Flora of Santa Rosa Mountains Above 7800 Feet Elevation

shaggy-haired alumroot, Heuchera hirsutissima

© Tom Chester
rose sage, Salvia pachyphylla

© James Dillane

This is a preliminary checklist for the highest elevations of the Santa Rosa Mountains, the area around Santa Rosa Mountain Peak and Toro Peak above an elevation of 7800 feet. This checklist has been compiled from three days of surveying, from online vouchers, and from Zabriskie's Flora of Deep Canyon.

We decided to compile this flora above 7800 feet, for three reasons:

An overview of the San Jacinto Mountain / Santa Rosa Mountain area is given in the Overview to the Flora of Santa Rosa Mountains.

Our Surveys

The following topographic maps show the area covered by this checklist, and the detailed paths covered in the three days of surveying:

Santa Rosa Mountain Peak Survey (= Santa Rosa Peak Survey)

Toro Peak Surveys

Note that peak 7928 is found in both maps, at the lower right in the first map and the upper left in the second map. See also a single larger map that contains both of the above maps.

The surveys were as follows, in time order:

The view of this area as seen looking south from Red Tahquitz Peak is shown in the next photograph (note that west is on the right in this photograph, and on the left in the above topo map):

See also unlabeled image.

See also a larger scale view of the entire Santa Rosa Mountains ridge taken from Red Tahquitz (unlabeled image)

Interestingly, each of our three surveys found almost exactly the same number of species: 69, 70 and 67, in the survey order given above. Together, our surveys found 94 taxa, of which 29 were found in only one of the surveys; 18 in exactly two of the surveys, and 47 in all three surveys.

Amazingly, this distribution is almost exactly that predicted from the usual "Number of species is proportional to roughly the third root of the area" power law distribution. Using the numbers from a fit to our trail data from 2002, the predicted numbers are 30 found in only one of the surveys; 18 in exactly two of the surveys, and 46 in all three surveys. See How Common Are The Plants Of Southern California? for more information.

The Zabriskie Survey

There are three drainage basins in the Santa Rosa Mountains in the area above 7800 feet elevation here. One of those basins, Deep Canyon, has a very comprehensive previous survey for plants. The northern side of the Toro Peak ridge, east of the peak directly south of Stump Spring, is the head of the Deep Canyon drainage.

Jan Zabriskie produced a Flora of Deep Canyon in 1979, which Tom Chester updated in 2006. Species recorded by Zabriskie as occurring above 7800 feet are given in the checklist below.

The other two drainage basins are as follows. West of that drainage divide, the northern side drains into Palm Canyon. The south side drains into Coyote Creek, which initially flows west, turns south at Horse Canyon, and then flows southeast into Borrego Springs.

Santa Rosa Mountains Vouchers

In 2006, Tom Chester compiled a Flora of the Santa Rosa Mountains From Vouchers, which he has updated as he has come across further vouchers from there. The current list was reviewed for species that might occur above 7800 feet, but that were not recorded in our surveys or by Zabriskie as occurring above 7800 feet. A new search for vouchers of those species above 7800 feet elevation was made, which added a few species to the list.

Analysis and Discussion of Checklist

This section has not been written yet. These are just notes to ourselves to expand into this section in the future.

This checklist contains 115 taxa. Of those, 94 were found in our surveys.

correct placement of below 8000 feet surveys in table below, and put it in original spreadsheet.

species previously unrecorded in snrsmtns.

new elevation records.

Remarkable change of vegetation as one crosses over the ridge.

carex, draba in toro east.

sedum just below; draba missed near saddle, but found below, and possibly within toro 1 survey.

Of missed species, High % of annuals.

() for species below 8000 feet at toro.

Z wet species possibly in unsurveyed drainage.

Voucher taxa rejected from checklist: Astragalus purshii, etc.

Checklist for Santa Rosa Mountains Above 7800 Feet Elevation

The checklist follows the taxonomy in the Jepson Manual.

The columns in the checklist are as follows:

Version for printing, without lines and other text on this page: html (6 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)

