Plant Guide to Devils Slide Trail, San Jacinto Mountains

MileS#Common NameScientific Name#Pls
0.00Beginning of trail in southeast corner of parking lot, to right of sign with introductory information; 6480 feet (1975 m) elevation.
0.00l1mountain whitethornCeanothus cordulatus99 / 9
0.00l2incense-cedarCalocedrus decurrens30 / 7
0.00Trail turns left 90°
0.01r3California black oakQuercus kelloggii30 / 7
0.01l4canyon live oakQuercus chrysolepis99 / 9
0.01b5ponderosa pinePinus ponderosa var. pacifica+50 / 5
0.01r6white firAbies concolor99 / 9
0.01l7sugar pinePinus lambertiana99 / 9
0.01rSign: San Jacinto Wilderness, San Bernardino National Forest
0.01lSign: "Be prepared for hazardous conditions beyond this point. Permit required beyond this point. Bikes are not permitted within the San Jacinto Wilderness or on the PCT"
0.03l8fir mistletoePhoradendron bolleanum99 / 9
0.04(incense-cedar mistletoe, Phoradendron juniperinum)
0.04b9Sierra Nevada lotusAcmispon nevadensis var. nevadensis40 / 2
0.04l10former first location of chaparral lotus, last seen here in [2005?]Acmispon grandiflorus var. grandiflorus20 / 2
0.04l11Indian milkweedAsclepias eriocarpa20 / 2
0.08rHuge boulder ~20 feet tall next to a huge dead white fir, showing how its trunk is made of wood spiraled around.
0.13r12Coulter pinePinus coulteri5 / 2
0.13l(pink-bracted manzanita, Arctostaphylos pringlei ssp. drupacea)
0.13Switchback right, #1.
0.15lfirst location of chaparral lotus, Acmispon grandiflorus var. grandiflorus, in 2011
0.15l13Davidson's buckwheat (waif)Eriogonum davidsonii+2 / 2
0.16l14snow-plantSarcodes sanguinea12 / 3
0.16l15splendid giliaSaltugilia splendens ssp. splendens25 / 4
0.17b16California-asterCorethrogyne filaginifolia+50 / 4
0.18l(narrowleaf bedstraw, Galium angustifolium ssp. angustifolium)
0.18l(Grinnell's beardtongue, Penstemon grinnellii var. grinnellii, gone in 2020)
0.18r17leafless wintergreen (appears only infrequently)Pyrola aphylla2 / 2
0.19r(oak mistletoe, Phoradendron serotinum ssp. tomentosum)
0.22l(forest sedge, Carex multicaulis)
0.23Switchback left, #2. Old trail continued down straight ahead.
0.24l18white-veined wintergreenPyrola picta5 / 2
0.24l19spotted coralrootCorallorhiza maculata10 / 4
0.25r20naked buckwheatEriogonum nudum var. pauciflorum30 / 3
0.25r21forest sedgeCarex multicaulis10 / 3
0.25r22prickly cryptantha (waif)Cryptantha muricata+4 / 2
0.31l23southern honeysuckleLonicera subspicata var. denudata5 / 5
0.33r24interior live oak (at northwest side of 10' boulder)Quercus wislizeni var. frutescens+4 / 1
0.36l25pinedropsPterospora andromedea17 / 6
0.37r26mountain grape-soda lupineLupinus excubitus var. austromontanus8 / 1
0.37r(beautiful hulsea, Hulsea vestita ssp. callicarpha)
0.37r27San Jacinto buckwheatEriogonum apiculatum+50 / 1
0.38r28golden yarrowEriophyllum confertiflorum var. confertiflorum10 / 1
0.38r29silky lotus (gone in 2020)Acmispon heermannii var. heermannii5 / 1
0.38r(California elegant rock-cress, Boechera californica)
0.39r30twiggy wreath plant (waifs)Stephanomeria virgata+2 / 2
0.40r(short-flowered monardella, Monardella nana, here and at mile 0.49)
0.46rpine died in August, 2006.
