The Flora of the PCT: A1 Mexican Border to Highway 94: Area Flora

See The Flora of the PCT: A1 Mexican Border to Highway 94 for an introduction to this checklist.

This version of the Checklist gives the plant species from the trail, as well as from vouchers from the surrounding area, in plant family order, with the Family and Scientific Name from the 2012 Second Edition Jepson Manual.

The column #V gives the number of vouchers for this area, with a maximum value of 9.

The column #Pls gives a rough estimate of the minimum number of plants that we saw in the 3 November 2014 survey, with a maximum value of 99 plants. The main intent of this column is to indicate the species for which we found very few plants. The column contains RT for species seen only in 4/27/13 survey, where no estimate of the abundance was made.

The entry is preceded by an indication of the uncertainty of the determination; see abbreviation for the determination uncertainties.

See Information about the links from the Scientific Name and Common Name.

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)

#FamilScientific Name(*)Common Name#V#Pls
Lycophytes
1SelagSelaginella bigeloviiBigelow's spike-moss299
Ferns
2DryopDryopteris argutaCalifornia wood fern3 
3PteriCheilanthes clevelandiiscaly lipfern320
4PteriCheilanthes covilleibeady lipfern23
5PteriPellaea mucronata var. mucronatabird's-foot fern210
6PteriPentagramma triangularis ssp. rebmaniiRebman's silverback fern110
7PteriPentagramma triangularis ssp. triangularisgoldback fern 2
Gymnosperms
8EphedEphedra californicadesert tea51
Eudicots
9AdoxaSambucus nigra ssp. caeruleablue elderberry 2
10AmaraAmaranthus albus*tumble pigweed 99
11AmaraAmaranthus hybridus*slim amaranth 1
12AmaraNitrophila occidentaliswestern nitrophila4 
13AnacaRhus aromaticabasketbush230
14AnacaRhus ovatasugar bush440
15AnacaToxicodendron diversilobumpoison oak 1
16ApiacDaucus pusillusrattlesnake weed 3
17ApiacLomatium dasycarpum ssp. dasycarpumwoolly-fruited lomatium RT
18ApiacOenanthe sarmentosawater-parsley1 
19ApiacTauschia argutasouthern tauschia2RT
20AsterAchillea millefoliumyarrow1 
21AsterAcourtia microcephalapurple head12
22AsterAmbrosia acanthicarpabur-ragweed 20
23AsterArtemisia dracunculuswild tarragon150
24AsterArtemisia tridentatabig sagebrush999
25AsterBaccharis sarothroidesbroom baccharis11
26AsterBrickellia californicaCalifornia brickellbush13
27AsterChaenactis artemisiifoliameally white pincushion1 
28AsterChaenactis glabriuscula var. glabriusculayellow pincushion RT
29AsterCirsium occidentale var. californicumCalifornia thistle 5
30AsterCirsium ochrocentrum var. ochrocentrum*yellow-spined thistle1 
31AsterCirsium scariosumelk thistle1 
32AsterCorethrogyne filaginifoliaCalifornia-aster 50
33AsterEricameria brachylepisboundary goldenbush520
34AsterEricameria linearifolianarrowleaf goldenbush1 
35AsterEricameria pinifoliapine goldenbush1 
36AsterErigeron canadensishorseweed 1
37AsterErigeron foliosus var. foliosusleafy daisy1RT
38AsterEriophyllum confertiflorum var. confertiflorumgolden yarrow220
39AsterEriophyllum wallaceiWallace's woolly daisy2 
40AsterEuthamia occidentaliswestern goldenrod1 
41AsterGeraea viscidasticky geraea51
42AsterGutierrezia californicaCalifornia matchweed199
43AsterGutierrezia sarothraematchweed3 
44AsterHazardia squarrosa var. grindelioidessaw-toothed goldenbush 20
45AsterHelianthus californicusCalifornia sunflower1 
46AsterHeterotheca grandifloratelegraph weed 20
47AsterLasthenia gracilisgoldfields RT
48AsterMalacothrix californicaCalifornia dandelion2 
49AsterMalacothrix clevelandiiannual malacothrix2 
50AsterMalacothrix coulterisnake's head1 
51AsterPluchea odorata var. odoratasalt marsh fleabane1 
52AsterPorophyllum gracileodora1 
53AsterPseudognaphalium biolettiibicolored everlasting 1
54AsterPseudognaphalium microcephalumwhite everlasting12
55AsterPseudognaphalium thermaleslender everlasting1 
