Plant Guide to Marion Mountain Trail Area, San Jacinto Mountains

Plant Guide to Marion Mountain Trail Area, San Jacinto Mountains

The plant guide uses the 2012 second edition Jepson Manual names.
See Explanation of Plant Trail Guides for an explanation of the column headers. In this guide, all species are numbered, even though some of them might be some 50 feet or so from the trail, since all can be easily reached from the trail. The abundance estimates for each species include all plants that can be easily seen from the trail, as well as the campground road.
Also see Checklist in Family Order with links to the Jepson Manual eFlora and Calphotos.
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)

Mile S # id? Common Name Scientific Name #Pls
The first two species are found only in the vicinity of the parking area
- 1 spike bentgrass Agrostis exarata 10 / 1
- 2 Sonoran rush Juncus effusus ssp. austrocalifornicus 30 / 1
The next two species are only found in the vicinity of the campground
- 3 chickweed oxytheca Sidotheca caryophylloides 30 / 1
- 4 Davidson's buckwheat Eriogonum davidsonii 70 / 1
The next species is vouchered from the trail, but has not yet been seen
? 5 vari-nerved sedge Carex heteroneura V /
0.00 Trailhead
0.00 6 Sierra Nevada lotus Acmispon nevadensis var. nevadensis 50 / 5
0.00 r 7 pink-bracted manzanita Arctostaphylos pringlei ssp. drupacea 57 / 2
0.00 l 8 sugar pine Pinus lambertiana 99 / 9
0.00 l 9 incense-cedar Calocedrus decurrens 99 / 9
0.00 b 10 ponderosa pine Pinus ponderosa var. pacifica 99 / 7
0.00 b 11 canyon live oak Quercus chrysolepis 99 / 9
0.00 b 12 oak mistletoe Phoradendron serotinum ssp. tomentosum 80 / 5
0.00 l Jct. shortcut trail
0.03 l 13 Coulter pine Pinus coulteri 3 / 1
0.03 l 14 pinedrops Pterospora andromedea 10 / 3
0.07 b 15 Nevin's bird's beak Cordylanthus nevinii 99 / 7
0.07 r 16 broad-leaved lotus Hosackia crassifolia var. crassifolia 30 / 5
0.07 b 17 white fir Abies concolor 99 / 9
0.07 r 18 goldenrod Solidago velutina ssp. californica 50 / 5
0.07 Switchback left
0.07 19 groundsmoke Gayophytum diffusum ssp. parviflorum 99 / 9
0.07 20 *rattail fescue Festuca myuros 10 / 1
0.07 r 21 forest sedge Carex multicaulis 6 / 3
0.07 22 mountain red-root cryptantha Cryptantha micrantha var. lepida 20 / 1
0.07 23 splendid gilia Saltugilia splendens ssp. splendens 20 / 2
0.07 24 whisker-brush Leptosiphon ciliatus 50 / 1
0.13 r 25 San Jacinto Mtns. bedstraw Galium angustifolium ssp. jacinticum 99 / 5
0.14 r 26 beaked penstemon Penstemon rostriflorus 99 / 9
0.14 27 western wallflower Erysimum capitatum var. capitatum 99 / 9
0.17 Switchback right
0.19 b 28 incense-cedar mistletoe Phoradendron juniperinum 91 / 4
0.24 l 29 fir mistletoe Phoradendron bolleanum 15 / 3
0.24 Switchback left
0.24 r 30 mountain California-fuchsia Epilobium canum ssp. latifolium 99 / 9
0.28 Trail curves right
0.34 r 31 wax currant Ribes cereum var. cereum 50 / 3
0.35 Cross dirt road
0.35 r 32 false monkeyflower Mimulus pilosus 99 / 7
0.35 r 33 Jones' prickly-nut cryptantha Cryptantha muricata var. jonesii 1 / 1
0.40 l 34 mountain whitethorn Ceanothus cordulatus 99 / 9
0.40 l Jct. use trail from Campground
0.42 l 35 California black oak Quercus kelloggii 35 / 9
0.46 r Jct. Stone Creek Trail
