The Flora of the PCT: A1 Mexican Border to Highway 94: Plant Trail Order

The Flora of the PCT: A1 Mexican Border to Highway 94: Plant Trail Order

See The Flora of the PCT: A1 Mexican Border to Highway 94 for an introduction to this checklist.
This version of the Checklist is in order of plants along the trail, from the Mexican Border to Highway 94. There is uncertainty in the order in some places, due to combining lists made on 4/27/2013 and 11/3/2014.
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 (4 pages) or pdf Clickbook booklet (1 double-sided page). (See printing instructions for an explanation of these options)

# Famil Scientific Name (*)Common Name #Pls
1 Polyg Eriogonum fasciculatum var. foliolosum California buckwheat 99
2 Aster Gutierrezia californica California matchweed 99
3 Borag Cryptantha intermedia var. intermedia popcorn flower spRT
4 Poace Bromus madritensis ssp. rubens *red brome 99
5 Fabac Acmispon glaber var. brevialatus short-winged deerweed 99
6 Rosac Adenostoma fasciculatum chamise 99
7 Convo Cuscuta californica California dodder sp30
8 Agava Hesperoyucca whipplei chaparral yucca 30
9 Cacta Opuntia phaeacantha desert prickly-pear 10
10 Aster Artemisia tridentata big sagebrush 99
11 Polem Eriastrum sapphirinum ssp. sapphirinum sapphire woolly-star sp5
12 Poace Bromus diandrus *ripgut brome 99
13 Borag Amsinckia intermedia common fiddleneck spRT
14 Adoxa Sambucus nigra ssp. caerulea blue elderberry 2
15 Fagac Quercus acutidens Torrey's scrub oak 99
16 Poace Bromus hordeaceus *soft chess RT
17 Aster Stephanomeria exigua ssp. exigua slender wreathplant 10
18 Brass Hirschfeldia incana *shortpod mustard 30
19 Poace Bromus tectorum *downy brome 40
20 Poace Schismus barbatus *Mediterranean schismus 20
21 Cucur Cucurbita palmata coyote melon 15
22 Eupho Croton californicus California croton 2
23 Aster Geraea viscida sticky geraea 1
24 Solan Solanum umbelliferum blue-witch nightshade 10
25 Erica Arctostaphylos pungens Mexican manzanita 30
26 Polyg Eriogonum fasciculatum var. polifolium California buckwheat 5
27 Agava Yucca schidigera Mohave yucca 30
28 Paeon Paeonia californica California peony RT
29 Cucur Marah macrocarpa wild-cucumber RT
30 Capri Lonicera subspicata var. denudata southern honeysuckle 3
31 Rhamn Rhamnus ilicifolia hollyleaf redberry 5
32 Rosac Adenostoma sparsifolium red shanks 99
33 Lamia Marrubium vulgare *horehound 10
34 Rosac Cercocarpus minutiflorus San Diego mountain mahogany 30
35 Aster Acourtia microcephala purple head 2
36 Apiac Tauschia arguta southern tauschia RT
37 Geran Erodium cicutarium *redstem filaree 99
38 Aster Uropappus lindleyi silver puffs 1
39 Fabac Lupinus bicolor dwarf lupine RT
40 Anaca Rhus ovata sugar bush 40
41 Cacta Cylindropuntia californica var. parkeri cane cholla 99
42 Brass Sisymbrium altissimum *tumble-mustard 20
43 Rubia Galium andrewsii ssp. andrewsii phlox-leaved bedstraw 5
44 Anaca Rhus aromatica basketbush 30
45 Borag Phacelia distans common phacelia RT
46 Aster Lasthenia gracilis goldfields RT
47 Lamia Trichostema parishii Parish's bluecurls 2
48 Aster Hazardia squarrosa var. grindelioides saw-toothed goldenbush 20
49 Aster Eriophyllum confertiflorum var. confertiflorum golden yarrow 20
50 Cheno Chenopodium californicum California goosefoot RT
51 Poace Hordeum murinum ssp. glaucum *foxtail barley RT
52 Brass Descurainia pinnata western tansy-mustard 5
53 Garry Garrya veatchii canyon silktassel 10
54 Aster Corethrogyne filaginifolia California-aster 50
55 Aster Ericameria brachylepis boundary goldenbush 20
56 Erica Arctostaphylos glandulosa Eastwood manzanita 1
57 Fagac Quercus cornelius-mulleri desert scrub oak 2
58 Eupho Chamaesyce micromera Sonoran spurge 99
59 Fagac Quercus agrifolia var. oxyadenia southern coast live oak 20
60 Cheno Chenopodium murale *nettle-leaved goosefoot 10
61 Solan Datura wrightii sacred datura 3
62 Plant Penstemon spectabilis var. spectabilis showy penstemon 1
63 Aster Artemisia dracunculus wild tarragon 50
64 Amara Amaranthus albus *tumble pigweed 99
65 Eupho Chamaesyce serpyllifolia ssp. serpyllifolia thyme-leafed spurge 20
66 Eupho Croton setigerus dove weed 3
67 Fabac Astragalus douglasii var. perstrictus Jacumba milk-vetch 4
68 Borag Pectocarya heterocarpa chuckwalla pectocarya RT
69 Polem Gilia capitata ssp. abrotanifolia globe gilia RT
70 Marty Proboscidea louisianica ssp. louisianica *common devil's claw 3
71 Cucur Cucurbita foetidissima stinking gourd 2
72 Aster Tetradymia comosa cotton-thorn 5
73 Rhamn Ceanothus cuneatus var. cuneatus buck brush 3
