Plant Guide to South Ridge Trail, 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
The Plant Guide
Comments On Specific Species

Introduction

This guide begins at the base of the trail. See the guide beginning at the top of the trail for the detailed information about this guide.

A free wilderness permit is required, which can be obtained from the Forest Service Office in Idyllwild. The trailhead is reached by heading south on SR243 from there and following the signs to South Fork Trail. The route is: left on the northernmost intersection with Saunders Meadow Rd.; left on Pine Ave.; right on Tahquitz View Drive; right on Forest Service dirt road 5S11 to a very small parking area. Note that there is an unsigned fork in the dirt road just before the parking area; go left there.

Some relevant GPS coordinates:

#LatitudeLongitudeElevation
NAD27
133.73747-116.705995783
233.73522-116.694966473
WGS84
133.73749-116.706845783
233.73524-116.695816473

Point #1 is at the intersection of Tahquitz View Drive and F5S11; point #2 is the trailhead. If you don't know the difference between NAD27 and WGS84, use WGS84.

The Plant Guide

Version for printing, without lines and other text on this page: html (7 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)

MileS#id?Common NameLatin Name#here#all
0.00   Begin trail at lower trailhead; elevation ~6540 feet (1995 m)
0.00r  (snow-plant, Sarcodes sanguinea, 40 feet away)
0.00r1 Parish' Jacumba milk-vetchAstragalus douglasii var. parishii30 / 94
0.00r2 purple-root cryptanthaCryptantha micrantha99 / 58
0.00b3 Wright's buckwheatEriogonum wrightii var. membranaceum30 / 91
0.00b4 California-asterLessingia filaginifolia var. filaginifolia20 / 953
0.00r5 Sierra Nevada lotusLotus nevadensis var. nevadensis20 / 96
0.00r6sspCalifornia squirreltailElymus elymoides ssp. californicus20 / 514
0.00b7 pink-bracted manzanitaArctostaphylos pringlei ssp. drupacea99 / 92
0.00r8 confusing fescueVulpia microstachys var. confusa20 / 12
0.00r9 Indian milkweedAsclepias eriocarpa1 / 119
0.00   Trail turns left 90°
0.00r  Sign: "South Ridge Trail ..."
0.00r10 canyon live oakQuercus chrysolepis99 / 922
0.00b11 golden yarrowEriophyllum confertiflorum var. confertiflorum30 / 457
0.00r12 leafy daisyErigeron foliosus var. foliosus1 / 145
0.00r13 strigose lotusLotus strigosus30 / 939
0.00r14 whisker-brushLinanthus ciliatus5 / 15
0.00r15 *downy bromeBromus tectorum50 / 522
0.00b16 Coulter pinePinus coulteri1 / 111
0.00r17 pine dwarf-mistletoeArceuthobium campylopodum1 / 11
0.01b18 slender bedstrawGalium angustifolium ssp. gracillimum10 / 53
0.01b19 California black oakQuercus kelloggii3 / 112
0.01r20 perennial rock-cressArabis perennans+50 / 97
0.01r21 oak mistletoePhoradendron villosum2 / 25
0.01r22 rush blue grassPoa secunda ssp. juncifolia+30 / 51
0.01b23 goldenrodSolidago californica10 / 137
0.01l24 incense-cedarCalocedrus decurrens5 / 113
0.02r25spcatchflySilene sp. similar to S. laciniata1 / 1 
0.02r26 white firAbies concolor30 / 920
0.02r27 hollyleaf redberryRhamnus ilicifolia1 / 144
0.02r28 California fuchsiaEpilobium canum10 / 314
0.02r29spshort-flowered monardellaMonardella nana ssp. tenuiflora10 / 32
0.03   Switchback left at drainage
0.03r30 Cleveland's horkeliaHorkelia clevelandii1 / 14
0.04r31 white-margined oxythecaOxytheca emarginata30 / 31
0.04r  Sign: Be prepared for hazardous conditions; permit required for wilderness area..."
0.04r32 incense-cedar mistletoePhoradendron libocedri1 / 13
0.06l33 interior live oakQuercus wislizeni var. frutescens4 / 28
0.08   Switchback right
0.08l34 chaparral whitethornCeanothus leucodermis4 / 215
0.08r35 Mexican manzanitaArctostaphylos pungens1 / 13
0.08l36 Jeffrey pinePinus jeffreyi99 / 921
0.10   Switchback left
0.10r37 bush monkeyflowerMimulus aurantiacus5 / 143
0.12r38~Parish's chaenactisChaenactis parishii10 / 11
0.12r39 California coffeeberryRhamnus californica+1 / 12
0.12l40 sugar pinePinus lambertiana50 / 912
0.12r41~popcorn flowerCryptantha intermedia10 / 130
0.13   Trail curves right
0.14r42 naked buckwheatEriogonum nudum var. pauciflorum30 / 93
0.14l43 volcanic giliaGilia ochroleuca ssp. exilis5 / 24
0.15   Trail curves right
0.17l  (beautiful hulsea, Hulsea vestita ssp. callicarpha)
