Plant Guide to Big Horn Mine Trail, Mt. Baden-Powell

This is a working list, about which we make no guarantees at all until we officially release it. Use at your own risk!

Introduction and Explanation of Plant Trail Guides

Introduction
Highlights of This Trail
Fieldwork Dates and Summary of List Changes With Time
The Plant Guide
Comments On Specific Species

Introduction

Highlights of This Trail

The botanical highlights of this trail are:

Number of Unique Taxa On This Trail

The following histogram gives the number of trails in our database that contain each taxon on this trail. We had 79 trails in our database when this histogram was made; three trails, including this one, are in this immediate area of the San Gabriel Mountains, with another two trails 2.4 miles east at Blue Ridge Summit. A number of "1" means the taxon has only been found on this trail among the trails in our database; numbers of "5" or smaller may indicate taxa found only in this general area of the San Gabriel Mountains.

Number of Trails
Containing A Taxon
Number Of Taxa
On This Trail
% of Taxa
On This Trail
133%
21210%
3108%
4108%
533%
 
1-53832%
6-104033%
11-151916%
16-2065%
21-2576%
26-3033%
31-3533%
36-4022%
41-4511%
46-5011%
Total Taxa120100%

We found 2 additional species not in the above table, since they have not been identified yet. The unidentified ones are marked with ? or sp in the id? column in the guide, and do not have any number given in the #all column.

Fieldwork Dates and Summary of List Changes With Time

The following table gives the dates the trail was walked and taxa recorded. After each visit, the table gives the total number of taxa on the list and the breakdown of the taxa without positive identification. See Explanation of Plant Trail Guides to understand the symbols below.

Visit DateVisit ## taxa# "?"# "sp"# "~"# "ssp"
5/28/20011     
6/15/20012     
7/10/20013     
7/25/20014     
8/10/2001511027   
9/9/2001611031   
5/1/2002712441  17
7/5/200281179307
6/12/200391144012
10/7/2003101172311
9/26/2004111222101

We did not use the categories of sp and ~ prior to 7/5/2002, and did not note which taxa needed ssp prior to 5/1/2002. Only the first 0.30 miles were surveyed on 10/7/03.

We thank Michael Charters for correcting an error for the Hieracium species on this trail, and for finding the Holodiscus microphyllus var. microphyllus, from fieldwork on 7/17/03.

The Plant Guide

Version for printing, without lines and other text on this page: html (6 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)