74 Cheno Atriplex canescens var. canescens four-wing saltbush 1
75 Cheno Chenopodium album *white goosefoot 3
76 Rhamn Rhamnus crocea redberry ~1
77 Pteri Pellaea mucronata var. mucronata bird's-foot fern 10
78 Fabac Acmispon argophyllus var. argophyllus southern California silver-lotus 50
79 Plant Antirrhinum nuttallianum ssp. nuttallianum purple snapdragon 3
80 Aster Baccharis sarothroides broom baccharis 1
81 Aster Pseudognaphalium microcephalum white everlasting 2
82 Pteri Pentagramma triangularis ssp. rebmanii Rebman's silverback fern 10
83 Aster Cirsium occidentale var. californicum California thistle 5
84 Rosac Prunus ilicifolia ssp. ilicifolia hollyleaf cherry 30
85 Rubia Galium porrigens var. porrigens graceful bedstraw 15
86 Rhamn Ceanothus leucodermis chaparral whitethorn 10
87 Polem Eriastrum densifolium giant woolly-star 20
88 Plant Penstemon centranthifolius scarlet bugler 3
89 Ephed Ephedra californica desert tea 1
90 Lamia Salvia apiana white sage 3
91 Erica Arctostaphylos glauca bigberry manzanita 5
92 Phrym Mimulus aurantiacus var. puniceus red bush monkeyflower 30
93 Rubia Galium angustifolium ssp. angustifolium narrowleaf bedstraw 10
94 Rosac Heteromeles arbutifolia toyon 3
95 Selag Selaginella bigelovii Bigelow's spike-moss 99
96 Brass Lepidium nitidum shining peppergrass sp1?
97 Plant Keckiella ternata var. ternata whorledleaf penstemon 5
98 Poace Festuca myuros *rattail fescue 5
99 Polyg Pterostegia drymarioides threadstem 1
100 Poace Aristida purpurea var. parishii Parish three-awn 30
101 Apiac Daucus pusillus rattlesnake weed 3
102 Aster Pseudognaphalium biolettii bicolored everlasting 1
103 Aster Brickellia californica California brickellbush 3
104 Borag Phacelia ramosissima branching phacelia 5
105 Portu Portulaca oleracea *common purslane 15
106 Aster Heterotheca grandiflora telegraph weed 20
107 Fabac Robinia pseudoacacia *black locust 1
108 Zygop Tribulus terrestris *puncture-vine 10
109 Aster Ambrosia acanthicarpa bur-ragweed 20
110 Eupho Chamaesyce maculata *spotted spurge 20
111 Poace Cynodon dactylon *Bermuda grass 30
112 Poace Sorghum halepense *johnsongrass 1
113 Pteri Cheilanthes covillei beady lipfern 3
114 Vitac Parthenocissus vitacea Virginia creeper 1
115 Polyg Eriogonum gracile var. gracile slender buckwheat 3
116 Aster Erigeron canadensis horseweed 1
117 Fabac Lathyrus splendens pride-of-California 3
118 Pteri Pentagramma triangularis ssp. triangularis goldback fern 2
119 Amara Amaranthus hybridus *slim amaranth 1
120 Cheno Salsola tragus *Russian thistle 10
121 Papav Eschscholzia californica California poppy 1
122 Borag Phacelia cicutaria var. hispida caterpillar phacelia RT
123 Onagr Eulobus californicus California suncup sp2
124 Papav Eschscholzia caespitosa tufted eschscholzia ~RT
125 Lamia Salvia columbariae chia 1
126 Poace Avena barbata *slender wild oats 99
127 Aster Chaenactis glabriuscula var. glabriuscula yellow pincushion RT
128 Salic Populus fremontii ssp. fremontii Fremont cottonwood 3
129 Pteri Cheilanthes clevelandii scaly lipfern 20
130 Apiac Lomatium dasycarpum ssp. dasycarpum woolly-fruited lomatium RT
131 Borag Eriodictyon trichocalyx var. lanatum smoothleaf yerba santa 30
132 Oleac Olea europaea *olive 1
133 Brass Boechera californica California elegant rock-cress ~5
134 Brass Caulanthus lasiophyllus California mustard RT
135 Themi Dichelostemma capitatum ssp. capitatum blue dicks RT
136 Crass Dudleya abramsii ssp. abramsii Abrams' dudleya 99
137 Poace Melica imperfecta coast-range melic 30
138 Onagr Clarkia delicata delicate clarkia RT
139 Brass Thysanocarpus curvipes fringe-pod spRT
140 Anaca Toxicodendron diversilobum poison oak 1
141 Ranun Clematis pauciflora virgin's bower sp1
142 Monti Claytonia parviflora ssp. parviflora narrow-leaved miner's lettuce spRT
143 Rhamn Ceanothus perplexans cupped-leaf ceanothus 25
144 Visca Phoradendron serotinum ssp. tomentosum oak mistletoe 10
145 Poace Stipa coronata giant needlegrass ~1
146 Plant Keckiella antirrhinoides var. antirrhinoides chaparral beardtongue 3
147 Aster Erigeron foliosus var. foliosus leafy daisy RT
148 Borag Phacelia parryi Parry's phacelia RT
149 Polyg Chorizanthe leptotheca Peninsular spineflower spRT
150 Phrym Mimulus brevipes wide-throated yellow monkeyflower RT
151 Plant Antirrhinum coulterianum Coulter's snapdragon RT
152 Crass Dudleya pulverulenta California chalk lettuce 3
153 Aster Rafinesquia californica California chicory RT
154 Aster Stylocline gnaphaloides everlasting nest-straw RT

