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 TaxonNumber Of Taxa
On This Trail% of Taxa
On This Trail1 3 3% 2 12 10% 3 10 8% 4 10 8% 5 3 3% 1-5 38 32% 6-10 40 33% 11-15 19 16% 16-20 6 5% 21-25 7 6% 26-30 3 3% 31-35 3 3% 36-40 2 2% 41-45 1 1% 46-50 1 1% Total Taxa 120 100% 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 Date Visit # # taxa # "?" # "sp" # "~" # "ssp" 5/28/2001 1 6/15/2001 2 7/10/2001 3 7/25/2001 4 8/10/2001 5 110 27 9/9/2001 6 110 31 5/1/2002 7 124 41 17 7/5/2002 8 117 9 3 0 7 6/12/2003 9 114 4 0 1 2 10/7/2003 10 117 2 3 1 1 9/26/2004 11 122 2 1 0 1 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 # S id? Common Name Latin Name #here #all 0.00 Gate (6580') with sign: "Road Closed Do Not Block Gate" 0.00 l 1 (no longer present) California fuchsia Epilobium canum+ 99 / 9 12 0.00 b 2 *downy brome Bromus tectorum 99 / 9 21 0.00 l 3 curl-leaf mountain-mahogany Cercocarpus ledifolius var. intermontanus 10 / 9 10 0.00 r 4 canyon live oak Quercus chrysolepis 50 / 9 20 0.00 r 5 *shortpod mustard Hirschfeldia incana 1 / 1 41 0.00 b 6 mountain sagebrush Artemisia tridentata ssp. vaseyana 50 / 9 8 0.00 t 7 golden yarrow Eriophyllum confertiflorum var. confertiflorum 20 / 9 47 0.00 r 8 chaparral yucca Yucca whipplei 5 / 2 25 0.00 r 9 arched elegant rock-cress Arabis sparsiflora var. arcuata 10 / 5 6 0.00 r 10 San Bernardino rubber rabbitbrush Chrysothamnus nauseosus ssp. bernardinus+ 30 / 9 14 0.00 r 11 bur-ragweed Ambrosia acanthicarpa / 14 0.00 r 12 flannelbush Fremontodendron californicum ssp. californicum 30 / 9 6 0.01 l 13 beaked penstemon Penstemon rostriflorus 30 / 9 12 0.01 b 14 western wallflower Erysimum capitatum ssp. capitatum 5 / 5 16 0.02 r 15 sulphur buckwheat Eriogonum umbellatum var. munzii 20 / 9 9 0.02 b 16 leafy daisy Erigeron foliosus var. foliosus 30 / 4 34 0.02 r 17 naked buckwheat Eriogonum nudum+ 99 / 9 7 0.02 r (southern mountain-monardella, Monardella australis, on top bank of drainage.) 0.02 r (California milkweed, Asclepias californica) 0.02 18 giant blazing star Mentzelia laevicaulis+ 30 / 2 6 0.02 l 19 white fir Abies concolor 50 / 9 20 0.02 r (Martin's paintbrush, Castilleja applegatei ssp. martinii) 0.02 l 20 Jeffrey pine Pinus jeffreyi / 21 0.03 Cross drainage. 0.03 r 21 Nevin's bird's beak Cordylanthus nevinii 20 / 5 7 0.03 r 22 *tumble-mustard Sisymbrium altissimum 5 / 2 9 0.03 r California fuchsia Epilobium canum+ / 0.03 r 23 mountain tansy-mustard Descurainia incisa ssp. incisa 3 / 1 2 0.03 l 24 ssp squirreltail Elymus elymoides 30 / 3 6 0.03 r 25 santolina pincushion Chaenactis santolinoides 20 / 2 8 0.04 r giant blazing star Mentzelia laevicaulis+ 30 / 5 0.04 b 26 Martin's paintbrush Castilleja applegatei ssp. martinii 30 / 5 14 0.04 r (Virgin's bower, Clematis ligusticifolia, uphill.) 0.05 r 27 goldenrod Solidago californica / 27 0.05 l 28 incense-cedar Calocedrus decurrens / 12 0.05 Cross small drainage. 0.05 r 29 nodding bedstraw Galium hallii 30 / 5 3 0.05 r 30 mountain pink currant Ribes nevadense 3 / 3 6 0.05 r 31 *orchard-grass Dactylis glomerata 5 / 1 1 0.05 r 32 Wright's collinsia Collinsia torreyi var. wrightii 20 / 1 4 0.05 r sp (gooseberry, Ribes sp.) 0.05 r 33 sticky cinquefoil Potentilla glandulosa ssp. reflexa 5 / 1 10 0.05 r 34 wild tarragon Artemisia dracunculus 30 / 9 21 0.05 r 35 white catch-fly Silene verecunda ssp. platyota 10 / 3 8 0.05 36 pinegrove groundsmoke Gayophytum oligospermum 20 / 2 8 0.06 r 37 (no longer present) arroyo willow Salix lasiolepis+ 5 / 3 29 0.07 38 Orcutt's brome Bromus orcuttianus+ 10 / 2 6 0.07 r 39 *Russian thistle Salsola tragus 2 / 1 24 