0.46r(beaked penstemon, Penstemon rostriflorus)
0.46r(California-fuchsia, Epilobium canum ssp. latifolium)
0.49l31pink-bracted manzanitaArctostaphylos pringlei ssp. drupacea30 / 5
0.49r32*downy bromeBromus tectorum+3 / 1
0.54l(San Bernardino rubber rabbitbrush, Ericameria nauseosa ssp. bernardina)
0.57l33Grinnell's beardtonguePenstemon grinnellii var. grinnellii99 / 6
0.60l34beaked penstemonPenstemon rostriflorus50 / 9
0.66b(Laguna Mtns. jewel-flower, Streptanthus bernardinus)
0.68Switchback right, #3; elevation 6900 feet (2100 m). Old trail continued up straight ahead.
0.69l35Laguna Mtns. jewel-flowerStreptanthus bernardinus10 / 2
0.76Switchback left, #4. A "mirror-image" switchback of the old trail is immediately next to this switchback.
0.79l36bush chinquapinChrysolepis sempervirens10 / 5
0.81r37pine lousewort (in area shielded by sugar pine roots of big tree with two small trees)Pedicularis semibarbata2 / 1
0.88r38Yosemite rockcressBoechera repanda10 / 1
0.89l(little prince's pine, Chimaphila menziesii, not seen here since 2005)
0.89The following three Mimulus species are only at this location in wet years (they are present in subsequent locations most years):
0.89b39Brewer's monkeyflowerMimulus breweri99 / 3
0.89b40floriferous monkeyflowerMimulus floribundus99 / 3
0.89b41false monkeyflowerMimulus pilosus20 / 2
0.89r(pinegrove groundsmoke, Gayophytum oligospermum)
0.89b42mountain California-fuchsiaEpilobium canum ssp. latifolium30 / 4
0.93r43shy monkeyflowerMimulus nasutus50 / 2
0.93l44groundsmokeGayophytum diffusum ssp. parviflorum10 / 1
0.94r45sticky cinquefoilDrymocallis glandulosa var. viscida50 / 3
0.94r46Idaho bentgrassAgrostis idahoensis50 / 3
0.94b47streambank lotusHosackia oblongifolia var. oblongifolia50 / 2
0.94r48fragile sheath sedgeCarex fracta30 / 9
0.94b(Fendler's blue grass, Poa fendleriana ssp. longiligula)
0.94l(deergrass, Muhlenbergia rigens, in drainage far below trail)
0.94r49bearded flatsedgeCyperus squarrosus4 / 1
0.94r50Suksdorf's monkeyflowerMimulus suksdorfii50 / 1
0.94r51Tiehm's rushJuncus tiehmii50 / 1
0.94r52long-styled rushJuncus longistylis15 / 3
0.95r53glaucus willowherbEpilobium glaberrimum ssp. glaberrimum30 / 2
0.95r54pinegrove groundsmokeGayophytum oligospermum30 / 3
0.95b55western azaleaRhododendron occidentale50 / 4
0.95b56Scouler's willowSalix scouleriana+20 / 5
0.95r57western marsh cudweed (waif)Gnaphalium palustre+1 / 1
0.95r58white catch-flySilene verecunda10 / 2
0.95r59mountain pink currantRibes nevadense30 / 4
0.95r60Parish's lupineLupinus latifolius var. parishii1 / 1
0.95r61willowherbEpilobium ciliatum ssp. ciliatum4 / 2
0.95r(hairy wood rush, Luzula comosa)
0.95Cross first small wet drainage (only one from Jolley Spring); elevation 7120 feet (2170 m)
0.95r62slender hairgrassDeschampsia elongata3 / 2
0.96r63broad-leaved lotusHosackia crassifolia var. crassifolia15 / 2
0.96r64California bee plantScrophularia californica10 / 2
0.97l65Parish's snowberrySymphoricarpos rotundifolius var. parishii30 / 5
0.97r(Fremont silk tassel, Garrya fremontii)
1.05rTree struck by lightning, which exited along its exposed root
1.08l(green-leaf manzanita, Arctostaphylos patula, in front of pink-bracted manzanita, Arctostaphylos pringlei ssp. drupacea, on ridgeline)
1.10l66hybrid manzanitaArctostaphylos patula X A. pringlei ssp. drupacea+2 / 2
1.12l67Jeffrey pinePinus jeffreyi+99 / 9
1.14r(clustered broomrape, Orobanche fasciculata)
1.14r68Fendler's blue grassPoa fendleriana ssp. longiligula10 / 1
1.19lDead tree with rocks 10 feet off ground  at top. How did the rocks get there? Try to explain it, then check our answer.