0.46 l 36 deergrass Muhlenbergia rigens 30 / 1
0.48 b 37 Scouler's willow Salix scouleriana 81 / 5
0.48 r 38 western azalea Rhododendron occidentale 99 / 5
0.48 39 floriferous monkeyflower Mimulus floribundus 99 / 4
0.51 r 40 fragile sheath sedge Carex fracta 99 / 9
0.53 r 41 sticky cinquefoil Drymocallis glandulosa var. viscida 99 / 5
0.53 42 sulphur buckwheat Eriogonum umbellatum var. munzii 10 / 3
0.53 43 slender everlasting Pseudognaphalium thermale 6 / 4
0.53 l 44 white-veined wintergreen Pyrola picta 10 / 5
0.53 45 pine cryptantha Cryptantha simulans 10 / 1
0.54 46 snow-plant Sarcodes sanguinea 20 / 3
0.56 r 47 San Bernardino rubber rabbitbrush Ericameria nauseosa var. bernardina 15 / 5
0.59 48 *sow thistle Sonchus oleraceus 1 / 1
0.60 b 49 short-flowered monardella Monardella nana 99 / 9
0.62 r 50 Grinnell's beardtongue Penstemon grinnellii var. grinnellii 99 / 5
0.62 r 51 white catch-fly Silene verecunda 50 / 5
0.62 52 pine lousewort Pedicularis semibarbata 50 / 5
0.64 r 53 naked buckwheat Eriogonum nudum var. pauciflorum 85 / 5
0.69 54 twiggy wreath plant Stephanomeria virgata 1 / 1
0.70 r 55 Martin's paintbrush Castilleja applegatei ssp. martinii 10 / 5
0.77 r 56 *downy brome Bromus tectorum 3 / 1
0.78 r 57 mountain pink currant Ribes nevadense 99 / 7
0.82 l 58 thimbleberry Rubus parviflorus 50 / 4
0.82 l 59 scarlet monkeyflower Mimulus cardinalis 17 / 2
0.83 60 little prince's pine Chimaphila menziesii 30 / 5
0.83 r 61 western columbine Aquilegia formosa 20 / 5
0.83 b 62 bracken Pteridium aquilinum var. pubescens 99 / 5
0.90 63 forest mariposa lily Calochortus invenustus 50 / 5
0.90 r 64 Parish's lupine Lupinus latifolius var. parishii 50 / 4
0.90 r 65 fringed brome Bromus richardsonii 10 / 2
0.90 l 66 changeable phacelia Phacelia mutabilis 99 / 4
0.90 67 spotted coralroot Corallorhiza maculata 20 / 4
0.90 l 68 forest goosefoot Chenopodium atrovirens 50 / 4
0.90 69 lemon lily Lilium parryi 11 / 1
0.91 l 70 California wild rose Rosa californica 4 / 1
0.93 71 purple false-gilia Allophyllum divaricatum 50 / 3
0.96 b 72 white hawkweed Hieracium albiflorum 30 / 2
0.96 73 glaucus willowherb Epilobium glaberrimum ssp. glaberrimum 10 / 2
0.98 b 74 giant red paintbrush Castilleja miniata ssp. miniata 30 / 4
1.01 r 75 long-styled rush Juncus longistylis 99 / 1
1.02 b 76 blue elderberry Sambucus nigra ssp. caerulea 5 / 3
1.03 77 Jeffrey pine Pinus jeffreyi 99 / 7
1.07 l Jct. use trail to rock slab overlook
1.12 Cross first major drainage
1.12 78 larger mountain monkeyflower Mimulus tilingii 15 / 3
1.12 79 Brewer's monkeyflower Mimulus breweri 99 / 3
1.12 80 scattered blazing star Mentzelia dispersa 99 / 5
1.12 81 common monkeyflower Mimulus guttatus 1 / 1
1.16 82 Wright's buckwheat Eriogonum wrightii var. membranaceum 10 / 2
1.17 Switchback right
1.18 l 83 squirreltail Elymus elymoides 3 / 1
1.18 Switchback left; the many subsequent switchbacks are not recorded
1.29 r 84 bush chinquapin Chrysolepis sempervirens 99 / 5
1.34 r Sign: Mt. San Jacinto State Park Wilderness
1.59 b Best spot for Parish's lupine, Lupinus latifolius var. parishii
1.61 l 85 granite prickly phlox Linanthus pungens 8 / 1
1.63 r 86 pipsissewa Chimaphila umbellata 99 / 1
1.63 r 87 Parish's campion Silene parishii 2 / 2
