Plant Guide to Seven Pines / Marion Mountain Trail Loop, San Jacinto Mountains 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
Botanical Trip Reports
The Plant Guide
Comments On Specific Species
Introduction This is a 6.1 mile loop hike, with 2530 feet of elevation gain and 2550 feet of elevation loss, that requires a car shuttle between the Marion Mountain Trailhead and the Seven Pines Trailhead. The one-way car shuttle takes about 15 minutes. Part of the shuttle route is a dirt road that can be easily navigated by high-clearance normal passenger cars.
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 (not including the taxa seen only off-trail given at the end of the guide). We had 106 trails in our database when this histogram was made; 9 of those trails, including this one, are in this area of San Jacinto Mountain. A number of "1" means the taxon has only been found on this trail among the trails in our database; numbers of "9" or smaller may indicate taxa found only in this area of San Jacinto Mountain.
Number of Trails
Containing A TaxonNumber Of Taxa
On This Trail% of Taxa
On This Trail1 2 3% 2 1 1% 3 1 1% 4 1 1% 5 4 5% 1-5 9 11% 6-10 34 43% 11-15 14 18% 16-20 10 13% 21-25 6 8% 26-30 3 4% 31-35 2 3% 36-40 0 0% 41-45 1 1% 46-50 0 0% 51-55 1 1% Total Taxa 80 100% We found 7 additional species not in the above table, since they have not been fully identified yet. The unidentified ones are marked with ? or sp in the id? column in the guide, and have no entries 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" 7/20/2007 1 87 2 4 11 5
Botanical Trip Reports
The Plant Guide Version for printing, without lines and other text on this page: html (5 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)
The mileages in the guide come from Topo!. The total mileage is almost surely slightly underestimated, probably by no more than 10%, due to the tight switchbacks on the trail that are not accurately measured by that program. The elevations come from the topo map, and should be fairly precise.
The guide below does not give most of the switchbacks and other such trail landmarks, since there were way too many of them to record on our first day of fieldwork.
Mile S # id? Common Name Latin Name #here #all 0.00 Begin trail at northern end of parking area, at saddle between Fuller Creek and North Fork, elevation 6300 feet (1920 m) 0.00 b 1 sp annual buckwheat Eriogonum molestum or davidsonii 20 / 2 0.00 b 2 Sierra Nevada lotus Lotus nevadensis var. nevadensis 30 / 3 10 0.00 b 3 southern mountain woolly-star Eriastrum densifolium ssp. austromontanum 10 / 1 14 0.00 l 4 *downy brome Bromus tectorum 20 / 2 30 0.00 l Sign: "Seven Pines Trail; Deer Springs Trail 3.5 miles; Mt. San Jacinto 9.25 miles" 0.00 l 5 ssp squirreltail Elymus elymoides 30 / 5 11 0.00 b 6 ? unk annual like Gilia ? 20 / 2 0.00 b 7 pink-bracted manzanita Arctostaphylos pringlei ssp. drupacea 30 / 5 7 0.00 l 8 ~ purple-root cryptantha Cryptantha micrantha 1 / 1 9 0.00 b (incense-cedar, Calocedrus decurrens; incense-cedar mistletoe, Phoradendron libocedri) 0.00 l (white fir, Abies concolor; Coulter pine, Pinus coulteri) 0.00 r (canyon live oak, Quercus chrysolepis; oak mistletoe, Phoradendron villosum) 0.00 9 ponderosa pine Pinus ponderosa 20 / 9 5 0.00 r 10 Wright's buckwheat Eriogonum wrightii var. membranaceum 40 / 9 7 0.00 l 11 canyon live oak Quercus chrysolepis 50 / 9 31 0.01 l Sign: "Fragile habitat; Creek Closure" 0.01 l 12 short-flowered monardella Monardella nana ssp. tenuiflora+ 40 / 9 5 0.01 l Sign: "Wilderness Permit Required" 0.01 l 13 sugar pine Pinus lambertiana 99 / 9 18 0.02 l 14 sulphur buckwheat Eriogonum umbellatum var. munzii 30 / 9 11 0.02 l 15 San Bernardino rubber rabbitbrush Chrysothamnus nauseosus ssp. bernardinus 50 / 9 21 0.03 l 16 Coulter pine Pinus coulteri 20 / 9 14 0.03 b 17 California fuchsia Epilobium canum 99 / 9 22 The first specimen of the following species on trail was not recorded: 18 white fir Abies concolor 99 / 9 25 0.05 