56AsterRafinesquia californicaCalifornia chicory RT
57AsterSenecio flaccidus var. douglasiibush senecio1 
58AsterStephanomeria exigua ssp. exiguaslender wreathplant110
59AsterStylocline gnaphaloideseverlasting nest-straw RT
60AsterTetradymia comosacotton-thorn65
61AsterUropappus lindleyisilver puffs 1
62AsterXanthium strumariumcocklebur1 
63BerbeBerberis pinnata ssp. pinnatashiny-leaf barberry6 
64BoragAmsinckia intermediacommon fiddleneck1spRT
65BoragAmsinckia retrorsasmall-flowered fiddleneck2 
66BoragCryptantha intermedia var. intermediapopcorn flower4spRT
67BoragCryptantha micrantha var. lepidamountain red-root cryptantha2 
68BoragCryptantha muricata var. jonesiiJones' prickly-nut cryptantha1 
69BoragEriodictyon trichocalyx var. lanatumsmoothleaf yerba santa530
70BoragEucrypta chrysanthemifolia var. chrysanthemifoliaeucrypta1 
71BoragHeliotropium curassavicum var. oculatumseaside heliotrope2 
72BoragNemophila menziesii var. integrifoliababy blue eyes1 
73BoragPectocarya heterocarpachuckwalla pectocarya1RT
74BoragPectocarya penicillatacombseed1 
75BoragPectocarya setosamoth combseed3 
76BoragPhacelia brachylobashort-lobed phacelia2 
77BoragPhacelia cicutaria var. hispidacaterpillar phacelia RT
78BoragPhacelia distanscommon phacelia1RT
79BoragPhacelia parryiParry's phacelia2RT
80BoragPhacelia ramosissimabranching phacelia35
81BoragPlagiobothrys stipitatus var. micranthuscommon vernal pool allocarya1 
82BoragPlagiobothrys tenellusslender popcorn flower1 
83BrassBoechera arcuataarched elegant rock-cress1 
84BrassBoechera californicaCalifornia elegant rock-cress3~5
85BrassBoechera pulchra, B. xylopodabeautiful rock-cress1 
86BrassCaulanthus lasiophyllusCalifornia mustard3RT
87BrassDescurainia pinnatawestern tansy-mustard15
88BrassErysimum capitatumwestern wallflower2 
89BrassHirschfeldia incana*shortpod mustard 30
90BrassLepidium nitidumshining peppergrass sp1?
91BrassLepidium virginicumwild pepper-grass1 
92BrassNasturtium officinalewater cress1 
93BrassSisymbrium altissimum*tumble-mustard 20
94BrassStreptanthus bernardinusLaguna Mtns. jewel-flower1 
95BrassStreptanthus campestrissouthern jewel-flower3 
96BrassThysanocarpus curvipesfringe-pod2spRT
97CactaCylindropuntia californica var. parkericane cholla 99
98CactaOpuntia phaeacanthadesert prickly-pear 10
99CampaNemacladus longiflorus var. longiflorusthread plant3 
100CampaNemacladus ramosissimusNuttall's nemacladus1 
101CapriLonicera subspicata var. denudatasouthern honeysuckle13
102CapriSymphoricarpos albus var. laevigatussnowberry2 
103CaryoLoeflingia squarrosaspreading loeflingia1 
104CaryoSilene gallica*windmill pink1 
105ChenoAtriplex argentea var. expansaMojave silverscale1 
106ChenoAtriplex canescens var. canescensfour-wing saltbush 1
107ChenoAtriplex rosea*tumbling oracle1 
108ChenoChenopodium album*white goosefoot 3
109ChenoChenopodium californicumCalifornia goosefoot RT
110ChenoChenopodium murale*nettle-leaved goosefoot 10
111ChenoSalsola tragus*Russian thistle 10
112ConvoCalystegia longipesPiute morning-glory1 
113ConvoCuscuta californicaCalifornia dodder sp30
114CrassDudleya abramsii ssp. abramsiiAbrams' dudleya399
115CrassDudleya pulverulentaCalifornia chalk lettuce 3
116CucurCucurbita foetidissimastinking gourd 2
117CucurCucurbita palmatacoyote melon 15
118CucurMarah macrocarpawild-cucumber RT
119EricaArctostaphylos glandulosaEastwood manzanita 1
120EricaArctostaphylos glaucabigberry manzanita45
121EricaArctostaphylos pringlei ssp. drupaceapink-bracted manzanita1 
122EricaArctostaphylos pungensMexican manzanita930
123EuphoChamaesyce maculata*spotted spurge 20
124EuphoChamaesyce micromeraSonoran spurge 99
125EuphoChamaesyce serpyllifolia ssp. serpyllifoliathyme-leafed spurge 20
126EuphoCroton californicusCalifornia croton22
127EuphoCroton setigerusdove weed 3
128FabacAcmispon argophyllus var. argophyllussouthern California silver-lotus450