1.19l(Sierra gooseberry, Ribes roezlii var. roezlii, just below trail.)
1.20r69Parish's bedstrawGalium parishii20 / 4
1.24l(western wallflower, Erysimum capitatum var. capitatum)
1.24l70goldenrodSolidago velutina ssp. californica20 / 1
1.24l(thimbleberry, Rubus parviflorus)
1.24first location of Parish's snowberry, Symphoricarpos rotundifolius var. parishii, in 2011
1.25Note impressive rocks on other side of drainage.
1.25b71scarlet monkeyflowerMimulus cardinalis30 / 2
1.25r72Cleveland's horkeliaHorkelia clevelandii var. clevelandii+20 / 3
1.25r(arroyo willow, Salix lasiolepis)
1.25Cross small moist drainage #2 (first of four crossings of Powderbox Spring drainage); elevation 7320 feet (2230 m)
1.25b73western columbineAquilegia formosa50 / 3
1.25l74giant red paintbrush (died here in 2007)Castilleja miniata ssp. miniata10 / 3
1.25r75Fremont's goosefootChenopodium fremontii20 / 2
1.25best location for broad-leaved lotus, Hosackia crassifolia var. crassifolia
1.25r76granite prickly phloxLinanthus pungens38 / 4
1.25r77San Bernardino rubber rabbitbrushEricameria nauseosa var. bernardina+10 / 7
1.25r78Fremont silk tasselGarrya fremontii30 / 4
1.25l79narrowleaf bedstrawGalium angustifolium ssp. angustifolium5 / 3
1.26r80Martin's paintbrushCastilleja applegatei ssp. martinii6 / 3
1.26l81California coffeeberryFrangula californica+30 / 5
1.31l82*prickly lettuce (waif)Lactuca serriola+1 / 1
1.32r(bracken, Pteridium aquilinum var. pubescens)
1.35b83forest goosefootChenopodium atrovirens20 / 5
1.36l84branching phaceliaPhacelia ramosissima10 / 3
1.37r(blue elderberry, Sambucus nigra ssp. caerulea)
1.37l(only seen in 2012: tinker's penny, Hypericum anagalloides; baby clover, Trifolium sp.; June grass, Koeleria macrantha)
1.37Cross small wet drainage #3 (first of two of drainage containing Middle Spring; second is above Middle Spring); elevation 7380 feet (2250 m)
1.37r85baby brittle bladder fern (not seen since 2007)Cystopteris fragilis4 / 3
1.37r86green miner's lettuceClaytonia parviflora ssp. viridis12 / 1
1.37rVery small Mimulus nasutus and M. floribundus, just 2-4 cm (1-2 inch) tall
1.38r87Sierra gooseberryRibes roezlii var. roezlii15 / 4
1.41l88little prince's pineChimaphila menziesii6 / 4
1.42Seep in wet years
1.42r89thimbleberry (small plant never seen to bloom at this location)Rubus parviflorus30 / 3
1.42l90brackenPteridium aquilinum var. pubescens20 / 3
1.46lSecond location of hybrid manzanita, Arctostaphylos patula X A. pringlei ssp. drupacea
1.46Trail turns 90 degrees right.