0.20r  Several 6 inch wide yellow-brown mushrooms
0.21   Trail curves right
0.21r44~mountain grape-soda lupineLupinus excubitus var. austromontanus2 / 25
0.22r45?Laguna Mtns. jewel-flower? Penstemon?Streptanthus bernardinus? Penstemon rostriflorus?2 / 2 
 r  Boulders showing old soil line by absence of lichens at base
0.25l46 mountain whitethornCeanothus cordulatus50 / 915
0.27l47 little prince's pineChimaphila menziesii10 / 32
0.27l  (snow-plant, Sarcodes sanguinea)
0.28l  Rock window formed by two huge boulders
0.28l48 Wright's buckwheatEriogonum wrightii var. subscaposum50 / 914
0.29l49 Nevin's bird's beakCordylanthus nevinii20 / 28
0.29l50 small fescueVulpia microstachys var. microstachys20 / 21
0.30   Trail jogs right, then left
0.30b51 southern mountain woolly-starEriastrum densifolium ssp. austromontanum30 / 211
0.31r52 San Bernardino rubber rabbitbrushChrysothamnus nauseosus ssp. bernardinus50 / 915
0.31r53 bajada lupineLupinus concinnus10 / 213
0.32l54 Jepson's blue wildryeElymus glaucus ssp. jepsonii10 / 214
0.33   Trail turns left 90° at drainage
0.34r55~beautiful hulseaHulsea vestita ssp. callicarpha20 / 52
0.34r56spann buckwheatEriogonum with kidney-shaped leaf, wider than long /  
0.36   Trail curves right
0.37   Trail turns right 90°
0.37r57~slender wreathplantStephanomeria exigua /  
0.38r  San Jacinto buckwheatEriogonum apiculatum30 / 34
0.38b58 groundsmokeGayophytum diffusum ssp. parviflorum10 / 19
0.38l  Impressive flat-topped rock outcrop
0.40r  Jct. old road
0.41r  Sign: "San Jacinto Wilderness"
0.42b59 brackenPteridium aquilinum var. pubescens2 / 111
0.42   Center of long curve right
0.43l  (woodland spurge, Euphorbia palmeri)
0.43l60 Grinnell's beardtonguePenstemon grinnellii var. grinnellii30 / 516
0.44r61 Parish's tauschiaTauschia parishii10 / 55
0.45l  View of Lily Rock and Tahquitz Peak
0.46   Trail curves right
0.48   Switchback left
0.50b62 western wallflowerErysimum capitatum ssp. capitatum20 / 219
0.55r63 white catch-flySilene verecunda ssp. platyota2 / 112
0.60   Trail curves left 90°
0.64   Switchback right, then trail curves left
0.67   Trail curves right at drainage, then curves left again; some honking pink-bracted manzanita, Arctostaphylos pringlei ssp. drupacea here
0.72   Switchback left
0.76   Switchback right
0.78   Switchback left
0.81   Switchback right
0.83r  View of desert
0.85r  View of Garner Valley, Lake Hemet, Palomar, Thomas, Cahuilla and Hot Springs Mountains
0.85r  (rock goldenbush, Ericameria cuneata var. cuneata)
0.88   Switchback left
0.92l  Rock / tree window; trail curves right at ridge
0.96   Switchback right
1.03   Switchback left
1.07   Switchback right
1.10   Switchback left
1.11l  short-flowered monardella in bloomMonardella nana ssp. tenuiflora /  
1.11l64 snow-plantSarcodes sanguinea2 / 29
1.13l  View of Santa Margarita Mountains at 9:00, to left of Santa Ana Mountains
1.16   Switchback right
1.19   Trail curves left at ridge
1.24   Switchback left
1.25r65 southern mountain-monardellaMonardella australis10 / 38
1.29   Switchback right
1.33r  Good view of Desert Divide and Santa Rosa Mountain peaks; switchback left
1.38   Switchback right
1.40   Switchback left
1.43l  (fir mistletoe, Phoradendron pauciflorum)
1.43   Switchback right and curve left 90°
1.58   Switchback left at rock window with 3 subpanes
1.62   Switchback right
1.65   Switchback left
1.67   Switchback right
1.76   Y-jct; trail splits for 0.02 miles; stay right
1.79   Switchback right and curve left
1.79l  Sign: "Entering San Jacinto Wild Area"
1.79l66~spreading dogbaneApocynum androsaemifolium+10 / 14
1.82r  View of Tahquitz Lookout; local high point; trail briefly descends
1.88   Local low point at drainage to east; only sandy section of trail; next short stretch is not as steep
1.88r67 pinedropsPterospora andromedea4 / 26
    Check mileage from here to Ivesia gully; uphill and downhill differ by 0.10 miles
1.94l68 bush chinquapinChrysolepis sempervirens50 / 99
2.04   Trail curves right at ridge
2.17b69 green-leaf manzanitaArctostaphylos patula50 / 912
2.26l70 curl-leaf mountain-mahoganyCercocarpus ledifolius var. intermontanus10 / 910
2.30   Trail curves left 90° at gully leading uphill to steep cliffs with Tahquitz ivesia, Ivesia callida