#	Famil	Scientific Name	(*)Common Name	#Pls
1	Polyg	Eriogonum fasciculatum var. foliolosum	California buckwheat	99
2	Aster	Gutierrezia californica	California matchweed	99
3	Borag	Cryptantha intermedia var. intermedia	popcorn flower	spRT
4	Poace	Bromus madritensis ssp. rubens	*red brome	99
5	Fabac	Acmispon glaber var. brevialatus	short-winged deerweed	99
6	Rosac	Adenostoma fasciculatum	chamise	99
7	Convo	Cuscuta californica	California dodder	sp30
8	Agava	Hesperoyucca whipplei	chaparral yucca	30
9	Cacta	Opuntia phaeacantha	desert prickly-pear	10
10	Aster	Artemisia tridentata	big sagebrush	99
11	Polem	Eriastrum sapphirinum ssp. sapphirinum	sapphire woolly-star	sp5
12	Poace	Bromus diandrus	*ripgut brome	99
13	Borag	Amsinckia intermedia	common fiddleneck	spRT
14	Adoxa	Sambucus nigra ssp. caerulea	blue elderberry	2
15	Fagac	Quercus acutidens	Torrey's scrub oak	99
16	Poace	Bromus hordeaceus	*soft chess	RT
17	Aster	Stephanomeria exigua ssp. exigua	slender wreathplant	10
18	Brass	Hirschfeldia incana	*shortpod mustard	30
19	Poace	Bromus tectorum	*downy brome	40
20	Poace	Schismus barbatus	*Mediterranean schismus	20
21	Cucur	Cucurbita palmata	coyote melon	15
22	Eupho	Croton californicus	California croton	2
23	Aster	Geraea viscida	sticky geraea	1
24	Solan	Solanum umbelliferum	blue-witch nightshade	10
25	Erica	Arctostaphylos pungens	Mexican manzanita	30
26	Polyg	Eriogonum fasciculatum var. polifolium	California buckwheat	5
27	Agava	Yucca schidigera	Mohave yucca	30
28	Paeon	Paeonia californica	California peony	RT
29	Cucur	Marah macrocarpa	wild-cucumber	RT
30	Capri	Lonicera subspicata var. denudata	southern honeysuckle	3
31	Rhamn	Rhamnus ilicifolia	hollyleaf redberry	5
32	Rosac	Adenostoma sparsifolium	red shanks	99
33	Lamia	Marrubium vulgare	*horehound	10
34	Rosac	Cercocarpus minutiflorus	San Diego mountain mahogany	30
35	Aster	Acourtia microcephala	purple head	2
36	Apiac	Tauschia arguta	southern tauschia	RT
37	Geran	Erodium cicutarium	*redstem filaree	99
38	Aster	Uropappus lindleyi	silver puffs	1
39	Fabac	Lupinus bicolor	dwarf lupine	RT
40	Anaca	Rhus ovata	sugar bush	40
41	Cacta	Cylindropuntia californica var. parkeri	cane cholla	99
42	Brass	Sisymbrium altissimum	*tumble-mustard	20
43	Rubia	Galium andrewsii ssp. andrewsii	phlox-leaved bedstraw	5
44	Anaca	Rhus aromatica	basketbush	30
45	Borag	Phacelia distans	common phacelia	RT
46	Aster	Lasthenia gracilis	goldfields	RT
47	Lamia	Trichostema parishii	Parish's bluecurls	2
48	Aster	Hazardia squarrosa var. grindelioides	saw-toothed goldenbush	20
49	Aster	Eriophyllum confertiflorum var. confertiflorum	golden yarrow	20
50	Cheno	Chenopodium californicum	California goosefoot	RT
51	Poace	Hordeum murinum ssp. glaucum	*foxtail barley	RT
52	Brass	Descurainia pinnata	western tansy-mustard	5
53	Garry	Garrya veatchii	canyon silktassel	10
54	Aster	Corethrogyne filaginifolia	California-aster	50
