The Flora of the PCT: A9c Highway S22 (Barrel Springs) to High Point on PCT Section A9: Plant Trail Order

See The Flora of the PCT: A9 Highway 78 to Highway S22 (Barrel Springs) for an introduction to this checklist.

This version of the Checklist is in order of plants along the trail, from Highway S22 (Barrel Springs) to High Point on PCT Section A9, north to south.

An entry in the ID? column indicates uncertain determinations; see abbreviation for the determination uncertainties. Two species were planted at the trailhead; they have pltd in that column.

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

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Mile#ID?Scientific Name(*)Common Name#Pls
0.00  Trailhead at S22, elevation 3460 feet. The following species are at the trailhead, in alphabetical order
0.001 short-winged deerweedAcmispon glaber var. brevialatus99
0.002 chamiseAdenostoma fasciculatum99
0.003 bur-ragweedAmbrosia acanthicarpa5
0.004 common fiddleneckAmsinckia intermedia5
0.005 wild tarragonArtemisia dracunculus10
 6 mountain mugwortArtemisia ludoviciana ssp. incompta50
0.007 big sagebrushArtemisia tridentata10
0.008 *ripgut bromeBromus diandrus99
0.009 *red bromeBromus madritensis ssp. rubens99
0.0010 *downy bromeBromus tectorum99
0.0011~strigose suncupCamissonia strigulosa20
0.0012spSan Bernardino suncupCamissoniopsis confusa99
0.0013 *shepherd's purseCapsella bursa-pastorisRT
0.0014 cupped-leaf ceanothusCeanothus perplexans99
 15 Fremont's goosefootChenopodium fremontiiV
 16 narrow-leaved miner's lettuceClaytonia parviflora ssp. parviflora99
0.0017 California-asterCorethrogyne filaginifolia30
0.0018 cane chollaCylindropuntia californica var. parkeri7
0.0019 pine goldenbushEricameria pinifolia20
0.0020 California buckwheatEriogonum fasciculatum var. polifolium99
0.0021spslender buckwheatEriogonum gracile var. incultum40
0.0022 *redstem filareeErodium cicutarium99
0.0023~angel's giliaGilia angelensis30
0.0024 *shortpod mustardHirschfeldia incana10
0.0025 goldfieldsLasthenia gracilisRT
0.0026 sticky lessingiaLessingia glandulifera var. glandulifera10
0.0027?*narrowleaf filagoLogfia gallica1
0.0028~*pineapple weedMatricaria discoidea30
0.0029 Bigelow's desert four-o'clockMirabilis laevis var. retrorsa5
0.0030spcombseedPectocarya penicillata20
0.0031 scarlet buglerPenstemon centranthifolius2
0.0032 showy penstemonPenstemon spectabilis var. spectabilis2
0.0033pltdknobcone pinePinus attenuata1
0.0034pltdCoulter pinePinus coulteri1
0.0035spArizona popcorn flowerPlagiobothrys arizonicus10
0.0036 *bulbous blue grassPoa bulbosa ssp. viviparaRT
0.0037 southern coast live oakQuercus agrifolia var. oxyadenia50
0.0038 California chicoryRafinesquia californica99
 39 white sageSalvia apiana30
0.0040 blue elderberrySambucus nigra ssp. caerulea10
0.0041 *tumble-mustardSisymbrium altissimum80
   Begin plants in order along trail near gate (look for earliest Stephie exigua)
0.0242 California goosefootChenopodium californicum12
0.0243spsapphire woolly-starEriastrum sapphirinum ssp. sapphirinum2
0.0244 Parish's purple nightshadeSolanum parishii30
0.0345~*Mediterranean schismusSchismus barbatus99
0.0446 beavertail cactusOpuntia basilaris var. basilaris30
0.0447 desert prickly-pearOpuntia phaeacantha6
 48 popcorn flowerCryptantha intermedia var. intermediaRT
 49 whispering bellsEmmenanthe penduliflora var. penduliflora99
0.0450 hoary coffeeberryFrangula californica ssp. tomentella2
0.0451 Torrey's scrub oakQuercus acutidens50
0.0452 golden yarrowEriophyllum confertiflorum var. confertiflorum20
0.0453 California elegant rock-cressBoechera californica50
0.0454 narrowleaf bedstrawGalium angustifolium ssp. angustifolium10
0.0455 hollyleaf redberryRhamnus ilicifolia7