1.65 l 88 mat muhly Muhlenbergia richardsonis 20 / 2
1.69 89 San Jacinto lupine Lupinus hyacinthinus 99 / 2
1.69 b 90 bitter cherry Prunus emarginata 50 / 3
1.72 91 green-leaf manzanita Arctostaphylos patula 70 / 4
1.74 r 92 pinegrove groundsmoke Gayophytum oligospermum 1 / 1
1.81 Trail now parallels second major drainage
1.81 93 Idaho bentgrass Agrostis idahoensis 20 / 1
1.81 94 ranger's buttons Sphenosciadium capitellatum 4 / 1
1.81 l 95 Fendler's meadow-rue Thalictrum fendleri var. fendleri 30 / 5
1.81 l 96 Cleveland's horkelia Horkelia clevelandii var. clevelandii 50 / 3
1.81 97 abrupt-beak sedge Carex abrupta 1 / 1
1.81 l 98 slender hairgrass Deschampsia elongata 10 / 2
1.81 99 pearlwort Sagina saginoides 1 / 1
1.81 100 Duran's rush Juncus duranii 15 / 1
1.81 101 Ross' sedge Carex rossii 1 / 1
1.81 102 Nevada cinquefoil Drymocallis lactea var. lactea 10 / 2
1.81 103 green miner's lettuce Claytonia parviflora ssp. viridis 10 / 1
1.81 104 brittle bladder fern Cystopteris fragilis 20 / 1
1.81 105 musk monkeyflower Mimulus moschatus 30 / 2
1.81 106 southern Sierra phacelia Phacelia austromontana 50 / 3
1.81 107 Suksdorf's monkeyflower Mimulus suksdorfii 50 / 1
1.81 108 California everlasting Pseudognaphalium californicum 1 / 1
1.86 l 109 blue wildrye Elymus glaucus ssp. glaucus 30 / 5
2.04 l 110 Sierra gooseberry Ribes roezlii var. roezlii 20 / 2
2.11 l 111 mountain holly fern Polystichum scopulinum 5 / 1
2.11 l 112 prickly hawkweed Hieracium horridum 1 / 1
2.11 113 Hall's brome Bromus hallii 3 / 1
2.12 r 114 mountain spray Holodiscus discolor var. microphyllus 3 / 1
2.19 115 pine violet Viola pinetorum ssp. pinetorum 10 / 1
2.40 r 116 pussy paws Calyptridium monospermum 30 / 1
2.42 r 117 lodgepole pine Pinus contorta ssp. murrayana 1 / 1
2.42 l 118 limber pine Pinus flexilis 1 / 1
2.44 Jct. PCT

Mile	S	#	Common Name	Scientific Name	#Pls
			The first two species are found only in the vicinity of the parking area
-		1	spike bentgrass	Agrostis exarata	10 / 1
-		2	Sonoran rush	Juncus effusus ssp. austrocalifornicus	30 / 1
			The next two species are only found in the vicinity of the campground
-		3	chickweed oxytheca	Sidotheca caryophylloides	30 / 1
-		4	Davidson's buckwheat	Eriogonum davidsonii	70 / 1
			The next species is vouchered from the trail, but has not yet been seen
?		5	vari-nerved sedge	Carex heteroneura	V /
0.00			Trailhead
0.00		6	Sierra Nevada lotus	Acmispon nevadensis var. nevadensis	50 / 5
0.00	r	7	pink-bracted manzanita	Arctostaphylos pringlei ssp. drupacea	57 / 2
0.00	l	8	sugar pine	Pinus lambertiana	99 / 9
0.00	l	9	incense-cedar	Calocedrus decurrens	99 / 9
0.00	b	10	ponderosa pine	Pinus ponderosa var. pacifica	99 / 7
0.00	b	11	canyon live oak	Quercus chrysolepis	99 / 9
0.00	b	12	oak mistletoe	Phoradendron serotinum ssp. tomentosum	80 / 5
0.00	l		Jct. shortcut trail
0.03	l	13	Coulter pine	Pinus coulteri	3 / 1
0.03	l	14	pinedrops	Pterospora andromedea	10 / 3
0.07	b	15	Nevin's bird's beak	Cordylanthus nevinii	99 / 7
0.07	r	16	broad-leaved lotus	Hosackia crassifolia var. crassifolia	30 / 5
0.07	b	17	white fir	Abies concolor	99 / 9
0.07	r	18	goldenrod	Solidago velutina ssp. californica	50 / 5
0.07			Switchback left
0.07		19	groundsmoke	Gayophytum diffusum ssp. parviflorum	99 / 9