    Look for Potentilla rimicola
2.38   Switchback right
2.44   Switchback left just short of ridge with many footprints giving access to the steep cliffs with Tahquitz ivesia, Ivesia callida
2.52   Switchback right just below saddle
2.64   Switchback left at huge split boulder
2.70r71 California groundconeBoschniakia strobilacea99 / 93
2.74   Switchback right
2.80   Switchback left
2.88   Switchback right
3.01   Switchback left
3.10r72 granite prickly phloxLeptodactylon pungens / 7
3.15   Switchback right
3.17   Switchback left
3.21   Switchback right
3.24r  (limber pine, Pinus flexilis)
3.24r73~San Jacinto Mtns. daisyErigeron breweri var. jacinteus1 / 11
3.27   Switchback left
3.30r  southern mountain-monardellaMonardella australis /  
3.31r74 Parish's bedstrawGalium parishii3 / 27
3.31r75 Martin's paintbrushCastilleja applegatei ssp. martinii2 / 215
3.31r  (Check for different grass)
3.31r76 rock buckwheatEriogonum saxatile3 / 111
3.34   Switchback right at saddle
3.38r  Check if this is a limber or lodgepole pine
3.38l  (beaked penstemon, Penstemon rostriflorus)
3.39l77 Parish's needlegrassAchnatherum parishii1 / 17
3.40l  (San Jacinto prickly phlox, Leptodactylon jaegeri)
3.45   Switchback left
3.48   Switchback right
3.50   Switchback left
3.52   Switchback right
3.55   Switchback left
3.55   Switchback right
3.56l78 limber pinePinus flexilis40 / 97
3.56   Jct. to Tahquitz Lookout; go right on it.
3.58   Trail begins a series of zig-zags.
3.59l79 mountain sprayHolodiscus microphyllus var. microphyllus2 / 27
3.60   Tahquitz Lookout base.
3.61   Catwalk of Tahquitz Lookout; elevation 8846 feet (2696 m); return to trail jct.
3.68   Jct. main South Ridge Trail; go right on it
    Species below are directly from guide going downhill; some have earlier locations
3.71r80?baby rosette - Arabis?
3.71r81 mountain holly fernPolystichum scopulinum3 / 11
3.71r  (spike trisetum, Trisetum spicatum)
3.74   Trail curves right 90°.
3.76   Switchback left
3.77   Switchback right
3.77b82 white-veined wintergreenPyrola picta10 / 43
3.81   Trail curves right
3.83r83 Watson's spike-mossSelaginella watsonii1 / 14
3.83r  Alpine form of rush blue grass, Poa secunda ssp. juncifolia, formerly called Poa nevadensis.
3.83r84 shaggy-haired alumrootHeuchera hirsutissima6 / 21
3.90   Trail curves right
3.90l  (limber-pine dwarf-mistletoe, Arceuthobium cyanocarpum)
3.94r85 Parish's campionSilene parishii10 / 26
3.98r86 lodgepole pinePinus contorta ssp. murrayana20 / 97
4.05b87 Parish's snowberrySymphoricarpos rotundifolius var. parishii2 / 110
4.06r88 western needlegrassAchnatherum occidentale ssp. occidentale2 / 21
4.06r89?mystery rush / sedge?2 / 2 
4.06r90 San Jacinto Mts. Keckiella (in chinquapin)Keckiella rothrockii var. jacintensis1 / 14
4.08r91 pussy pawsCalyptridium monospermum5 / 16
4.08   End South Ridge Trail at Chinquapin Jct with the PCT, elevation 8570 feet (2610 m)

Comments On Specific Species

Poa secunda ssp. juncifolia. Plants at mile 0.25 are very different-looking, and as a result formerly were called Poa nevadensis. However, Elizabeth Anne Kellogg showed in 1985 that these different forms are environmentally induced.

Curiously, most vouchers from this area are of ssp. secunda, which is clearly ruled out by every characteristic in the Jepson Manual key. The lemmas are glabrous, not hairy; the ligule of the sterile shoots is only 1 mm and truncate, not greater than 2 mm and acute; and the leaf blade is firm, retaining its shape, not withering after bloom. The non-withering leaves is the easiest trait to observe in the field.

Rhamnus californica. See note in Devils Slide Trail Guide.

Apocynum androsaemifolium. We've never found blooms on these specimens so far. Interestingly, Hall found these same short plants in this location in 1901, and also never observed blooms on them. He did find blooms on specimens in Round Valley on August 13, 1897.


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Copyright © 2006-2007 by Tom Chester, James Dillane and Dave Stith.
Permission is freely granted to reproduce any or all of this page as long as credit is given to us at this source:
http://tchester.org/sb/plants/guides/srt_up.html
Comments and feedback: Tom Chester
Updated 24 June 2007.