b 19 oak mistletoe Phoradendron villosum 10 / 9 10 0.07 r 20 Parish's tauschia Tauschia parishii 2 / 1 6 0.09 l 21 San Jacinto Mtns. bedstraw Galium angustifolium ssp. jacinticum 30 / 9 3 0.12 First of two close local high points on trail 0.23 Local high point; cross divide for a brief sojourn in canyon of North Fork before returning to Fuller Creek canyon 0.36 r (western azalea, Rhododendron occidentale; snow-plant, Sarcodes sanguinea) 0.37 r 22 California black oak Quercus kelloggii 3 / 3 16 0.37 r 23 sugar pine dwarf-mistletoe Arceuthobium californicum 1 / 1 1 0.39 l 24 pinedrops Pterospora andromedea 10 / 9 12 0.39 r 25 rock buckwheat Eriogonum saxatile 1 / 1 14 0.43 l 26 snow-plant Sarcodes sanguinea 2 / 2 11 0.60 l ~ (mountain whitethorn, Ceanothus cordulatus; ~Scouler's willow, ~Salix scouleriana) 0.60 r 27 ~ beaked penstemon Penstemon rostriflorus 50 / 9 16 0.72 Local high point; cross saddle for another brief sojourn in canyon of North Fork 0.74 l 28 Jeffrey pine Pinus jeffreyi 99 / 9 27 0.75 Switchback left 0.78 r (green-leaf manzanita, Arctostaphylos patula) 0.81 r 29 spotted coralroot Corallorhiza maculata 3 / 1 8 0.81 Switchback left 0.84 Switchback right 0.85 Switchback left 1.02 Local high point; elevation ~7100 feet (2164 m); cross small saddle and enter North Fork Canyon for rest of trip 1.03 r 30 mountain whitethorn Ceanothus cordulatus 99 / 9 21 1.04 l (rock goldenbush, Ericameria cuneata var. cuneata) 1.07 Switchback right 1.09 Switchback left; no more switchbacks noted since there are so many 1.26 r 31 mountain pink currant Ribes nevadense 30 / 9 10 1.26 Local low point; cross small creek 1.27 l Local high point; sign: "Entering Mount San Jacinto State Park Wilderness" 1.27 r (~fragile sheath sedge, ~Carex fracta; thimbleberry, Rubus parviflorus) 1.30 r 32 western azalea Rhododendron occidentale 30 / 9 7 1.30 l 33 bracken Pteridium aquilinum var. pubescens 50 / 9 17 1.30 r 34 thimbleberry Rubus parviflorus 30 / 9 5 1.32 Cross North Fork of San Jacinto River; elevation 6880 feet (2097 m) 1.32 r 35 Scouler's willow Salix scouleriana 10 / 9 9 1.34 l 36 fragile sheath sedge Carex fracta 50 / 9 12 1.34 l 37 scarlet monkeyflower Mimulus cardinalis 10 / 2 19 1.34 l (ranger's buttons, Sphenosciadium capitellatum) 1.34 Cross North Fork again 1.34 l ? (arrowhead butterweed, Senecio triangularis; lemon lily, Lilium parryi; western columbine, Aquilegia formosa; small cespitose grass, ?; broad-leaved lotus, Lotus crassifolius var. crassifolius; ~tall mannagrass, ~Glyceria elata; Parish's lupine, Lupinus latifolius var. parishii; unk species with old 2 foot dense infl; glaucus willowherb, Epilobium glaberrimum ssp. glaberrimum) 1.36 r (naked buckwheat, Eriogonum nudum var. pauciflorum) 1.36 l (incense-cedar, Calocedrus decurrens) 1.41 l 38 incense-cedar Calocedrus decurrens 20 / 5 19 1.42 r 39 ssp sticky cinquefoil Potentilla glandulosa 20 / 7 1.42 b 40 ssp blue wildrye Elymus glaucus 20 / 7 8 1.42 b 41 goldenrod Solidago californica 20 / 9 45 1.47 l 42 sp groundsmoke Gayophytum sp. 20 / 2 1.47 l 43 Sierra gooseberry Ribes roezlii var. roezlii 30 / 9 14 1.47 r (Grinnell's beardtongue, Penstemon grinnellii var. grinnellii) 1.50 r 44 plain mariposa lily Calochortus invenustus 5 / 3 13 1.51 r 45 Grinnell's beardtongue Penstemon grinnellii var. grinnellii 30 / 4 21 1.54 l 46 naked buckwheat Eriogonum nudum var. pauciflorum 40 / 9 8 1.71 Trail turns right at saddle 1.80 r 47 little prince's pine Chimaphila menziesii 3 / 1 6 1.86 r 48 pine lousewort Pedicularis semibarbata 30 / 9 14 1.94 49 changeable phacelia Phacelia mutabilis 20 / 9 9 2.06 l 50 green-leaf manzanita Arctostaphylos patula+ 30 / 9 18 2.13 b 51 ~ slender wheatgrass Elymus trachycaulus 10 / 3 6 2.23 l (bush chinquapin, Chrysolepis sempervirens) 2.26 r 52 sp Idaho bentgrass Agrostis idahoensis+ 10 / 3 8 2.26 r (Fendler's meadow-rue, ) Thalictrum fendleri var. fendleri / 2.26 r 53 white catch-fly Silene verecunda ssp. platyota 10 / 3 15 2.27 l 54 Parish's lupine Lupinus