Flora of Tahquitz Peak and Red Tahquitz Peak Area, San Jacinto Mountains

Procedure For Compiling The Checklist
Important Caveats
Taxa Rejected From The Checklist


This is a checklist for the area that includes Tahquitz Peak, Red Tahquitz Peak, the ridgeline between them, and a short ridgeline to the north of Tahquitz Peak. It has been compiled from online vouchers; from fieldwork where the ridge was targeted; and from the portion of our plant trail guides in this area.

The survey coverage of the four sections of this area are:

Don Rideout took iNaturalist observations with pictures of every species seen in the 4 September 2018 survey. Note that this link returns one additional observation, Cordylanthus rigidus, which was photographed on our drive to Idyllwild, and was not found in the North Ridge survey.


The following map shows the location of the floral area targeted here:

The dashed purple line delineates the boundary, which follows roughly the 8200 foot elevation contour (update in 2018: we extended the boundary to about 8150 feet near Saddle Junction, not yet shown on the map, since that area is clearly part of the Ridge flora). Solid blue lines are trails, each of which have been botanized extensively (see the plant trail guides for each one). Note that the PCT has been rerouted in places from the trail shown on the base map. Dashed blue lines are floristic surveys done once each so far that compiled checklists and estimated plant species abundances. The one near Tahquitz Saddle was done on 23 July 2008; the one at Red Tahquitz was done on 28 July 2008. The locations of subsequent surveys have not yet been added to this map.

The area is shown in this photograph taken by James Dillane from Wellman Divide on 7 August 2007:

The floristic area boundary is only roughly drawn in this picture. Refer to the topographic map above for its precise location. See also picture without labeling, and pictures taken by James Dillane from the south side in Garner Valley on 3 September 2007: with labels and without labels.

The 8200 foot contour was chosen for several reasons:

The floristic area boundary was modified to be a bit higher than the 8200 foot contour on the north, in order to avoid extending that ridgeline into the Saddle Junction Area (update in 2018: we extended the boundary to about 8150 feet near Saddle Junction, not yet shown on the map, since that area is clearly part of the Ridge flora). It was modified to be a bit lower along Little Tahquitz Creek, in order to make a clean boundary at the junction of the PCT and Little Tahquitz Valley Trail.

Procedure For Compiling The Checklist

(To be supplied)

Checklist for Tahquitz and Red Tahquitz Area

The following gives some basic information about this checklist.


An asterisk before the common name indicates a non-native species.

The columns labeled #Plants gives the number of plants of each species that were found in the surveys of each area. The number is a minimum estimate of the number of plants, up to a maximum of 99 plants. The main intent of this column is to indicate the species for which we found few plants or locations.

The column headers are as follows:

A V in the # plants column indicates a vouchered species we have not yet seen.

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)