0.07		20	*rattail fescue	Festuca myuros	10 / 1
0.07	r	21	forest sedge	Carex multicaulis	6 / 3
0.07		22	mountain red-root cryptantha	Cryptantha micrantha var. lepida	20 / 1
0.07		23	splendid gilia	Saltugilia splendens ssp. splendens	20 / 2
0.07		24	whisker-brush	Leptosiphon ciliatus	50 / 1
0.13	r	25	San Jacinto Mtns. bedstraw	Galium angustifolium ssp. jacinticum	99 / 5
0.14	r	26	beaked penstemon	Penstemon rostriflorus	99 / 9
0.14		27	western wallflower	Erysimum capitatum var. capitatum	99 / 9
0.17			Switchback right
0.19	b	28	incense-cedar mistletoe	Phoradendron juniperinum	91 / 4
0.24	l	29	fir mistletoe	Phoradendron bolleanum	15 / 3
0.24			Switchback left
0.24	r	30	mountain California-fuchsia	Epilobium canum ssp. latifolium	99 / 9
0.28			Trail curves right
0.34	r	31	wax currant	Ribes cereum var. cereum	50 / 3
0.35			Cross dirt road
0.35	r	32	false monkeyflower	Mimulus pilosus	99 / 7
0.35	r	33	Jones' prickly-nut cryptantha	Cryptantha muricata var. jonesii	1 / 1
0.40	l	34	mountain whitethorn	Ceanothus cordulatus	99 / 9
0.40	l		Jct. use trail from Campground
0.42	l	35	California black oak	Quercus kelloggii	35 / 9
0.46	r		Jct. Stone Creek Trail
0.46	l	36	deergrass	Muhlenbergia rigens	30 / 1
0.48	b	37	Scouler's willow	Salix scouleriana	81 / 5
0.48	r	38	western azalea	Rhododendron occidentale	99 / 5
0.48		39	floriferous monkeyflower	Mimulus floribundus	99 / 4
0.51	r	40	fragile sheath sedge	Carex fracta	99 / 9
0.53	r	41	sticky cinquefoil	Drymocallis glandulosa var. viscida	99 / 5
0.53		42	sulphur buckwheat	Eriogonum umbellatum var. munzii	10 / 3
0.53		43	slender everlasting	Pseudognaphalium thermale	6 / 4
0.53	l	44	white-veined wintergreen	Pyrola picta	10 / 5
0.53		45	pine cryptantha	Cryptantha simulans	10 / 1
0.54		46	snow-plant	Sarcodes sanguinea	20 / 3
0.56	r	47	San Bernardino rubber rabbitbrush	Ericameria nauseosa var. bernardina	15 / 5
0.59		48	*sow thistle	Sonchus oleraceus	1 / 1
0.60	b	49	short-flowered monardella	Monardella nana	99 / 9
0.62	r	50	Grinnell's beardtongue	Penstemon grinnellii var. grinnellii	99 / 5
0.62	r	51	white catch-fly	Silene verecunda	50 / 5
0.62		52	pine lousewort	Pedicularis semibarbata	50 / 5
0.64	r	53	naked buckwheat	Eriogonum nudum var. pauciflorum	85 / 5
0.69		54	twiggy wreath plant	Stephanomeria virgata	1 / 1
0.70	r	55	Martin's paintbrush	Castilleja applegatei ssp. martinii	10 / 5
0.77	r	56	*downy brome	Bromus tectorum	3 / 1
0.78	r	57	mountain pink currant	Ribes nevadense	99 / 7
0.82	l	58	thimbleberry	Rubus parviflorus	50 / 4
0.82	l	59	scarlet monkeyflower	Mimulus cardinalis	17 / 2
0.83		60	little prince's pine	Chimaphila menziesii	30 / 5
0.83	r	61	western columbine	Aquilegia formosa	20 / 5
0.83	b	62	bracken	Pteridium aquilinum var. pubescens	99 / 5
0.90		63	forest mariposa lily	Calochortus invenustus	50 / 5
0.90	r	64	Parish's lupine	Lupinus latifolius var. parishii	50 / 4
0.90	r	65	fringed brome	Bromus richardsonii	10 / 2
0.90	l	66	changeable phacelia	Phacelia mutabilis	99 / 4
0.90		67	spotted coralroot	Corallorhiza maculata	20 / 4
0.90	l	68	forest goosefoot	Chenopodium atrovirens	50 / 4
0.90		69	lemon lily	Lilium parryi	11 / 1
0.91	l	70	California wild rose	Rosa californica	4 / 1
0.93		71	purple false-gilia	Allophyllum divaricatum	50 / 3
0.96	b	72	white hawkweed	Hieracium albiflorum	30 / 2
