Plant Guide to Skyline Trail, San Jacinto Mountains

Introduction and Explanation of Plant Trail Guides

Highlights of This Trail
Fieldwork Dates and Summary of List Changes With Time
Botanical Trip Reports
The Plant Guide
Comments On Specific Species


This plant trail guide includes only the results of a single trip on 21 August 2007 by Tom Chester and Dave Stith. The Family Order Flora of this trail and surrounding area contains the results of a second trip on 31 August 2012 by Tom Chester, Dave Stith and Tarja Sagar.

A free wilderness permit is required, available at the Ranger Station.

Highlights of This Trail

The botanical highlights of this trail are:

Number of Unique Taxa On This Trail

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 DateVisit ## taxa# "?"# "sp"# "~"# "ssp"

Botanical Trip Reports

The Plant Guide

Version for printing, without lines and other text on this page: html (3 pages) or pdf Clickbook booklet (1 double-sided page). (See printing instructions for an explanation of these options)

See Explanation of Plant Trail Guides for an explanation of the column headers.

MileS#id?Common NameLatin Name#here#all
0.00   Begin guide at saddle at edge of Long Valley, elevation ~8420 feet (2565 m)
0.00r1 Jeffrey pinePinus jeffreyi50 / 998
0.00l  (San Bernardino rubber rabbitbrush, Chrysothamnus nauseosus ssp. bernardinus)
0.00r2 white firAbies concolor99 / 9100
0.01l3 San Bernardino rubber rabbitbrushChrysothamnus nauseosus ssp. bernardinus30 / 972
0.01l  (sugar pine, Pinus lambertiana)
0.01   Trail is braided, with many switchbacks, too many to record here.
0.02r4 San Jacinto Mts. keckiellaKeckiella rothrockii var. jacintensis30 / 940
0.03l5 sugar pinePinus lambertiana99 / 974
0.04l  (Grinnell's beardtongue, Penstemon grinnellii var. grinnellii)
0.11r  (canyon live oak, Quercus chrysolepis; Parish's bedstraw, Galium parishii)
0.11r6 little-leaf mock orangePhiladelphus microphyllus20 / 918
 r  (wide-leaved rock goldenbush, Ericameria cuneata var. spathulata)
0.14   View of rock peak we're heading toward
0.16l  (bush chinquapin, Chrysolepis sempervirens)
0.17r7 canyon live oakQuercus chrysolepis99 / 986
0.17   Home of Philadelphus at San Jacinto
0.18l8 Grinnell's beardtonguePenstemon grinnellii var. grinnellii30 / 949
0.19l9 Parish's bedstrawGalium parishii40 / 938
0.20l  (Sign: “Boundary state game refuge”)
0.24l10 mountain sprayHolodiscus microphyllus var. microphyllus5 / 334
0.26l11~little prince's pineChimaphila menziesii1 / 126
0.26   Elevation 8000 feet (2440 m)
0.26l12sp Achnatherum? /  
 l  (fir mistletoe, Phoradendron pauciflorum)
0.27l13sp Monardella sp.10 / 3 
0.28l14 granite prickly phloxLeptodactylon pungens10 / 348
0.28l  (curl-leaf mountain-mahogany, Cercocarpus ledifolius)
0.31l15 curl-leaf mountain-mahoganyCercocarpus ledifolius5 / 325
0.34   Now on ridge; view of tram tower
0.34l sp(Ribes or Acer in distance below trail)
0.34   Trail turns right and leaves ridge. After a few more tight switchbacks, trail has a somewhat level traverse to the southeast. Elevation 7800 feet (2380 m)
0.39   Cross small drainage
0.40l16 fir mistletoePhoradendron pauciflorum10 / 930
0.45l  (Parry's nolina, Nolina parryi; desert Parry manzanita, Arctostaphylos parryana ssp. desertica)
 r  (goldenrod, Solidago californica)
0.51   Cross bigger drainage
0.55r  (mountain California-fuchsia, Epilobium canum ssp. latifolium)
0.58r  (shaggy-haired alumroot, Heuchera hirsutissima)
0.61   Area is similar to the Desert Divide Trail area now
0.65   End somewhat level stretch; elevation 7600 feet (2315 m)
0.68   Cross small drainage
