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

Introduction

See An updated version of the flora for this area; the guide below does not yet have the latest additions.

The Long Valley Nature Trail begins near the bottom of the concrete sidewalk from the upper Tram Station. It is an easy walk of just 0.6 miles, with only 80 feet of elevation gain and loss. The trail has nine informative signs telling a bit about the natural history of this area. No permit is required.

Most of the trail is a loop that can be done in either direction. For this guide, we have traversed the trail counterclockwise as seen from above, heading to the right at the beginning of the loop 0.05 miles from the Tram sidewalk, as shown on the following map:

The Nature Trail is shown in green in the above map; the Desert View Trail that connects with it is shown in dark blue. Although the map shown at the trailhead appears quite different from the above map, they are actually pretty much the same. The differences are:

This trail has been covered just once for this guide, on 8/16/07 in a drought year. More species would probably be seen in a normal rainfall year, as well as more specimens of some species found in the guide.

This trail, and the connecting Desert View Trail, are the only trails, out of the 114 for which we have produced plant trail guides across southern California, that contain a leach field from a septic tank. This leach field produces the densest stand of wild tarragon, Artemisia dracunculus, that we have ever seen.

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 114 trails in our database when this histogram was made; 13 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 "13" or smaller may indicate taxa found only in this area of San Jacinto Mountain.

Number of Trails
Containing A Taxon
Number Of Taxa
On This Trail
% of Taxa
On This Trail
100%
200%
300%
4319%
516%
 
1-5425%
6-1016%
11-15213%
16-2016%
21-25213%
26-30213%
31-35319%
36-4000%
41-4500%
46-5016%
Total Taxa16100%

We found 1 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 DateVisit ## taxa# "?"# "sp"# "~"# "ssp"
8/16/20071170220

We thank Philip Erdelsky for help with the fieldwork on 8/16/07, and for taking the picture of the trail map at the trailhead.

Botanical Trip Reports

The Plant Guide

Version for printing, without lines and other text on this page: html (2 pages) or pdf Clickbook booklet (1 page). (See printing instructions for an explanation of these options)

The mileages in the guide come from a GPS recording of this trail on 8/16/07, measured with Topo!. They are probably accurate to 0.01-0.02 mile.

MileS#id?Common NameLatin Name#here#all
0.00l  Begin guide by going left at sign "Trail Information" near bottom of concrete sidewalk from Tram; elevation ~8395 feet (2559 m). Sign shows a (not very accurate) map of this Nature Loop Trail and Long View Loop (aka Desert View) Trail.
0.00r1 Jeffrey pinePinus jeffreyi50 / 934
0.00b2 San Bernardino rubber rabbitbrushChrysothamnus nauseosus ssp. bernardinus50 / 928
0.00r3 wild tarragonArtemisia dracunculus99 / 932
0.01r4 Parish's snowberrySymphoricarpos rotundifolius var. parishii10 / 318
0.02l  (white fir, Abies concolor)
0.02l  Jct. blocked trail (possibly older route of Nature Trail)
0.02l  Sign: "Nature Trail [ahead]"
0.03l  Sign: "Welcome to Long Valley", which now calls this trail the "Long Valley Discovery Trail"!
0.05r5 wax currantRibes cereum var. cereum10 / 321
0.05r  Y Jct. for loop portion of this trail; go right to do the loop in the order of this guide
0.05l6 goldenrodSolidago californica20 / 349
0.07l  Long Valley Meadow; sign: "Fragile Area; stay on trail"
0.08r7 white firAbies concolor10 / 932
0.08l8 lodgepole pinePinus contorta ssp. murrayana5 / 515
0.08r  (yarrow, Achillea millefolium; willow-leaved dock, Rumex salicifolius var. salicifolius; Idaho bentgrass, Agrostis idahoensis)
0.08r9spsedgeCarex sp. like C. fracta30 / 9 
0.08l  Sign: "How special is Long Valley?"
0.08l10 Nevada cinquefoilPotentilla glandulosa ssp. nevadensis1 / 14
0.09r  Jct. use trail
0.09r  (western wallflower, Erysimum capitatum ssp. capitatum)
0.10r  Jct. trail to Adventure Centure (winter sport equipment rental)
0.13l sp(Nebraska or swamp sedge, Carex nebrascensis or C. senta; Mexican rush, Juncus mexicanus)
0.15r  (Parish's bedstraw, Galium parishii; check for different small sedge)
0.15r  (San Jacinto Mts. Keckiella, Keckiella rothrockii var. jacintensis)
0.17r ~(mat muhly, Muhlenbergia richardsonis)
0.17l11spNebraska or swamp sedgeCarex nebrascensis or C. senta10 / 24
0.17l12~tall mannagrassGlyceria elata5 / 24
0.17l13~mat muhlyMuhlenbergia richardsonis5 / 15
0.18r  (little-leaf mock orange, Philadelphus microphyllus; Fendler's meadow-rue, Thalictrum fendleri var. fendleri)
0.18l  Sign: "Birds on the wing"
0.23l  Sign: " 'Cool' plants and birds"
0.25l14 Fendler's meadow-rueThalictrum fendleri var. fendleri2 / 111
0.28l  (ranger's buttons, Sphenosciadium capitellatum)
0.30   Cross Long Valley Creek; low point on trail, elevation 8320 feet (2536 m)
0.30b15 slender hairgrassDeschampsia elongata10 / 19
0.30l  Sign: "Dependent on moisture"
0.30r  South jct. with Desert View Trail; go left
0.35l  Sign: "A different habitat"
0.39r  Sign: "The fight for survival"
0.44r16 western wallflowerErysimum capitatum ssp. capitatum10 / 329
0.44l17 yarrowAchillea millefolium10 / 221
0.45r  North jct. with Desert View Trail; continue ahead on left
0.46r  Sign: "Meet Jeff"
0.51r  Dense field of tarragon, Artemisia dracunculus, due to leach field of septic tank from Tram restrooms
0.53l  Sign: "The fragile meadow"
0.54   End Nature Trail Loop. Continue ahead to the Tram sidewalk, or go back to do the Desert View Trail.
0.59   Tram sidewalk

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


Go to:


Copyright © 2007-2012 by Tom Chester, Eric Baecht 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/long_valley_nature_trail.html
Comments and feedback: Tom Chester
Updated 12 August 2012.