129FabacAcmispon glaber var. brevialatusshort-winged deerweed 99
130FabacAcmispon heermannii var. heermanniisilky lotus1 
131FabacAcmispon nevadensis var. davidsoniiDavidson's lotus1 
132FabacAcmispon strigosusstrigose lotus2 
133FabacAstragalus didymocarpus var. dispermusdwarf white milk-vetch1 
134FabacAstragalus douglasii var. parishiiParish' Jacumba milk-vetch1 
135FabacAstragalus douglasii var. perstrictusJacumba milk-vetch 4
136FabacLathyrus splendenspride-of-California93
137FabacLathyrus vestitus var. alefeldiiSan Diego pea1 
138FabacLupinus bicolordwarf lupine1RT
139FabacLupinus concinnusbajada lupine3 
140FabacLupinus truncatuscollar lupine1 
141FabacMelilotus albus*white sweetclover1 
142FabacRobinia pseudoacacia*black locust 1
143FabacSenegalia greggiicatclaw1 
144FabacTrifolium wormskioldiicows clover1 
145FagacQuercus acutidensTorrey's scrub oak 99
146FagacQuercus agrifolia var. oxyadeniasouthern coast live oak320
147FagacQuercus berberidifoliascrub oak1 
148FagacQuercus cornelius-mulleridesert scrub oak32
149FagacQuercus engelmanniiEngelmann oak2 
150GarryGarrya veatchiicanyon silktassel910
151GentiFrasera parryiParry's green-gentian1 
152GeranErodium cicutarium*redstem filaree199
153GrossRibes indecorumwhite-flowering currant3 
154LamiaMarrubium vulgare*horehound110
155LamiaMentha spicata*spearmint1 
156LamiaSalvia apianawhite sage 3
157LamiaSalvia columbariaechia11
158LamiaTrichostema parishiiParish's bluecurls12
159LoasaMentzelia albicauliswhite-stemmed blazing star1 
160LoasaMentzelia veatchianaVeatch's blazing star1 
161MalvaMalva parviflora*cheeseweed1 
162MalvaSidalcea sparsifoliacheckerbloom1 
163MartyProboscidea louisianica ssp. louisianica*common devil's claw 3
164MontiClaytonia parviflora ssp. parvifloranarrow-leaved miner's lettuce spRT
165OleacOlea europaea*olive 1
166OnagrCamissoniopsis hirtellafield suncup4 
167OnagrClarkia delicatadelicate clarkia2RT
168OnagrEulobus californicusCalifornia suncup1sp2
169OnagrOenothera californicaCalifornia evening-primrose1 
170OrobaCastilleja affinisIndian paintbrush1 
171OrobaCastilleja subinclusa ssp. subinclusalong-leaf paintbrush1 
172OrobaCordylanthus rigidus ssp. setigerusbristly bird's beak1 
173PaeonPaeonia californicaCalifornia peony2RT
174PapavDendromecon rigidabush poppy1 
175PapavEschscholzia caespitosatufted eschscholzia ~RT
176PapavEschscholzia californicaCalifornia poppy31
177PhrymMimulus aurantiacus var. puniceusred bush monkeyflower230
178PhrymMimulus brevipeswide-throated yellow monkeyflower1RT
179PhrymMimulus diffususPalomar monkeyflower1 
180PhrymMimulus fremontii var. fremontiiFremont's monkeyflower3 
181PhrymMimulus palmeriPalmer's monkeyflower2 
182PlantAntirrhinum coulterianumCoulter's snapdragon2RT
183PlantAntirrhinum nuttallianum ssp. nuttallianumpurple snapdragon 3
184PlantCollinsia concolorsouthern Chinese houses3 
185PlantKeckiella antirrhinoides var. antirrhinoideschaparral beardtongue13
186PlantKeckiella ternata var. ternatawhorledleaf penstemon 5
187PlantNuttallanthus texanusblue toad-flax1 
188PlantPenstemon centranthifoliusscarlet bugler43
189PlantPenstemon clevelandii var. clevelandiiCleveland's beardtongue1 
190PlantPenstemon spectabilis var. spectabilisshowy penstemon 1
191PlantPlantago major*common plantain2 
192PolemEriastrum densifoliumgiant woolly-star120
193PolemEriastrum sapphirinum ssp. sapphirinumsapphire woolly-star3sp5
194PolemGilia capitata ssp. abrotanifoliaglobe gilia1RT
195PolemLeptosiphon floribundus ssp. glabersummer snow2 
196PolemLeptosiphon lemmoniiLemmon's linanthus2 
197PolemSaltugilia australissouthern gilia1 
198PolygChorizanthe leptothecaPeninsular spineflower2spRT
199PolygEriogonum elongatum var. elongatumlong-stemmed buckwheat1 
200PolygEriogonum fasciculatum var. foliolosumCalifornia buckwheat299
201PolygEriogonum fasciculatum var. polifoliumCalifornia buckwheat25