0.08 r 40 prickly cryptantha Cryptantha echinella 10 / 1 3 r 41 blue dicks Dichelostemma capitatum ssp. capitatum 10 / 5 32 r 42 spreading larkspur Delphinium patens ssp. montanum 50 / 5 4 r 43 rock melica Melica stricta 30 / 9 3 0.12 l 44 blue elderberry Sambucus mexicana 3 / 3 39 0.12 l 45 western choke-cherry Prunus virginiana var. demissa 30 / 3 6 0.13 r 46 Sierra gooseberry Ribes roezlii var. roezlii 3 / 2 8 l 47 virgin's bower Clematis ligusticifolia 20 / 1 9 0.14 r 48 Parish's tauschia Tauschia parishii 4 / 2 4 0.15 r 49 Fremont's goosefoot Chenopodium fremontii 10 / 2 10 0.18 l Trailhead for Mine Gulch Trail 0.18 r 50 California buckwheat Eriogonum fasciculatum var. polifolium 30 / 3 14 0.18 r 51 Grinnell's beardtongue Penstemon grinnellii var. grinnellii 10 / 9 15 0.18 r 52 California milkweed Asclepias californica 2 / 1 2 0.18 r 53 California broomrape Orobanche californica ssp. feudgei 1 / 1 2 r 54 California coffeeberry Rhamnus californica ssp. californica 10 / 9 11 0.19 b 55 smoothleaf yerba santa Eriodictyon trichocalyx var. trichocalyx 50 / 9 8 0.19 Cross first branch of a drainage. l A good display of virgin's bower, Clematis ligusticifolia. 0.19 56 California dodder Cuscuta californica var. californica+ 10 / 2 13 0.19 r 57 (plain mariposa lily, Calochortus invenustus) 0.19 r 58 woodland brome Bromus laevipes 30 / 9 2 0.20 r 59 southern mountain woolly-star Eriastrum densifolium ssp. austromontanum+ 1 / 1 10 0.20 60 western morning-glory Calystegia occidentalis ssp. fulcrata / 7 0.20 r 61 spreading dogbane Apocynum androsaemifolium 40 / 1 3 0.21 Cross second branch of drainage 0.21 r 62 mountain whitethorn Ceanothus cordulatus 30 / 9 14 0.22 r 63 wax currant Ribes cereum var. cereum 1 / 1 11 0.23 r 64 Utah service-berry Amelanchier utahensis 10 / 3 7 0.25 r Dogbane hill 0.26 65 pine lousewort Pedicularis semibarbata 1 / 1 9 l 66 spear-leaved mountain dandelion Agoseris retrorsa 5 / 3 11 0.27 l 67 sugar pine Pinus lambertiana / 12 0.27 l Orcutt's brome Bromus orcuttianus+ 10 / 1 0.27 r 68 Yosemite rockcress Arabis repanda var. repanda 30 / 5 3 0.27 69 ponderosa pine Pinus ponderosa / 3 0.28 b 70 silky lupine Lupinus elatus 4 / 2 5 0.28 r arroyo willow Salix lasiolepis+ / 0.28 r 71 deer brush Ceanothus integerrimus 5 / 5 4 0.28 r Arroyo willow (Salix lasiolepis) with oblanceolate leaves; compare to the previously-noted one with the usual elliptic leaves (see pix). 0.29 r 72 slender wreathplant Stephanomeria exigua ssp. coronaria 1 / 1 2 l 73 fir mistletoe Phoradendron pauciflorum / 10 r 74 southern miner's lettuce Claytonia perfoliata ssp. mexicana 10 / 1 16 r 75 miner's lettuce Claytonia perfoliata ssp. perfoliata 10 / 1 14 0.29 r 76 snow-plant Sarcodes sanguinea 1 / 1 4 0.29 r 77 southern mountain-monardella Monardella australis 5 / 3 7 0.30 r 78 California brickellbush Brickellia californica 10 / 3 26 0.31 r 79 diamond-petaled clarkia Clarkia rhomboidea 50 / 1 4 r 80 ? Phacelia or Gilia sp.?21 0.33 r 81 one-sided bluegrass Poa secunda ssp. secunda 50 / 5 21 0.33 r 82 ashy silk tassel Garrya flavescens 1 / 1 6 0.34 l 83 prickly poppy Argemone munita 10 / 2 6 0.37 r 84 twiggy wreath plant Stephanomeria virgata 1 / 1 8 r 85 purple nightshade Solanum xanti 10 / 3 12 86 ? oak mistletoe Phoradendron villosum / 3 0.42 r 87 bigleaf maple Acer macrophyllum 5 / 3 7 0.43 Cross drainage; road turns left 0.46 l 88 prickly cryptantha Cryptantha muricata 20 / 1 12 89 fir dwarf-mistletoe Arceuthobium abietinum / 2 0.55 r 90 white hawkweed Hieracium albiflorum 2 / 2 2 r 91 silver puffs Uropappus lindleyi 2 / 1 19 0.66 r Exposures of gneiss rock