 56 purple clarkiaClarkia purpurea ssp. quadrivulneraRT
0.0457 bigberry manzanitaArctostaphylos glauca99
0.0458 California matchweedGutierrezia californica40
0.0459 whorledleaf penstemonKeckiella ternata var. ternata10
0.0460 southern honeysuckleLonicera subspicata var. denudata30
0.0461 basketbushRhus aromatica7
0.0462 sugar bushRhus ovata99
0.0463 white-flowering currantRibes indecorum25
0.0464 southern tauschiaTauschia arguta10
0.0465 fragrant everlastingPseudognaphalium beneolens5
0.0666 Parish' Jacumba milk-vetchAstragalus douglasii var. parishii1
0.0667 *London rocketSisymbrium irio5
0.07  Barrel Spring
 68 horseweedErigeron canadensisV
 69 *common cudweedPseudognaphalium luteoalbumV
 70 *green bentgrassPolypogon viridisV
0.0771sppygmy-weedCrassula connata99
0.0772 *Bermuda grassCynodon dactylon1
0.0773 sacred daturaDatura wrightii1
0.0774 Mexican rushJuncus mexicanus99
0.0775~*henbitLamium amplexicaule30
0.0776 *foxtail barleyHordeum murinumRT
0.0777?shining peppergrassLepidium nitidum3
0.0778 *California burcloverMedicago polymorpha10
0.0779 *sourcloverMelilotus indicus2
0.0780 *common plantainPlantago major20
0.0781 *annual blue grassPoa annua1
0.0782 *common chickweedStellaria media50
0.0983 western tansy-mustardDescurainia pinnata2
0.0984 branching phaceliaPhacelia ramosissima1
 85 California dandelionMalacothrix californicaRT
 86splace-podThysanocarpus laciniatusRT
0.0987 poison oakToxicodendron diversilobum50
0.1088 Wright's buckwheatEriogonum wrightii var. membranaceum2
0.1089spyellow-stem bush mallowMalacothamnus densiflorus4
0.1190 bristly bird's beakCordylanthus rigidus ssp. setigerus10
0.1191 coast-range melicMelica imperfecta30
0.1192 little monardellaMonardella nana99
0.1293 saw-toothed goldenbushHazardia squarrosa var. grindelioides15
0.1394 southern Chinese housesCollinsia concolor3
0.1395 phlox-leaved bedstrawGalium andrewsii ssp. andrewsii5
0.1396 baby blue eyesNemophila menziesii var. menziesii99
0.1497 blue dicksDichelostemma capitatum ssp. capitatum99
0.1498 California thistleCirsium occidentale var. californicum99
0.2099 graceful bedstrawGalium porrigens var. porrigens4
0.20100 toyonHeteromeles arbutifolia15
0.21101 Eastwood manzanitaArctostaphylos glandulosa50
 102sp*hedge mustardSisymbrium officinaleRT
0.21103 goldenrodSolidago velutina ssp. californica99
0.21104 *black medickMedicago lupulina30
0.21105 deergrassMuhlenbergia rigens24
0.21106sparroyo willowSalix lasiolepis2
0.21107 wild grapeVitis girdiana4
0.21108 *bull thistleCirsium vulgare12
 109 purple headAcourtia microcephala3
 110 western wallflowerErysimum capitatum var. capitatum1
 111 leafy daisyErigeron foliosus var. foliosusRT
 112spParish's lupineLupinus latifolius var. parishiiRT
 113 mountain California-fuchsiaEpilobium canum ssp. latifoliumRT
 114 lesser paintbrushCastilleja minor ssp. spiralisRT
0.22115 slender sunflowerHelianthus gracilentus30
0.22116?Martin's paintbrushCastilleja applegatei ssp. martinii5
0.24117 silver puffsUropappus lindleyi7
 118 ashy silk tasselGarrya flavescens20
 119 *prickly sow thistleSonchus asper ssp. asperRT
0.31120 *celeryApium graveolens30
0.31121 iris-leaved rushJuncus xiphioides2
 122 *sow thistleSonchus oleraceusRT
0.31123sptall rushJuncus with 3 foot long stem or leaf1
0.33124 willowherbEpilobium ciliatum ssp. ciliatum5
0.33125 *rabbits-foot grassPolypogon monspeliensis1
0.34126 Fremont cottonwoodPopulus fremontii ssp. fremontii2
0.34127 chaparral yuccaHesperoyucca whipplei20
   Look for earlier Cercocarpus
0.37128 white everlastingPseudognaphalium microcephalum3
 129 golden ear dropsEhrendorferia chrysanthaV
 130 slender buckwheatEriogonum gracile var. gracileV
0.42131 Mohave yuccaYucca schidigera2
0.42132 bush poppyDendromecon rigida10
