140FabAcmispon glaber var. brevialatusshort-winged deerweedBW5020
141FabAcmispon haydoniipygmy lotusBW8
142FabAcmispon micranthusSan Diego birdsfoot lotusBW
143FabAcmispon rigidusdesert lotusBWV1
144FabAcmispon strigosusstrigose lotusBW6015
145FabAstragalus palmeriPalmer's milk-vetchBW2015
146FabLotus corniculatus*bird's-foot lotus
147FabLupinus bicolordwarf lupineBW
148FabLupinus concinnusbajada lupineBW202
149FabLupinus sparsiflorusCoulter's lupineBW1
150FabMelilotus indicus*sourcloverBW
151FabProsopis glandulosa var. torreyanahoney mesquiteBW1
152FabSenegalia greggiicatclawBW9999
153FabSenna covesiidesert sennaBWV99
154FagQuercus cornelius-mulleridesert scrub oakBW5
155FouFouquieria splendens ssp. splendensocotilloBW8099
156GerErodium cicutarium*redstem filareeBW9999
157GerErodium texanumTexas filareeBW
158KraKrameria bicolorwhite rhatanyBW1515
159KraKrameria erectaPima rhatanyBW103
160LamSalvia apianawhite sageBW1010
161LamSalvia carduaceathistle sageBW5
162LamSalvia columbariaechiaBW4030
163LoaMentzelia affinisyellow blazing starBW
164LoaMentzelia albicauliswhite-stemmed blazing starBW
165LoaMentzelia hirsutissimahairy stickleafBW
166LoaMentzelia montanamountain blazing starBWV
167MalAyenia compactaayeniaBW4520
168MalHerissantia crispacurly herissantiaBW1
169MalSphaeralcea ambigua var. ambiguaapricot mallowBW2040
170MalSphaeralcea ambigua var. rosacearosy apricot mallowBW
171MolMollugo cerviana*carpet-weedBWV50
172MonCalandrinia ciliatared maidsBW
173MonCalyptridium monandrumsand cressBW12
174NycAbronia villosa var. villosahairy sand-verbenaBW
175NycAllionia incarnata var. villosalarge-flowered trailing four o'clockBW6
176NycBoerhavia coulteri var. palmeriCoulter's spiderling1
177NycBoerhavia triquetra var. intermediafivewing spiderlingBW9940
178NycMirabilis laevis var. retrorsaBigelow's desert four-o'clockBW9920
179NycMirabilis laevis var. villosaBigelow's desert four-o'clockBWV
180OleMenodora scabra var. glabrescensbroom twinberryBWFC
181OnaCamissonia strigulosastrigose suncupBW
182OnaCamissoniopsis hirtellafield suncupBWV
183OnaCamissoniopsis pallida ssp. pallidapale suncupBW9999
184OnaEulobus californicusCalifornia suncupBW9950
185OroCastilleja foliolosawoolly Indian paintbrushBW51
186PapArgemone munitaprickly poppyBW11
187PapEschscholzia minutiflora ssp. minutiflorasmall-flowered poppyBW10
188PhrMimulus bigelovii var. bigeloviiBigelow's monkeyflowerBW1
189PhrMimulus brevipeswide-throated yellow monkeyflowerBW
190PhrMimulus fremontii var. fremontiiFremont's monkeyflowerBW
191PlaAntirrhinum coulterianumCoulter's snapdragonBW
192PlaKeckiella antirrhinoides var. microphyllalittle-leaved chaparral beardtongueBW5020
193PlaPlantago patagonicaPatagonia plantainBW1
194PolEriastrum eremicum ssp. eremicumdesert woolly-starBW310
195PolGilia stellatastar giliaBW
196PolLeptosiphon aureusgolden linanthusBW
197PolLeptosiphon lemmoniiLemmon's linanthusBW5
198PolLinanthus dichotomus ssp. pattersoniievening-snowBW
199PolLoeseliastrum schottiiSchott's calicoBWV
200PolSaltugilia australissouthern giliaBW41
201PolCentrostegia thurberired trianglesBW
202PolChorizanthe brevicornu var. brevicornubrittle spineflowerBWV
203PolChorizanthe fimbriata var. laciniatalace-fringed spineflowerBWV
204PolEriogonum davidsoniiDavidson's buckwheatBW105
205PolEriogonum elongatum var. elongatumlong-stemmed buckwheatBW
206PolEriogonum fasciculatum var. polifoliumCalifornia buckwheatBW6530
207PolEriogonum gracile var. gracileslender buckwheatBW5
208PolEriogonum gracile var. incultumslender buckwheatBWV
209PolEriogonum inflatumdesert trumpetBW
210PolEriogonum plumatellayucca buckwheatBW20