on right for next 0.01 mile; trail curves right 90° 0.71 Trail curves left 45° 0.83 l 92 Parry manzanita Arctostaphylos parryana 2 / 1 4 0.83 Low point on trail (6450'); View opens up, with good view of Mt. Baldy area; road turns right toward major gully 0.83 l 93 threadleaf common rabbitbrush Chrysothamnus nauseosus ssp. consimilis+ 50 / 9 7 94 (no longer present) scarlet monkeyflower Mimulus cardinalis+ 20 / 3 9 0.89 b Many giant blazing stars (Mentzelia laevicaulis) here. 0.91 r 95 big squirreltail Elymus multisetus 20 / 3 5 r 96 long-stalk phacelia Phacelia longipes 10 / 2 2 r 97 clasping-leaved caulanthus Caulanthus amplexicaulis var. amplexicaulis 10 / 2 2 0.92 r 98 wire-lettuce Stephanomeria pauciflora var. pauciflora 3 / 1 4 0.92 r Small seep, creating a small seasonally-wet area. 0.92 r 99 western vervain Verbena lasiostachys var. lasiostachys 5 / 1 3 0.92 r 100 floriferous monkeyflower Mimulus floribundus 20 / 1 1 0.94 l 101 California thistle Cirsium occidentale var. californicum+ 10 / 2 10 0.95 Gully (6470'). (no longer present white-bark raspberry, Rubus leucodermis, just up the drainage.)+ 0.95 r 102 (no longer present) Fremont cottonwood Populus fremontii ssp. fremontii+ 1 / 1 8 0.95 r 103 (no longer present) narrowleaf willow Salix exigua+ 1 / 1 5 0.95 r (Check for different Cryptantha here; observed only two plants in 2003 that appeared to have 3 flattened flowers per node.) 0.99 r 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.) 1.01 r 104 scattered blazing star Mentzelia dispersa 20 / 1 3 1.03 r 105 white-bark raspberry Rubus leucodermis 10 / 3 3 1.05 r 106 branching phacelia Phacelia ramosissima var. latifolia 10 / 1 25 1.08 Open gate with very faded words "Keep out - no trespassing" on it 1.09 r Best prickly poppy (Argemone munita) area. 1.13 r Cut on ridgeline with schist and exposed rock; trail turns right 90° 1.18 b 107 Davidson's buckwheat Eriogonum davidsonii 30 / 3 18 1.19 r 108 *bulbous blue grass Poa bulbosa 2 / 1 2 1.19 Exposed part of trail - watch children! 1.24 Short wet area on trail due to water draining from a mine tunnel. 1.24 r 109 wrinkled rush Juncus rugulosus 20 / 1 1 1.24 r scarlet monkeyflower Mimulus cardinalis+ / 1.24 r Tunnel 1.24 r 110 mountain spray Holodiscus microphyllus var. microphyllus+ 1 / 1 7 1.24 Trail climbs over rocks deposited in early 2003 for 0.01 mile. 1.27 r 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. 1.37 l 111 bigcone-spruce Pseudotsuga macrocarpa 2 / 2 6 1.43 r 112 white-veined wintergreen Pyrola picta 1 / 1 2 1.55 r 113 Davidson's lotus Lotus nevadensis var. davidsonii 10 / 1 7 1.56 Y Junction (6800'). Left to foundation; go right to Big Horn Mine. 1.57 r 114 Wright's buckwheat Eriogonum wrightii var. subscaposum 5 / 1 13 1.57 l 115 chaparral whitethorn Ceanothus leucodermis 1 / 1 12 1.59 b California thistle Cirsium occidentale var. californicum+ / 1.60 r 116 naked-stem bedstraw Galium angustifolium ssp. nudicaule 10 / 2 4 1.63 r 117 erect goldenaster Heterotheca sessiliflora ssp. fastigiata 3 / 1 4 1.65 Half a gate. 1.68 r 118 Johnston's monkeyflower Mimulus johnstonii+ 2 / 1 2 1.72 r 119 bush monkeyflower Mimulus aurantiacus 5 / 2 35 1.73 r 120 chicory-leaved stephanomeria Stephanomeria cichoriacea 5 / 2 6 1.77 r Short tunnel 1.77 121 *(no longer present) redstem filaree Erodium cicutarium+ 2 / 1 40 1.79 l 122 (no longer present) black cottonwood Populus balsamifera ssp. trichocarpa+ 1 / 1 6 1.79 Mine (6840'). Turnaround 1.79 l (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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Updated 30 September 2004.