#FamScientific Name
Link goes to Jepson eFlora
(*)Common Name
Link goes to Calphotos
# Plants
1SelagSelaginella asprellabluish spike-moss   5
2SelagSelaginella watsoniiWatson's spike-moss107014
3AspleAsplenium septentrionalenorthern spleenwort  11 
4DennsPteridium aquilinum var. pubescensbracken   50
5DryopPolystichum scopulinummountain holly fern 4  
6PolypPolypodium hesperiumwestern polypody 12  
7PteriPellaea mucronata var. californicaCalifornia cliff-brake   21
8WoodsCystopteris fragilisbrittle bladder fern  15
9CupreCalocedrus decurrensincense-cedar1   
10PinacAbies concolorwhite fir9989999
11PinacPinus contorta ssp. murrayanalodgepole pine1020 99
12PinacPinus flexilislimber pine7599280
13PinacPinus jeffreyiJeffrey pine8073099
14PinacPinus lambertianasugar pine99255099
15AdoxaSambucus nigra ssp. caeruleablue elderberry  1 
16ApiacSphenosciadium capitellatumranger's buttons  101
17AsterAntennaria rosearosy everlasting, pussytoes  10 
18AsterArtemisia dracunculuswild tarragon1   
19AsterArtemisia ludoviciana ssp. incomptamountain mugwort   30
20AsterCorethrogyne filaginifoliaCalifornia-aster   20
21AsterEricameria cuneata var. cuneatarock goldenbush3   
22AsterEricameria nauseosa var. bernardinaSan Bernardino rubber rabbitbrush9912050
23AsterErigeron breweri var. jacinteusSan Jacinto Mtns. daisy 2 10
24AsterEriophyllum confertiflorum var. confertiflorumgolden yarrow   99
25AsterHieracium horridumprickly hawkweed204051
26AsterHulsea vestita ssp. callicarphabeautiful hulsea10  10
27AsterSolidago velutina ssp. californicagoldenrod   50
28BoragCryptantha micranthared-root cryptantha99   
29BoragPhacelia mutabilischangeable phacelia  5030
30BrassBoechera californicaCalifornia elegant rock-cress 20  
31BrassBoechera platyspermabroad-seeded rock-cress 6310
32BrassBoechera retrofracta Xmountain rock-cress   6
33BrassBoechera sp. nov.San Jacinto rock cress67   
34BrassDraba saxosaSan Jacinto rock draba V  
35BrassErysimum capitatum var. capitatumwestern wallflower40 2080
36CapriSymphoricarpos rotundifolius var. parishiiParish's snowberry3045099
37CaryoSilene parishiiParish's campion50991015
38CaryoSilene verecundawhite catch-fly10 3015
39ChenoChenopodium atrovirensforest goosefoot1 525
40EricaArctostaphylos patulagreen-leaf manzanita9999560
41EricaArctostaphylos patula X A. pringlei ssp. drupaceahybrid manzanita   1
42EricaArctostaphylos pringlei ssp. drupaceapink-bracted manzanita   20
43EricaChimaphila menziesiilittle prince's pine120210
44EricaChimaphila umbellatapipsissewa V  
45EricaPterospora andromedeapinedrops31012
46EricaPyrola dentatatoothed wintergreen 10  
47EuphoEuphorbia luridawoodland spurge   3
48FabacAcmispon nevadensis var. nevadensisSierra Nevada lotus   2
49FabacLupinus hyacinthinusSan Jacinto lupine13104030
50FabacLupinus polyphyllus var. burkeibigleaf lupine   10
51FabacTrifolium monanthum ssp. grantianummountain carpet clover  10 
52FagacChrysolepis sempervirensbush chinquapin99999999
53FagacQuercus chrysolepiscanyon live oak3335599
54GrossRibes cereum var. cereumwax currant21 1021
55GrossRibes nevadensemountain pink currant  55
56GrossRibes roezlii var. roezliiSierra gooseberry1  10
57HyperHypericum anagalloidestinker's penny  20 
58LamiaMonardella australis ssp. australissouthern mountain-monardella651 30
59LamiaMonardella nanashort-flowered monardella  321
60LamiaSalvia pachyphyllarose sage   30
61MontiCalyptridium monospermumpussy paws99602040
62MontiCalyptridium parryi var. parryiParry's sand cress99   
63OnagrEpilobium canum ssp. latifoliummountain California-fuchsia9999560
64OnagrGayophytum oligospermumpinegrove groundsmoke20  99
65OrobaCastilleja applegatei ssp. martiniiMartin's paintbrush1 520
66OrobaKopsiopsis strobilaceaCalifornia groundcone1   
67OrobaPedicularis semibarbatapine lousewort50 5099
68PhrymMimulus breweriBrewer's monkeyflower  2050
69PhrymMimulus moschatusmusk monkeyflower  4010
70PhrymMimulus pilosusfalse monkeyflower  20 
71PhrymMimulus suksdorfiiSuksdorf's monkeyflower   50
72PhrymMimulus tilingiilarger mountain monkeyflower  2020
73PlantKeckiella rothrockii var. jacintensisSan Jacinto Mts. keckiella9923099
74PlantPenstemon grinnellii var. grinnelliiGrinnell's beardtongue14 35
75PlantPenstemon labrosusSan Gabriel beardtongue25  10
76PlantPenstemon rostriflorusbeaked penstemon39 2020
77PolemAllophyllum divaricatumpurple false-gilia  10 
78PolemLinanthus jaegeriSan Jacinto prickly phlox 115
79PolemLinanthus pungensgranite prickly phlox502 10
80PolygEriogonum apiculatumSan Jacinto buckwheat  3020
81PolygEriogonum nudum var. pauciflorumnaked buckwheat5 599
82PolygEriogonum saxatilerock buckwheat62  5
83PolygEriogonum wrightii var. subscaposumWright's buckwheat   30
84PolygPolygonum douglasiiDouglas' knotweed   30
85RanunAquilegia formosawestern columbine  1020
86RhamnCeanothus cordulatusmountain whitethorn99151040
87RhamnFrangula californicaCalifornia coffeeberry   20
88RosacCercocarpus ledifoliuscurl-leaf mountain-mahogany99451021
89RosacHolodiscus discolor var. microphyllusmountain spray70531
90RosacIvesia santolinoidesSierra mousetail   3
91RosacPotentilla rimicolacliff cinquefoil995399 
92RubiaGalium angustifolium ssp. jacinticumSan Jacinto Mtns. bedstraw   99
93RubiaGalium parishiiParish's bedstraw302 5
94SalicSalix scoulerianaScouler's willow  51
95SaxifHeuchera hirsutissimashaggy-haired alumroot9925530
96ViolaViola macloskeyismall white violet   10
97ViscaArceuthobium campylopodumlimber-pine dwarf-mistletoe 10  
98ViscaPhoradendron bolleanumfir mistletoe5   
99AlliaAllium burlewiiBurlew's onion9920 99
100CyperCarex fractafragile sheath sedge  4010
101CyperCarex rossiiRoss' sedge2915 5
102CyperCarex sentaswamp sedge   10
103CyperCarex subfuscabrown sedge5 1030
104JuncaJuncus longistylislong-styled rush  99 
105OrchiCorallorhiza maculataspotted coralroot1  1
106PoaceAgrostis idahoensisIdaho bentgrass  205
107PoaceElymus elymoidessquirreltail35 115
108PoaceElymus trachycaulus ssp. trachycaulusslender wheatgrass   10
109PoaceGlyceria elatatall mannagrass  1020
110PoacePoa fendleriana ssp. longiligulaFendler's blue grass   10
111PoacePoa secunda ssp. juncifoliarush blue grass 5  
112PoaceStipa occidentalis var. occidentaliswestern needlegrass175055
113PoaceStipa parishii var. parishiiParish's needlegrass32 30
114PoaceTrisetum spicatumspike trisetum 1  

Taxa Rejected From The Checklist

Taxa Rejected Due To Uncertain Locations

To be supplied.

Taxa Rejected Due To Probably-Incorrect Determinations

To be supplied.

Voucher data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).

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Copyright © 2008-2018 by Tom Chester, Dave Stith, James Dillane, Don Rideout, 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:
Comments and feedback: Tom Chester
Last update: 17 September 2018