0.44133 common phaceliaPhacelia distans99
0.44134 Parish's bluecurlsTrichostema parishii15
0.44135 red maidsCalandrinia ciliata99
0.46136 strigose lotusAcmispon strigosus10
0.46137 California filagoLogfia filaginoides2
0.46138 meally white pincushionChaenactis artemisiifolia99
0.46139~eucryptaEucrypta chrysanthemifolia var. chrysanthemifolia20
 140 one-sided bluegrassPoa secunda ssp. secunda99
0.47141 chiaSalvia columbariae99
0.47142 California suncupEulobus californicus99
0.47143~desert needlegrassStipa speciosa10
0.48144 birch-leaf mountain-mahoganyCercocarpus betuloides var. betuloides99
0.49145?unk rosette1
0.50146 scaly lipfernCheilanthes clevelandii30
0.51147?like Chaenactis fremontii2
0.51148?California mustardCaulanthus lasiophyllus5
0.53  gate
0.54149 hollyleaf cherryPrunus ilicifolia ssp. ilicifolia40
0.55150 sand cressCalyptridium monandrum99
0.58151 oak mistletoePhoradendron serotinum ssp. tomentosum2
0.59  gate
0.66  Fallen gate
 152sp*rattail fescueFestuca myurosRT
0.76153 woolly Indian paintbrushCastilleja foliolosa8
 154~caterpillar phaceliaPhacelia cicutaria var. hispidaRT
0.78155 bird's-foot fernPellaea mucronata var. mucronata12
0.79156 Davidson's buckwheatEriogonum davidsonii15
 157 canyon dodderCuscuta subinclusaV
0.83  GPS point “GPEN”; big green cross on topo map; why?
0.86158?San Diego jewelflowerCaulanthus heterophyllus var. heterophyllus40
 159 wild-cucumberMarah macrocarpa2
0.92160 giant needlegrassStipa coronata10
0.92161 threadstemPterostegia drymarioides99
0.96162 intermediate larkspurDelphinium parishii ssp. subglobosum99
0.96163~Rebman's silverback fernPentagramma triangularis ssp. rebmanii20
0.98164~coffee fernPellaea andromedifolia15
1.00165 *slender wild oatsAvena barbata99
1.02166 desert dudleyaDudleya saxosa ssp. aloides60
1.02167 Engelmann's hedgehog cactusEchinocereus engelmannii19
1.53168 red shanksAdenostoma sparsifolium99
 169 red three-awnAristida purpurea var. longisetaV
 170 Bigelow's desert four-o'clockMirabilis laevis var. villosaV
 171 Parish's goldenbushEricameria parishii var. parishiiV
 172 San Diego sunflowerHulsea californicaV
 173 Ramona clarkiaClarkia similisV
2.00174 slender wreathplantStephanomeria exigua ssp. deanei2
2.05175 Coulter's snapdragonAntirrhinum coulterianum5
2.06176 fringe-podThysanocarpus curvipes ssp. eradiatus10
2.08177 stinging lupineLupinus hirsutissimus10
2.20178 lace-fringed spineflowerChorizanthe fimbriata var. laciniata99
2.84179~wild canterbury bellsPhacelia minor99
2.84180spMariposa lilyCalochortus sp.2
3.06181 desert globemallowSphaeralcea ambigua var. rugosa10
3.12  The following five species are found to the left in the drainage:
3.12182 hoary bowlesiaBowlesia incana99
3.12183 California brickellbushBrickellia californicaV
3.12184 blue wildryeElymus glaucus1
3.12185 oak gooseberryRibes quercetorum3
3.12186 California bee plantScrophularia californica15
3.24187 rattlesnake weedDaucus pusillus25
3.43188 prickly poppyArgemone munita1
4.41189 narrowleaf goldenbushEricameria linearifolia13
4.46190 boundary goldenbushEricameria brachylepis1
 191 southern California silver-lotusAcmispon argophyllus var. argophyllusV
4.72192 Payson's wild cabbageCaulanthus simulans99
4.78 spMariposa lilyCalochortus sp.5
4.84193spbajada lupineLupinus concinnus99
4.96  Short tunnel
 194~dense false-giliaAllophyllum gilioides ssp. violaceumRT
5.23  High point on this trail segment; end plant guide


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Copyright © 2015 by RT Hawke, Shaun Hawke, Tom Chester, James Dillane, Adrienne Ballwey, 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:
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Comments and feedback: Tom Chester
Updated 29 March 2015.