latifolius var. parishii 10 / 2 8 2.27 r (musk monkeyflower, Mimulus moschatus) 2.28 r 55 Fendler's meadow-rue Thalictrum fendleri var. fendleri 5 / 2 8 2.37 b 56 beautiful hulsea Hulsea vestita ssp. callicarpha 5 / 2 9 2.39 r (blue elderberry, Sambucus mexicana) 2.46 b 57 bush chinquapin Chrysolepis sempervirens 30 / 9 13 2.53 l (wax currant, Ribes cereum var. cereum) 2.56 l 58 western wallflower Erysimum capitatum ssp. capitatum 20 / 3 24 2.57 r 59 ~ forest goosefoot Chenopodium atrovirens / 2.61 r 60 ranger's buttons Sphenosciadium capitellatum 20 / 5 8 2.61 Cross North Fork of San Jacinto River; elevation ~8030 feet (2448 m) 2.61 r 61 arrowhead butterweed Senecio triangularis 30 / 5 1 2.61 r 62 western columbine Aquilegia formosa 5 / 2 9 2.61 b 63 larger mountain monkeyflower Mimulus tilingii 20 / 1 10 2.61 l 64 ssp willowherb Epilobium ciliatum 2 / 1 2.61 r 65 glaucus willowherb Epilobium glaberrimum ssp. glaberrimum 2 / 1 6 2.61 l 66 ~ streambank lotus Lotus oblongifolius var. oblongifolius 10 / 1 6 2.61 l 67 ssp spreading brown-headed rush Juncus phaeocephalus var. paniculatus 10 / 1 4 2.81 l 68 Parish's snowberry Symphoricarpos rotundifolius var. parishii 30 / 9 13 2.81 l 69 California brome Bromus carinatus var. carinatus 20 / 9 29 2.82 l 70 wax currant Ribes cereum var. cereum 2 / 2 16 2.85 r (California corn lily, Veratrum californicum var. californicum) 2.92 Cross side branch of moist drainage 2.98 l 71 San Jacinto lupine Lupinus hyacinthinus 20 / 5 8 2.98 r ~ (subarctic lady-fern, Athyrium filix-femina var. cyclosorum) 3.02 b 72 Martin's paintbrush Castilleja applegatei ssp. martinii 2 / 1 19 3.03 r 73 California corn lily Veratrum californicum var. californicum 5 / 3 6 3.03 Cross main branch of moist drainage 3.04 l (lodgepole pine, Pinus contorta ssp. murrayana) 3.05 Cross dry third branch of moist drainage 3.06 r 74 sp clover Trifolium sp. 3 / 1 3.06 r (scented shooting star, Dodecatheon redolens) 3.09 r 75 lodgepole pine Pinus contorta ssp. murrayana 20 / 9 10 3.10 l (Large field of ranger's buttons, Sphenosciadium capitellatum) 3.24 r 76 swamp sedge Carex senta 2 / 1 9 3.24 r (closest subarctic lady-fern, Athyrium filix-femina var. cyclosorum) 3.24 l 77 ~ brittle bladder fern Cystopteris fragilis 2 / 1 5 3.24 Cross North Fork for last time; elevation 8480 feet (2585 m) 3.24 r 78 ~ tall mannagrass Glyceria elata 10 / 1 2 3.36 T-Jct. with PCT; highest point on loop; elevation 8640 feet (2633 m); go right; sign "(up): Little Round Valley 2.5; San Jacinto Peak 3.2; ((down): Strawberry Trail 2.5; Suicide Rock Trail 3.8; Banning Highway 6.3; (back): 7 Pines Trail" 3.37 r Jct. Marion Mountain Trail; go right on it 3.63 l (bitter cherry, Prunus emarginata) 3.69 b 79 broad-leaved lotus Lotus crassifolius var. crassifolius 20 / 3 10 3.69 r (western polypody, Polypodium hesperium) 3.69 b 80 bitter cherry Prunus emarginata 20 / 3 10 3.73 r 81 Cleveland's horkelia Horkelia clevelandii 5 / 1 8 4.00 r 82 Watson's spike-moss Selaginella watsonii 10 / 2 6 4.00 r 83 giant red paintbrush Castilleja miniata ssp. miniata 1 / 1 10 4.19 l (white-veined wintergreen, Pyrola picta) 4.34 l Big patch of thimbleberry, Rubus parviflorus 4.36 l 84 blue elderberry Sambucus mexicana 1 / 1 54 4.49 Check for Phoradendron on Jeffrey pine or white fir 4.70 l Sign: Wilderness Boundary 85 ~ bristly bird's beak Cordylanthus rigidus ssp. setigerus 30 / 5 35 5.14 l 86 ~ slender wreathplant Stephanomeria exigua ssp. deanei 1 / 1 17 5.68 l 87 slender everlasting Gnaphalium canescens ssp. thermale 10 / 2 8 5.74 r Jct. Campground Trail; stay left; Sign: (left) to Stone Creek Campground 2 mi; (xx?) 1 mi" 5.84 l Check for Gilia 6.11 Trailhead parking for Marion Mountain Trail; elevation 6320 feet (1926 m)
Comments On Specific Species .
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Copyright © 2007 by Tom Chester, Dave Stith and Aaron Fellows.
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Comments and feedback: Tom Chester
Updated 25 July 2007.