Mile#Sid?Common NameLatin Name#here#all
0.00   Gate (6580') with sign: "Road Closed Do Not Block Gate"
0.00l1 (no longer present) California fuchsiaEpilobium canum+99 / 912
0.00b2 *downy bromeBromus tectorum99 / 921
0.00l3 curl-leaf mountain-mahoganyCercocarpus ledifolius var. intermontanus10 / 910
0.00r4 canyon live oakQuercus chrysolepis50 / 920
0.00r5 *shortpod mustardHirschfeldia incana1 / 141
0.00b6 mountain sagebrushArtemisia tridentata ssp. vaseyana50 / 98
0.00t7 golden yarrowEriophyllum confertiflorum var. confertiflorum20 / 947
0.00r8 chaparral yuccaYucca whipplei5 / 225
0.00r9 arched elegant rock-cressArabis sparsiflora var. arcuata10 / 56
0.00r10 San Bernardino rubber rabbitbrushChrysothamnus nauseosus ssp. bernardinus+30 / 914
0.00r11 bur-ragweedAmbrosia acanthicarpa / 14
0.00r12 flannelbushFremontodendron californicum ssp. californicum30 / 96
0.01l13 beaked penstemonPenstemon rostriflorus30 / 912
0.01b14 western wallflowerErysimum capitatum ssp. capitatum5 / 516
0.02r15 sulphur buckwheatEriogonum umbellatum var. munzii20 / 99
0.02b16 leafy daisyErigeron foliosus var. foliosus30 / 434
0.02r17 naked buckwheatEriogonum nudum+99 / 97
0.02r  (southern mountain-monardella, Monardella australis, on top bank of drainage.)
0.02r  (California milkweed, Asclepias californica)
0.02 18 giant blazing starMentzelia laevicaulis+30 / 26
0.02l19 white firAbies concolor50 / 920
0.02r  (Martin's paintbrush, Castilleja applegatei ssp. martinii)
0.02l20 Jeffrey pinePinus jeffreyi / 21
0.03   Cross drainage.
0.03r21 Nevin's bird's beakCordylanthus nevinii20 / 57
0.03r22 *tumble-mustardSisymbrium altissimum5 / 29
0.03r  California fuchsiaEpilobium canum+ /  
0.03r23 mountain tansy-mustardDescurainia incisa ssp. incisa3 / 12
0.03l24sspsquirreltailElymus elymoides30 / 36
0.03r25 santolina pincushionChaenactis santolinoides20 / 28
0.04r  giant blazing starMentzelia laevicaulis+30 / 5 
0.04b26 Martin's paintbrushCastilleja applegatei ssp. martinii30 / 514
0.04r  (Virgin's bower, Clematis ligusticifolia, uphill.)
0.05r27 goldenrodSolidago californica / 27
0.05l28 incense-cedarCalocedrus decurrens / 12
0.05   Cross small drainage.
0.05r29 nodding bedstrawGalium hallii30 / 53
0.05r30 mountain pink currantRibes nevadense3 / 36
0.05r31 *orchard-grassDactylis glomerata5 / 11
0.05r32 Wright's collinsiaCollinsia torreyi var. wrightii20 / 14
0.05r sp(gooseberry, Ribes sp.)
0.05r33 sticky cinquefoilPotentilla glandulosa ssp. reflexa5 / 110
0.05r34 wild tarragonArtemisia dracunculus30 / 921
0.05r35 white catch-flySilene verecunda ssp. platyota10 / 38
0.05 36 pinegrove groundsmokeGayophytum oligospermum20 / 28
0.06r37 (no longer present) arroyo willowSalix lasiolepis+5 / 329
0.07 38 Orcutt's bromeBromus orcuttianus+10 / 26
0.07r39 *Russian thistleSalsola tragus2 / 124
0.08r40 prickly cryptanthaCryptantha echinella10 / 13
 r41 blue dicksDichelostemma capitatum ssp. capitatum10 / 532
 r42 spreading larkspurDelphinium patens ssp. montanum50 / 54
 r43 rock melicaMelica stricta30 / 93
0.12l44 blue elderberrySambucus mexicana3 / 339
0.12l45 western choke-cherryPrunus virginiana var. demissa30 / 36
0.13r46 Sierra gooseberryRibes roezlii var. roezlii3 / 28
 l47 virgin's bowerClematis ligusticifolia20 / 19
0.14r48 Parish's tauschiaTauschia parishii4 / 24
0.15r49 Fremont's goosefootChenopodium fremontii10 / 210
0.18l  Trailhead for Mine Gulch Trail
0.18r50 California buckwheatEriogonum fasciculatum var. polifolium30 / 314
0.18r51 Grinnell's beardtonguePenstemon grinnellii var. grinnellii10 / 915
0.18r52 California milkweedAsclepias californica2 / 12
0.18r53 California broomrapeOrobanche californica ssp. feudgei1 / 12
 r54 California coffeeberryRhamnus californica ssp. californica10 / 911
0.19b55 smoothleaf yerba santaEriodictyon trichocalyx var. trichocalyx50 / 98
0.19   Cross first branch of a drainage.
 l  A good display of virgin's bower, Clematis ligusticifolia.
0.19 56 California dodderCuscuta californica var. californica+10 / 213
0.19r57 (plain mariposa lily, Calochortus invenustus)
0.19r58 woodland bromeBromus laevipes30 / 92
0.20r59 southern mountain woolly-starEriastrum densifolium ssp. austromontanum+1 / 110
0.20 60 western morning-gloryCalystegia occidentalis ssp. fulcrata / 7
0.20r61 spreading dogbaneApocynum androsaemifolium40 / 13
0.21   Cross second branch of drainage
0.21r62 mountain whitethornCeanothus cordulatus30 / 914
0.22r63 wax currantRibes cereum var. cereum1 / 111
0.23r64 Utah service-berryAmelanchier utahensis10 / 37
0.25r  Dogbane hill
0.26 65 pine lousewortPedicularis semibarbata1 / 19
 l66 spear-leaved mountain dandelionAgoseris retrorsa5 / 311
0.27l67 sugar pinePinus lambertiana / 12
0.27l  Orcutt's bromeBromus orcuttianus+10 / 1 
0.27r68 Yosemite rockcressArabis repanda var. repanda30 / 53
0.27 69 ponderosa pinePinus ponderosa / 3
0.28b70 silky lupineLupinus elatus4 / 25
0.28r  arroyo willowSalix lasiolepis+ /  
0.28r71 deer brushCeanothus integerrimus5 / 54