1.48Cross bouldery drainage
1.50Switchback right, #5; elevation 7500 feet (2290 m).
1.54Cross same bouldery drainage again at higher elevation.
1.57r(white fir, Abies concolor, tree that fell over when it had a good-sized trunk, grew a new erect trunk which was lost, and now has two side branches competing to be the new main trunk)
1.59rView of Tahquitz Peak Lookout
1.60rView of Lily Rock, Palomar Mountain Range, San Diego County coastline, Santa Margarita Mountains and closer ranges.
1.66r(California chicory, Rafinesquia californica, seen only in 2010)
1.69Cross wet drainage #4, a large one ~80 feet above Middle Spring, second of the two crossings of this drainage; elevation 7600 feet (2315 m)
1.69r91blue elderberrySambucus nigra ssp. caerulea20 / 4
1.70Cross separate branch of same drainage
1.70l92red-stemmed spring beautyClaytonia rubra20 / 2
1.70lfirst mature brittle bladder fern, Cystopteris fragilis
1.76Trail turns left 50 degrees; tall rock walls on right.
1.80l(California cliff-brake, Pellaea mucronata var. californica)
1.80l93green-leaf manzanitaArctostaphylos patula50 / 9
1.81l94coyote tobacco (waif)Nicotiana attenuata+3 / 1
1.85Enter Powderbox Spring drainage with lots of western azalea, the best display of it on the trail.
1.85first live giant red paintbrush, Castilleja miniata ssp. miniata, in 2011
1.85l95Nevada cinquefoilDrymocallis lactea var. lactea30 / 2
1.85b96western wallflowerErysimum capitatum var. capitatum30 / 2
1.85Cross wet drainage #5, second of the four crossings of Powderbox Spring drainage; elevation 7680 feet (2340 m)
1.85First good stand of thimbleberry, Rubus parviflorus
1.85r(San Jacinto Mts. Keckiella, Keckiella rothrockii var. jacintensis)
1.86b97wax currantRibes cereum var. cereum50 / 4
1.91Switchback left, #6. (A blocked-off old trail continues down straight ahead.)
1.99Switchback right, #7, near drainage from Powderbox Spring again.
2.02Switchback left, #8, with a massive rock fortress above the switchback.
2.02r(Just off-trail beyond the switchback, in the boulders at head level and above, is San Jacinto prickly phlox, Linanthus jaegeri; and western polypody, Polypodium hesperium. ~25 feet farther to south is little-leaf mock orange, Philadelphus microphyllus, at trail level.)
2.02l98*bull thistle (waif)Cirsium vulgare+1 / 1
2.02r99Parish's campionSilene parishii10 / 2
2.04lSign: "Soil in the area is fragile. Please stay on the trail."
2.07r100musk monkeyflowerMimulus moschatus99 / 2
2.07r101San Jacinto Mts. keckiellaKeckiella rothrockii var. jacintensis10 / 3
2.07r102hairy wood rushLuzula comosa99 / 2
2.07Cross wet drainage #6, a small one immediately above Powderbox Spring; third of the four crossings of this drainage; elevation 7840 feet (2390 m); curve left
2.07r103vari-nerved sedgeCarex heteroneura5 / 1
2.07r(California geranium, Geranium californicum)
2.07r104changeable phaceliaPhacelia mutabilis+10 / 2
2.07r105mountain rock-cressBoechera retrofracta X+10 / 2
2.07bBest spot for Cleveland's horkelia, Horkelia clevelandii var. clevelandii
2.07r106blue-eyed grassSisyrinchium bellum+1 / 1
2.07r107larger mountain monkeyflowerMimulus tilingii30 / 1
2.07b108rigid hedge-nettleStachys rigida8 / 1
2.08r109Jepson's blue wildryeElymus glaucus ssp. glaucus5 / 2
2.08lView of Diamond Valley Reservoir, shaped like an hourglass.