55	Aster	Ericameria brachylepis	boundary goldenbush	20
56	Erica	Arctostaphylos glandulosa	Eastwood manzanita	1
57	Fagac	Quercus cornelius-mulleri	desert scrub oak	2
58	Eupho	Chamaesyce micromera	Sonoran spurge	99
59	Fagac	Quercus agrifolia var. oxyadenia	southern coast live oak	20
60	Cheno	Chenopodium murale	*nettle-leaved goosefoot	10
61	Solan	Datura wrightii	sacred datura	3
62	Plant	Penstemon spectabilis var. spectabilis	showy penstemon	1
63	Aster	Artemisia dracunculus	wild tarragon	50
64	Amara	Amaranthus albus	*tumble pigweed	99
65	Eupho	Chamaesyce serpyllifolia ssp. serpyllifolia	thyme-leafed spurge	20
66	Eupho	Croton setigerus	dove weed	3
67	Fabac	Astragalus douglasii var. perstrictus	Jacumba milk-vetch	4
68	Borag	Pectocarya heterocarpa	chuckwalla pectocarya	RT
69	Polem	Gilia capitata ssp. abrotanifolia	globe gilia	RT
70	Marty	Proboscidea louisianica ssp. louisianica	*common devil's claw	3
71	Cucur	Cucurbita foetidissima	stinking gourd	2
72	Aster	Tetradymia comosa	cotton-thorn	5
73	Rhamn	Ceanothus cuneatus var. cuneatus	buck brush	3
74	Cheno	Atriplex canescens var. canescens	four-wing saltbush	1
75	Cheno	Chenopodium album	*white goosefoot	3
76	Rhamn	Rhamnus crocea	redberry	~1
77	Pteri	Pellaea mucronata var. mucronata	bird's-foot fern	10
78	Fabac	Acmispon argophyllus var. argophyllus	southern California silver-lotus	50
79	Plant	Antirrhinum nuttallianum ssp. nuttallianum	purple snapdragon	3
80	Aster	Baccharis sarothroides	broom baccharis	1
81	Aster	Pseudognaphalium microcephalum	white everlasting	2
82	Pteri	Pentagramma triangularis ssp. rebmanii	Rebman's silverback fern	10
83	Aster	Cirsium occidentale var. californicum	California thistle	5
84	Rosac	Prunus ilicifolia ssp. ilicifolia	hollyleaf cherry	30
85	Rubia	Galium porrigens var. porrigens	graceful bedstraw	15
86	Rhamn	Ceanothus leucodermis	chaparral whitethorn	10
87	Polem	Eriastrum densifolium	giant woolly-star	20
88	Plant	Penstemon centranthifolius	scarlet bugler	3
89	Ephed	Ephedra californica	desert tea	1
90	Lamia	Salvia apiana	white sage	3
91	Erica	Arctostaphylos glauca	bigberry manzanita	5
92	Phrym	Mimulus aurantiacus var. puniceus	red bush monkeyflower	30
93	Rubia	Galium angustifolium ssp. angustifolium	narrowleaf bedstraw	10
94	Rosac	Heteromeles arbutifolia	toyon	3
95	Selag	Selaginella bigelovii	Bigelow's spike-moss	99
96	Brass	Lepidium nitidum	shining peppergrass	sp1?
97	Plant	Keckiella ternata var. ternata	whorledleaf penstemon	5
98	Poace	Festuca myuros	*rattail fescue	5
99	Polyg	Pterostegia drymarioides	threadstem	1
100	Poace	Aristida purpurea var. parishii	Parish three-awn	30
101	Apiac	Daucus pusillus	rattlesnake weed	3
102	Aster	Pseudognaphalium biolettii	bicolored everlasting	1
103	Aster	Brickellia californica	California brickellbush	3
104	Borag	Phacelia ramosissima	branching phacelia	5
105	Portu	Portulaca oleracea	*common purslane	15