202PolygEriogonum gracile var. gracileslender buckwheat33
203PolygEriogonum plumatellayucca buckwheat1 
204PolygEriogonum wrightii var. membranaceumWright's buckwheat1 
205PolygEriogonum wrightii var. nodosumWright's buckwheat1 
206PolygPterostegia drymarioidesthreadstem 1
207PortuPortulaca oleracea*common purslane 15
208RanunClematis paucifloravirgin's bower2sp1
209RhamnCeanothus cuneatus var. cuneatusbuck brush93
210RhamnCeanothus leucodermischaparral whitethorn610
211RhamnCeanothus oliganthushairy ceanothus2 
212RhamnCeanothus perplexanscupped-leaf ceanothus725
213RhamnFrangula californica ssp. crassifoliaserpentine hoary coffeeberry1 
214RhamnFrangula californica ssp. tomentellahoary coffeeberry2 
215RhamnRhamnus crocearedberry ~1
216RhamnRhamnus ilicifoliahollyleaf redberry85
217RosacAdenostoma fasciculatumchamise499
218RosacAdenostoma sparsifoliumred shanks399
219RosacCercocarpus betuloides var. betuloidesbirch-leaf mountain-mahogany3 
220RosacCercocarpus minutiflorusSan Diego mountain mahogany330
221RosacHeteromeles arbutifoliatoyon 3
222RosacPrunus ilicifolia ssp. ilicifoliahollyleaf cherry230
223RosacRosa californicaCalifornia wild rose1 
224RosacRubus ursinusCalifornia blackberry1 
225RubiaGalium andrewsii ssp. andrewsiiphlox-leaved bedstraw15
226RubiaGalium angustifolium ssp. angustifoliumnarrowleaf bedstraw210
227RubiaGalium porrigens var. porrigensgraceful bedstraw 15
228SalicPopulus fremontii ssp. fremontiiFremont cottonwood 3
229SalicSalix laevigatared willow4 
230SalicSalix lasiolepisarroyo willow1 
231SolanDatura wrightiisacred datura 3
232SolanNicotiana attenuatacoyote tobacco3 
233SolanSolanum umbelliferumblue-witch nightshade410
234ViscaPhoradendron serotinum ssp. tomentosumoak mistletoe210
235VitacParthenocissus vitaceaVirginia creeper 1
236ZygopTribulus terrestris*puncture-vine 10
Monocots
237AgavaHesperoyucca whippleichaparral yucca 30
238AgavaYucca schidigeraMohave yucca130
239AlliaAllium peninsulare var. peninsulareMexicali onion1 
240CyperCarex praegracilisclustered field sedge1 
241CyperCarex triquetratriangular-fruit sedge1 
242CyperCyperus parishiiParish's flatsedge1 
243CyperCyperus squarrosusbearded flatsedge1 
244CyperEleocharis montevidensissand spikerush1 
245CyperIsolepis cernuaannual tule1 
246CyperSchoenoplectus acutus var. occidentaliscommon tule1 
247JuncaJuncus dubiusMariposa rush1 
248JuncaJuncus tiehmiiTiehm's rush1 
249LiliaCalochortus concolorgolden-bowl mariposa1 
250PoaceAristida purpurea var. parishiiParish three-awn 30
251PoaceAvena barbata*slender wild oats 99
252PoaceBromus carinatus var. carinatusCalifornia brome1 
253PoaceBromus diandrus*ripgut brome199
254PoaceBromus hordeaceus*soft chess RT
255PoaceBromus madritensis ssp. rubens*red brome 99
256PoaceBromus tectorum*downy brome 40
257PoaceCynodon dactylon*Bermuda grass 30
258PoaceElymus elymoidessquirreltail2 
259PoaceElymus elymoides var. brevifoliusshort-leaved squirreltail1 
260PoaceElymus glaucusblue wildrye1 
261PoaceElymus glaucus ssp. virescensVirginia wildrye1 
262PoaceElymus triticoidescreeping wild rye2 
263PoaceFestuca myuros*rattail fescue 5
264PoaceFestuca octoflorahairy six-weeks fescue3 
265PoaceHordeum murinum ssp. glaucum*foxtail barley RT
266PoaceMelica imperfectacoast-range melic 30
267PoacePoa bigeloviiBigelow's blue grass1 
268PoaceSchismus barbatus*Mediterranean schismus 20
269PoaceSorghum halepense*johnsongrass 1
270PoaceStipa coronatagiant needlegrass ~1
271PoaceStipa speciosadesert needlegrass1 
272PotamPotamogeton foliosus ssp. foliosusleafy pondweed1 
273ThemiDichelostemma capitatum ssp. capitatumblue dicks RT


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Copyright © 2014 by RT Hawke, Shaun Hawke, Tom Chester, Keir Morse, James Dillane, and Jim Roberts
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/pct/a/a1_area_flora.html
Comments and feedback: Tom Chester
Updated 6 November 2014.