2.08r110California groundconeKopsiopsis strobilacea30 / 2
2.13Trails turns 90 degrees right at ridge
2.14r(Many California groundcone, Kopsiopsis strobilacea)
2.20Switchback right, #9.
2.25l111southern mountain-monardellaMonardella australis ssp. australis5 / 2
2.25rTrail gradually bends left. Note the window formed by the boulders on right
2.27l112prickly hawkweedHieracium horridum10 / 1
2.27lBest location for mountain rock-cress, Boechera retrofracta X
2.27l(western polypody, Polypodium hesperium, just above head level hidden behind boulder between white fir and canyon live oak)
2.27l113Watson's spike-mossSelaginella watsonii5 / 1
2.27l114southern Sierra phaceliaPhacelia austromontana40 / 1
2.27l115small fescue (waif)Festuca microstachys1 / 1
2.27l116squirreltailElymus elymoides2 / 1
2.28l117rock buckwheatEriogonum saxatile5 / 1
2.35r(field of swamp sedge, Carex senta. Parish's yampah, Perideridia parishii, 30 feet below trail)
2.35Enter seep area
2.35l118long-anthered rushJuncus macrandrus80 / 1
2.35l119pearlwortSagina saginoides20 / 1
2.35l120Kentucky blue grassPoa pratensis ssp. agassizensis10 / 1
2.35b121California geraniumGeranium californicum5 / 1
2.35l122plain mariposa lilyCalochortus invenustus1 / 1
2.35l123lemon lilyLilium parryi+1 / 1
2.35l124glandular willowherbEpilobium ciliatum ssp. glandulosum2 / 1
2.35l125primrose monkeyflowerMimulus primuloides var. primuloides10 / 1
2.35lBest location for streambank lotus, Hosackia oblongifolia var. oblongifolia, in normal years
2.35l126abrupt-beak sedgeCarex abrupta10 / 1
2.35l127tinker's pennyHypericum anagalloides50 / 1
2.35Cross shallow drainage at head of Powderbox Spring drainage; last of the four crossings of this drainage; elevation 8010 feet (2440 m)
2.37Switchback left, #10. (on right: jct. with a blocked-off old trail; a path straight ahead leads to the hanging "picture window" rock seen from here; and six plants of San Jacinto prickly phlox, Leptodactylon jaegeri).
2.44r128San Gabriel beardtonguePenstemon labrosus10 / 1
2.44r(Elmer's needlegrass, Stipa occidentalis var. pubescens)
2.45r129pussy pawsCalyptridium monospermum20 / 1
2.52End Devils Slide Trail at Saddle Junction, 8075 feet (2460 m) elevation, a jct. with 4 other trails.
SPECIES ONLY FOUND OFF-TRAIL, not numbered in the guide above.
0.04130incense-cedar mistletoePhoradendron juniperinum1 / 1
0.19131oak mistletoePhoradendron serotinum ssp. tomentosum1 / 1
0.37132beautiful hulseaHulsea vestita ssp. callicarpha10 / 1
0.38133California elegant rock-cressBoechera californica1 / 1
0.40134short-flowered monardellaMonardella nana2 / 2
0.94135deergrassMuhlenbergia rigens5 / 1
1.14136clustered broomrapeOrobanche fasciculata6 / 1
1.25137arroyo willowSalix lasiolepis1 / 1
1.37138June grassKoeleria macrantha2 / 1
1.66139California chicory (waif)Rafinesquia californica1 / 1
1.80140California cliff-brakePellaea mucronata var. californica2 / 1
2.02141San Jacinto prickly phloxLinanthus jaegeri8 / 2
2.02142little-leaf mock orangePhiladelphus microphyllus1 / 1
2.02143western polypodyPolypodium hesperium2 / 1
2.35144swamp sedgeCarex senta50 / 1
2.35145Parish's yampahPerideridia parishii10 / 1
2.44146Elmer's needlegrassStipa occidentalis var. pubescens1 / 1
Updated 16 September 2020.