0.28r  Arroyo willow (Salix lasiolepis)  with oblanceolate leaves; compare to the previously-noted one with the usual elliptic leaves (see pix).
0.29r72 slender wreathplantStephanomeria exigua ssp. coronaria1 / 12
 l73 fir mistletoePhoradendron pauciflorum / 10
 r74 southern miner's lettuceClaytonia perfoliata ssp. mexicana10 / 116
 r75 miner's lettuceClaytonia perfoliata ssp. perfoliata10 / 114
0.29r76 snow-plantSarcodes sanguinea1 / 14
0.29r77 southern mountain-monardellaMonardella australis5 / 37
0.30r78 California brickellbushBrickellia californica10 / 326
0.31r79 diamond-petaled clarkiaClarkia rhomboidea50 / 14
 r80?Phacelia or Gilia sp.?21
0.33r81 one-sided bluegrassPoa secunda ssp. secunda50 / 521
0.33r82 ashy silk tasselGarrya flavescens1 / 16
0.34l83 prickly poppyArgemone munita10 / 26
0.37r84 twiggy wreath plantStephanomeria virgata1 / 18
 r85 purple nightshadeSolanum xanti10 / 312
  86?oak mistletoePhoradendron villosum / 3
0.42r87 bigleaf mapleAcer macrophyllum5 / 37
0.43   Cross drainage; road turns left
0.46l88 prickly cryptanthaCryptantha muricata20 / 112
  89 fir dwarf-mistletoeArceuthobium abietinum / 2
0.55r90 white hawkweedHieracium albiflorum2 / 22
 r91 silver puffsUropappus lindleyi2 / 119
0.66r  Exposures of gneiss rock on right for next 0.01 mile; trail curves right 90°
0.71   Trail curves left 45°
0.83l92 Parry manzanitaArctostaphylos parryana2 / 14
0.83   Low point on trail (6450'); View opens up, with good view of Mt. Baldy area; road turns right toward major gully
0.83l93 threadleaf common rabbitbrushChrysothamnus nauseosus ssp. consimilis+50 / 97
  94 (no longer present) scarlet monkeyflowerMimulus cardinalis+20 / 39
0.89b  Many giant blazing stars (Mentzelia laevicaulis) here.
0.91r95 big squirreltailElymus multisetus20 / 35
 r96 long-stalk phaceliaPhacelia longipes10 / 22
 r97 clasping-leaved caulanthusCaulanthus amplexicaulis var. amplexicaulis10 / 22
0.92r98 wire-lettuceStephanomeria pauciflora var. pauciflora3 / 14
0.92r  Small seep, creating a small seasonally-wet area.
0.92r99 western vervainVerbena lasiostachys var. lasiostachys5 / 13
0.92r100 floriferous monkeyflowerMimulus floribundus20 / 11
0.94l101 California thistleCirsium occidentale var. californicum+10 / 210
0.95   Gully (6470'). (no longer present white-bark raspberry, Rubus leucodermis, just up the drainage.)+
0.95r102 (no longer present) Fremont cottonwoodPopulus fremontii ssp. fremontii+1 / 18
0.95r103 (no longer present) narrowleaf willowSalix exigua+1 / 15
0.95r  (Check for different Cryptantha here; observed only two plants in 2003 that appeared to have 3 flattened flowers per node.)
0.99r  Arroyo willow with male and female flowers on same plant! Each sex with ~6' long branch stemming from a common base.
    (Poodle-dog bush, Turricula parryi, just below the trail.)
1.01r104 scattered blazing starMentzelia dispersa20 / 13
1.03r105 white-bark raspberryRubus leucodermis10 / 33
1.05r106 branching phaceliaPhacelia ramosissima var. latifolia10 / 125
1.08   Open gate with very faded words "Keep out - no trespassing" on it
1.09r  Best prickly poppy (Argemone munita) area.
1.13r  Cut on ridgeline with schist and exposed rock; trail turns right 90°
1.18b107 Davidson's buckwheatEriogonum davidsonii30 / 318
1.19r108 *bulbous blue grassPoa bulbosa2 / 12
1.19   Exposed part of trail - watch children!
1.24   Short wet area on trail due to water draining from a mine tunnel.
1.24r109 wrinkled rushJuncus rugulosus20 / 11
1.24r  scarlet monkeyflowerMimulus cardinalis+ /  
1.24r  Tunnel
1.24r110 mountain sprayHolodiscus microphyllus var. microphyllus+1 / 17
1.24   Trail climbs over rocks deposited in early 2003 for 0.01 mile.
1.27r  Check for second occurrence of bur-ragweed, Ambrosia acanthicarpa.
1.36   Tricky spot at boulder; exposed on downhill side of boulder; use trail on right side of boulder.
1.37l111 bigcone-sprucePseudotsuga macrocarpa2 / 26
1.43r112 white-veined wintergreenPyrola picta1 / 12
1.55r113 Davidson's lotusLotus nevadensis var. davidsonii10 / 17
1.56   Y Junction (6800'). Left to foundation; go right to Big Horn Mine.
1.57r114 Wright's buckwheatEriogonum wrightii var. subscaposum5 / 113
1.57l115 chaparral whitethornCeanothus leucodermis1 / 112
1.59b  California thistleCirsium occidentale var. californicum+ /  
1.60r116 naked-stem bedstrawGalium angustifolium ssp. nudicaule10 / 24
1.63r117 erect goldenasterHeterotheca sessiliflora ssp. fastigiata3 / 14
1.65   Half a gate.
1.68r118 Johnston's monkeyflowerMimulus johnstonii+2 / 12
1.72r119 bush monkeyflowerMimulus aurantiacus5 / 235
1.73r120 chicory-leaved stephanomeriaStephanomeria cichoriacea5 / 26
1.77r  Short tunnel
1.77 121 *(no longer present) redstem filareeErodium cicutarium+2 / 140
1.79l122 (no longer present) black cottonwoodPopulus balsamifera ssp. trichocarpa+1 / 16
1.79   Mine (6840'). Turnaround
1.79l  (California everlasting, Gnaphalium californicum+)