0.96		73	glaucus willowherb	Epilobium glaberrimum ssp. glaberrimum	10 / 2
0.98	b	74	giant red paintbrush	Castilleja miniata ssp. miniata	30 / 4
1.01	r	75	long-styled rush	Juncus longistylis	99 / 1
1.02	b	76	blue elderberry	Sambucus nigra ssp. caerulea	5 / 3
1.03		77	Jeffrey pine	Pinus jeffreyi	99 / 7
1.07	l		Jct. use trail to rock slab overlook
1.12			Cross first major drainage
1.12		78	larger mountain monkeyflower	Mimulus tilingii	15 / 3
1.12		79	Brewer's monkeyflower	Mimulus breweri	99 / 3
1.12		80	scattered blazing star	Mentzelia dispersa	99 / 5
1.12		81	common monkeyflower	Mimulus guttatus	1 / 1
1.16		82	Wright's buckwheat	Eriogonum wrightii var. membranaceum	10 / 2
1.17			Switchback right
1.18	l	83	squirreltail	Elymus elymoides	3 / 1
1.18			Switchback left; the many subsequent switchbacks are not recorded
1.29	r	84	bush chinquapin	Chrysolepis sempervirens	99 / 5
1.34	r		Sign: Mt. San Jacinto State Park Wilderness
1.59	b		Best spot for Parish's lupine, Lupinus latifolius var. parishii
1.61	l	85	granite prickly phlox	Linanthus pungens	8 / 1
1.63	r	86	pipsissewa	Chimaphila umbellata	99 / 1
1.63	r	87	Parish's campion	Silene parishii	2 / 2
1.65	l	88	mat muhly	Muhlenbergia richardsonis	20 / 2
1.69		89	San Jacinto lupine	Lupinus hyacinthinus	99 / 2
1.69	b	90	bitter cherry	Prunus emarginata	50 / 3
1.72		91	green-leaf manzanita	Arctostaphylos patula	70 / 4
1.74	r	92	pinegrove groundsmoke	Gayophytum oligospermum	1 / 1
1.81			Trail now parallels second major drainage
1.81		93	Idaho bentgrass	Agrostis idahoensis	20 / 1
1.81		94	ranger's buttons	Sphenosciadium capitellatum	4 / 1
1.81	l	95	Fendler's meadow-rue	Thalictrum fendleri var. fendleri	30 / 5
1.81	l	96	Cleveland's horkelia	Horkelia clevelandii var. clevelandii	50 / 3
1.81		97	abrupt-beak sedge	Carex abrupta	1 / 1
1.81	l	98	slender hairgrass	Deschampsia elongata	10 / 2
1.81		99	pearlwort	Sagina saginoides	1 / 1
1.81		100	Duran's rush	Juncus duranii	15 / 1
1.81		101	Ross' sedge	Carex rossii	1 / 1
1.81		102	Nevada cinquefoil	Drymocallis lactea var. lactea	10 / 2
1.81		103	green miner's lettuce	Claytonia parviflora ssp. viridis	10 / 1
1.81		104	brittle bladder fern	Cystopteris fragilis	20 / 1
1.81		105	musk monkeyflower	Mimulus moschatus	30 / 2
1.81		106	southern Sierra phacelia	Phacelia austromontana	50 / 3
1.81		107	Suksdorf's monkeyflower	Mimulus suksdorfii	50 / 1
1.81		108	California everlasting	Pseudognaphalium californicum	1 / 1
1.86	l	109	blue wildrye	Elymus glaucus ssp. glaucus	30 / 5
2.04	l	110	Sierra gooseberry	Ribes roezlii var. roezlii	20 / 2
2.11	l	111	mountain holly fern	Polystichum scopulinum	5 / 1
2.11	l	112	prickly hawkweed	Hieracium horridum	1 / 1
2.11		113	Hall's brome	Bromus hallii	3 / 1
2.12	r	114	mountain spray	Holodiscus discolor var. microphyllus	3 / 1
2.19		115	pine violet	Viola pinetorum ssp. pinetorum	10 / 1
2.40	r	116	pussy paws	Calyptridium monospermum	30 / 1
2.42	r	117	lodgepole pine	Pinus contorta ssp. murrayana	1 / 1
2.42	l	118	limber pine	Pinus flexilis	1 / 1
2.44			Jct. PCT

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Copyright © 2010-2018 by Tom Chester, Dave Stith, Mike Crouse, James Dillane, Keir Morse, and Nancy Accola.
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 26 September 2018.