0.69l  (San Jacinto lupine, Lupinus hyacinthinus)
0.69r17 Wright's buckwheatEriogonum wrightii var. subscaposum50 / 943
0.70b18 San Jacinto lupineLupinus hyacinthinus10 / 367
0.70b19 pink-bracted manzanitaArctostaphylos pringlei ssp. drupacea20 / 535
0.71l20 desert Parry manzanitaArctostaphylos parryana ssp. desertica20 / 93
0.71   Trail turns left 90° and parallels ridge
0.71r sp(Eriodictyon sp.)
0.71   (Parish's goldenbush, Ericameria parishii var. parishii)
0.74b21spbird's beakCordylanthus sp.99 / 9 
0.74r  (narrowleaf goldenbush, Ericameria linearifolia)
0.74l22sppoa?Poa fendleriana?10 / 5 
0.74r  (needlegrass, Achnatherum sp.)
0.78b23 squirreltailElymus elymoides10 / 472
0.79r24sppenstemonPenstemon rostriflorus or P. labrosus5 / 3 
0.80l25 Coulter pinePinus coulteri10 / 927
0.80   Pine forest is petering out here
0.80r26 Parry's nolinaNolina parryi / 18
0.81r  (wide-leaved rock goldenbush, Ericameria cuneata var. spathulata)
0.81l27sp Eriodictyon sp. /  
0.81l28 slender everlastingGnaphalium canescens ssp. thermale5 / 226
0.85l ~(California brickellbush, Brickellia californica)
0.86   Elevation 7200 feet (2195 m)
0.86r29 cupped-leaf ceanothusCeanothus greggii var. perplexans10 / 323
0.86   Dense patch of pines below
0.89r30 San Jacinto Mtns. bedstrawGalium angustifolium ssp. jacinticum30 / 326
0.89r  (chaparral yucca, Yucca whipplei)
0.89l31~birch-leaf mountain-mahoganyCercocarpus betuloides var. betuloides2 / 245
0.90b32 Wright's buckwheatEriogonum wrightii var. membranaceum10 / 333
0.90l33 goldenrodSolidago californica / 113
0.91r34 wide-leaved rock goldenbushEricameria cuneata var. spathulata10 / 212
0.91r35 chaparral yuccaYucca whipplei1 / 166
0.91   Field of Ericameria cuneata 
0.93l  (incense-cedar, Calocedrus decurrens, in distance)
0.97l36? like Prunus fremontii /  
0.97r  (incense-cedar, Calocedrus decurrens)
0.99b37 *downy bromeBromus tectorum30 / 382
  38 Parish's goldenbushEricameria parishii var. parishii / 8
0.99l39 incense-cedarCalocedrus decurrens1 / 160
1.01l40 bigberry manzanitaArctostaphylos glauca1 / 120
 r41 mountain whitethornCeanothus cordulatus / 73
1.03l42 narrowleaf goldenbushEricameria linearifolia / 23
1.03   Last Pinus coulteri just below this position
1.03   End plant trail guide; elevation ~6880 feet (2095 m)

Mile: 0.00 includes all mileages from 0.000 to 0.009; etc.

S: Side of trail on which the first occurrence is found: left, right, both, or center

#: On-Trail species are numbered in order of first occurrence on trail (touchable without leaving the trail). Off-trail species are in parentheses.

id?: Species without an entry in this column are positively identified. "?" means we are just guessing the identification; "sp" means the genera is probably known, but the species name is uncertain; "~" means we have 95% confidence that this is the determination, but have not yet positively identified it; "ssp" means the subspecies or variety needs to be determined.

#here gives the minimum number of on-trail plants of this species on this trail, with the number of locations on this trail following the /, using maximum values of 99/9. 1/1 means a single plant in a single location; 10/9 means 10 plants occurring in at least 9 locations, etc.

#all gives the number of plant trail guides, from all over southern California, that contain this taxon.

Comments On Specific Species

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Copyright © 2012 by Tom Chester 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:
Comments and feedback: Tom Chester
Updated 30 August 2012 (link to flora added 23 July 2017).