Comments On Specific Species

Epilobium canum, Mentzelia laevicaulis, Bromus orcuttianus, Gayophytum diffusum ssp. parviflorum, Hieracium albiflorum, Mimulus cardinalis, Cirsium occidentale var. californicum, Rubus leucodermis, Populus fremontii ssp. fremontii, Salix exigua, Erodium cicutarium. The first occurrence of all of these species in 2001 and 2002 is no longer present in 2003. The first occurrence in 2003 is noted separately, and not numbered. The last three species were no longer present on the trail in 2003. Evidently, the rains of early 2003 scoured out the gully at mile 0.95, removing the Populus fremontii ssp. fremontii and Salix exigua.

Chrysothamnus nauseosus ssp. bernardinus and ssp. consimilis. All specimens in the first 0.83 miles are ssp. bernardinus (note the leafy plants with leaves 1-3 mm wide and a markedly white stem); all specimens after that are ssp. consimilis (not-so-leafy plants, often losing their leaves at bloom time, with threadlike leaves and a white-green stem). The difference is the habitat. The first part of the trail is mostly a shady north-facing slope, mostly under pines. The second part of the trail is mostly an open, sunny, east-facing slope.

Eriogonum nudum. The plants in this area of the San Gabriel Mountains are intermediate between sspp. pauciflorum and westonii. Hence we cannot assign them to either of these subspecies.

Salix lasiolepis. The first occurrence of this species was a young plant which was missing in 2004; the first occurrence of an adult plant is noted separately. These first two specimens have the usual nearly-symmetric leaf normal at lower elevations; the formerly-separate ssp that has oblanceolate leaves, found at higher elevations, is noted. This is not Salix scouleriana, since the ovary is glabrous! See pix of the leaves from the two specimens.
The fourth appearance above notes a very interesting single plant containing both male and female flowers! Each sex appears on a separate ~6' long branch stemming from a common base. We have pictures of this specimen in bloom.

Cuscuta californica var. californica. The id comes from plants near mile 1.00.

Eriastrum densifolium ssp. austromontanum. We treat ssp. elongatum as part of ssp. austromontanum, following blue Munz, since we generally find plants that have bracts that are 3-5 lobed, fitting ssp. elongatum, but have well over 15 flowers per head, fitting ssp. austromontanum. This is usually a symptom that the subspecies are not truly distinct.

Holodiscus microphyllus var. microphyllus. The single plant here is sometimes covered up by the Rubus leucodermis.

Mimulus johnstonii. A single plant was also seen earlier along the trail in 2001, but the location was not recorded. It was perhaps near mile 1.37, just after the "tricky spot at boulder".

Gnaphalium californicum. It is nearly unbelievable that there is a single plant of this species at this elevation of 6840 feet (2085 m), since the highest we have seen this species is 3900 feet, and Munz says it goes up only to 4500 feet. But there is no mistaking this plant; the identification is clear. We suspect this might be a waif brought in by hikers or horses.


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Copyright © 2002-2004 by Tom Chester and Jane Strong.
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Comments and feedback: Tom Chester | Jane Strong
Updated 30 September 2004.