106	Aster	Heterotheca grandiflora	telegraph weed	20
107	Fabac	Robinia pseudoacacia	*black locust	1
108	Zygop	Tribulus terrestris	*puncture-vine	10
109	Aster	Ambrosia acanthicarpa	bur-ragweed	20
110	Eupho	Chamaesyce maculata	*spotted spurge	20
111	Poace	Cynodon dactylon	*Bermuda grass	30
112	Poace	Sorghum halepense	*johnsongrass	1
113	Pteri	Cheilanthes covillei	beady lipfern	3
114	Vitac	Parthenocissus vitacea	Virginia creeper	1
115	Polyg	Eriogonum gracile var. gracile	slender buckwheat	3
116	Aster	Erigeron canadensis	horseweed	1
117	Fabac	Lathyrus splendens	pride-of-California	3
118	Pteri	Pentagramma triangularis ssp. triangularis	goldback fern	2
119	Amara	Amaranthus hybridus	*slim amaranth	1
120	Cheno	Salsola tragus	*Russian thistle	10
121	Papav	Eschscholzia californica	California poppy	1
122	Borag	Phacelia cicutaria var. hispida	caterpillar phacelia	RT
123	Onagr	Eulobus californicus	California suncup	sp2
124	Papav	Eschscholzia caespitosa	tufted eschscholzia	~RT
125	Lamia	Salvia columbariae	chia	1
126	Poace	Avena barbata	*slender wild oats	99
127	Aster	Chaenactis glabriuscula var. glabriuscula	yellow pincushion	RT
128	Salic	Populus fremontii ssp. fremontii	Fremont cottonwood	3
129	Pteri	Cheilanthes clevelandii	scaly lipfern	20
130	Apiac	Lomatium dasycarpum ssp. dasycarpum	woolly-fruited lomatium	RT
131	Borag	Eriodictyon trichocalyx var. lanatum	smoothleaf yerba santa	30
132	Oleac	Olea europaea	*olive	1
133	Brass	Boechera californica	California elegant rock-cress	~5
134	Brass	Caulanthus lasiophyllus	California mustard	RT
135	Themi	Dichelostemma capitatum ssp. capitatum	blue dicks	RT
136	Crass	Dudleya abramsii ssp. abramsii	Abrams' dudleya	99
137	Poace	Melica imperfecta	coast-range melic	30
138	Onagr	Clarkia delicata	delicate clarkia	RT
139	Brass	Thysanocarpus curvipes	fringe-pod	spRT
140	Anaca	Toxicodendron diversilobum	poison oak	1
141	Ranun	Clematis pauciflora	virgin's bower	sp1
142	Monti	Claytonia parviflora ssp. parviflora	narrow-leaved miner's lettuce	spRT
143	Rhamn	Ceanothus perplexans	cupped-leaf ceanothus	25
144	Visca	Phoradendron serotinum ssp. tomentosum	oak mistletoe	10
145	Poace	Stipa coronata	giant needlegrass	~1
146	Plant	Keckiella antirrhinoides var. antirrhinoides	chaparral beardtongue	3
147	Aster	Erigeron foliosus var. foliosus	leafy daisy	RT
148	Borag	Phacelia parryi	Parry's phacelia	RT
149	Polyg	Chorizanthe leptotheca	Peninsular spineflower	spRT
150	Phrym	Mimulus brevipes	wide-throated yellow monkeyflower	RT
151	Plant	Antirrhinum coulterianum	Coulter's snapdragon	RT
152	Crass	Dudleya pulverulenta	California chalk lettuce	3
153	Aster	Rafinesquia californica	California chicory	RT
154	Aster	Stylocline gnaphaloides	everlasting nest-straw	RT

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

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_flora_trail_order.html
Comments and feedback: Tom Chester
Updated 6 November 2014.