211PolEriogonum thurberiThurber's buckwheatBW5
212PolEriogonum wrightii var. nodosumWright's buckwheatBW6050
213PolLastarriaea coriacealeather spineflower
214PolPterostegia drymarioidesfairy bowties, threadstemBWV
215RanDelphinium parishii ssp. subglobosumintermediate larkspurBW4
216RhaCeanothus leucodermischaparral whitethornBW
217RhaZiziphus parryi var. parryilotebushBWV10
218RosCercocarpus betuloides var. betuloidesbirch-leaf mountain-mahoganyBW
219RosColeogyne ramosissimablack brushBW
220RosPrunus fasciculata var. fasciculatadesert almondBW10
221RosPrunus fremontiidesert apricotBW9999
222RosPrunus ilicifolia ssp. ilicifoliahollyleaf cherryBW22
223RubGalium angustifolium ssp. borregoenseBorrego bedstrawBW5
224RubGalium stellatumstar-flowered bedstrawBW1
225RutThamnosma montanaturpentine broomBW
226SimSimmondsia chinensisjojobaBW3550
227SolDatura wrightiisacred daturaBW499
228SolLycium andersoniiAnderson's boxthornBW1049
229SolLycium cooperiCooper's boxthornBW5
230SolLycium fremontiiFremont's boxthornBW
231SolNicotiana obtusifoliadesert tobaccoBW258
232SolPhysalis crassifoliathick-leaved ground cherryBW1520
233UrtParietaria hespera var. hesperapellitoryBW2
234VisPhoradendron bolleanumdense mistletoeBWV10
235VisPhoradendron californicumdesert mistletoeBW2530
236ZygFagonia laevisCalifornia fagoniaBW4
237ZygKallstroemia californicaCalifornia caltropBW
238ZygLarrea tridentatacreosote bushBW504
239AgaAgave deserti var. desertidesert agaveBW9999
240AgaHesperoyucca whippleichaparral yuccaBW1
241AgaYucca schidigeraMohave yuccaBW3510
242AllAllium fimbriatum var. fimbriatumfringed onionBWV
243LilCalochortus palmeri var. munziiSan Jacinto mariposa lily
244LilCalochortus splendenssplendid mariposa lilyBWV
245PoaAristida adscensionissix-weeks three-awnBW9920
246PoaAristida purpureapurple three-awnBW2030
247PoaAristida purpurea var. fendlerianaFendler three-awnBW
248PoaAristida purpurea var. longisetared three-awnBW
249PoaAristida purpurea var. nealleyiNealley three-awnBWV
250PoaAristida purpurea var. wrightiiWright three-awnBWV
251PoaAvena barbata*slender wild oatsBW1
252PoaAvena fatua*wild oats
253PoaBouteloua aristidoides var. aristidoidesneedle gramaBW99
254PoaBouteloua barbata var. barbatasix-weeks gramaBW9970
255PoaBouteloua curtipendulaside-oats gramaBW21
256PoaBromus berteroanusChilean chessBW2
257PoaBromus diandrus*ripgut bromeBW
258PoaBromus madritensis ssp. rubens*red bromeBW9999
259PoaBromus tectorum*downy bromeBW20
260PoaDasyochloa pulchellafluff grassBWV
261PoaFestuca octoflorasix-weeks fescueBWV
262PoaHeteropogon contortustangleheadBW21
263PoaHilaria rigidabig galletaBW99
264PoaMelica frutescenstall melicaBW5020
265PoaMuhlenbergia appressaappressed muhlyV
266PoaMuhlenbergia microspermalittleseed muhlyBW6015
267PoaMuhlenbergia porteriPorter's muhlyBW4
268PoaPoa secunda ssp. secundaone-sided bluegrassBW10
269PoaSchismus barbatus*Mediterranean schismusBW9999
270PoaSporobolus cryptandrussand dropseedBW1
271PoaStipa parishii var. parishiiParish's needlegrassBW810
272PoaStipa speciosadesert needlegrassBW155
273RusNolina parryiParry's nolinaBW36
274TheDichelostemma capitatum ssp. pauciflorumfew-flowered blue dicksBWViN
275TheMuilla maritimamuillaBWV

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

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Copyright © 2014-2021 by Tom Chester (3), Kate Harper (2), Don Rideout (2), RT Hawke (1.5), Shaun Hawke (1.5), Adrienne Ballwey (1), and Ted Caragozian (1). The number of surveys done by each author is given in parentheses after the author name.
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: 15 March 2021