#FAMScientific Name(*)Common Name# Plants / # Locations#VZ
1DryopteridaceaeCystopteris fragilisbrittle bladder fern/// Z
2DryopteridaceaeWoodsia oreganaOregon cliff fern//10/14Z
3PteridaceaePellaea mucronata var. californicaCalifornia cliff-brake10/520/31/13Z
4SelaginellaceaeSelaginella watsoniiWatson's spike-moss///3Z
5CupressaceaeCalocedrus decurrensincense-cedar30/31/11/17Z
6PinaceaeAbies concolorwhite fir99/999/999/96Z
7PinaceaePinus flexilislimber pine/10/210/16Z
8PinaceaePinus jeffreyiJeffrey pine99/999/999/91Z
9PinaceaePinus lambertianasugar pine3/2//1Z
10ApiaceaeSphenosciadium capitellatumranger's buttons/// Z
11ApiaceaeTauschia parishiiParish's tauschia20/33/1/2Z
12AsteraceaeArtemisia dracunculuswild tarragon50/999/940/93Z
13AsteraceaeArtemisia ludoviciana ssp. incomptamountain mugwort50/599/920/32Z
14AsteraceaeBahia dissectaragged-leaf bahia20/350/3/2Z
15AsteraceaeChrysothamnus nauseosus ssp. bernardinusSan Bernardino rubber rabbitbrush50/999/999/92Z
16AsteraceaeChrysothamnus nauseosus ssp. consimilisthreadleaf common rabbitbrush30/330/2/1 
17AsteraceaeChrysothamnus viscidiflorus ssp. viscidiflorussticky-leaved rabbitbrush5/1//  
18AsteraceaeCirsium occidentale var. californicumCalifornia thistle1/1//1Z
19AsteraceaeEricameria cuneata var. spathulatawide-leaved rock goldenbush20/550/510/13Z
20AsteraceaeErigeron foliosus var. foliosusleafy daisy5/21/110/24Z
21AsteraceaeEriophyllum confertiflorum var. confertiflorumgolden yarrow99/999/910/18Z
22AsteraceaeGnaphalium palustrewestern marsh cudweed///1Z
23AsteraceaeGutierrezia sarothraematchweed//20/15Z
24AsteraceaeHieracium horridumprickly hawkweed/20/32/11Z
25AsteraceaeHulsea vestita ssp. callicarphabeautiful hulsea15/715/6/9Z
26AsteraceaeHymenopappus filifolius var. lugensColumbia cutleaf30/4//3Z
27AsteraceaeLessingia filaginifolia var. filaginifoliaCalifornia-aster20/520/310/31Z
28AsteraceaeMachaeranthera canescens var. ziegleriZiegler's aster20/550/930/59Z
29AsteraceaeSolidago californicagoldenrod99/999/999/91Z
30BrassicaceaeArabis holboellii var. pinetorumpinewoods rock-cress10/310/410/11Z
31BrassicaceaeDraba corrugata var. saxosaSouthern California rock draba///4Z
32BrassicaceaeErysimum capitatum ssp. capitatumwestern wallflower2/299/530/94Z
33BrassicaceaeThysanocarpus curvipesfringe-pod///2Z
34CactaceaeOpuntia erinacea var. erinaceaMojave prickly-pear//5/16Z
35CaprifoliaceaeSambucus mexicanablue elderberry//1/12Z
36CaprifoliaceaeSymphoricarpos rotundifolius var. parishiiParish's snowberry10/499/999/96Z
37CaryophyllaceaeSilene parishiiParish's campion20/320/710/59Z
38CaryophyllaceaeSilene verecunda ssp. platyotawhite catch-fly50/920/41/11Z
39ChenopodiaceaeChenopodium fremontiiFremont's goosefoot1/140/250/93Z
40ChenopodiaceaeSalsola tragus*Russian thistle//20/12Z
41ConvolvulaceaeCalystegia occidentalis ssp. fulcratawestern morning-glory30/480/2/1 
42CrassulaceaeSedum niveumDavidson's stonecrop///4Z
43EricaceaeArctostaphylos pringlei ssp. drupaceapink-bracted manzanita50/910/2/9Z
44EricaceaePterospora andromedeapinedrops//(1)1 
45EricaceaePyrola pictawhite-veined wintergreen///1Z
46EricaceaeSarcodes sanguineasnow-plant10/51/1/7Z
47EuphorbiaceaeEuphorbia palmeriwoodland spurge50/530/51/16Z
48FabaceaeAmorpha californica var. californicaCalifornia false-indigo1/1//7 
49FabaceaeAstragalus bicristatuscrested milk-vetch/3/120/27Z
50FabaceaeAstragalus douglasii var. parishiiParish' Jacumba milk-vetch30/9//9Z
51FabaceaeAstragalus leucolobusBig Bear Valley woollypod30/999/910/26Z
52FabaceaeLotus argyraeus var. argyraeuscanyon lotus20/340/95/15Z
53FabaceaeLotus nevadensis var. nevadensisSierra Nevada lotus99/9/(10)4Z
54FabaceaeLupinus excubitus var. austromontanusmountain grape-soda lupine99/930/420/96Z
55FabaceaeLupinus hyacinthinusSan Jacinto lupine99/999/950/94Z
56FabaceaeTrifolium repens*white clover/// Z
57FagaceaeChrysolepis sempervirensbush chinquapin//10/13 
58FagaceaeQuercus chrysolepiscanyon live oak99/940/510/14Z
59GrossulariaceaeRibes cereum var. cereumwax currant50/999/930/97Z
60GrossulariaceaeRibes nevadensemountain pink currant/10/1/2Z
61LamiaceaeMonardella nana ssp. tenuiflorashort-flowered monardella99/999/950/99Z
62LamiaceaeSalvia pachyphyllarose sage99/999/950/39Z
63LinaceaeLinum lewisii var. lewisiiLewis' flax30/3//1Z
64LoasaceaeMentzelia congestaclustered blazing star/// Z
65OnagraceaeEpilobium canum ssp. latifoliummountain California-fuchsia50/320/420/17Z
66OnagraceaeGayophytum diffusum ssp. parviflorumgroundsmoke/10/220/23Z
67OrobanchaceaeOrobanche fasciculataclustered broom-rape/// Z
68PhiladelphaceaePhiladelphus microphylluslittle-leaf mock orange/2/1/3Z
69PolemoniaceaeEriastrum sapphirinumsapphire woolly-star4/1//2Z
70PolemoniaceaeGilia diegensiscoastal gilia///9Z
71PolemoniaceaeGilia ochroleuca ssp. exilisvolcanic gilia///5Z
72PolemoniaceaeLeptodactylon pungensgranite prickly phlox20/550/920/99Z
73PolemoniaceaePhlox austromontanasouthern mountain phlox50/999/92/29Z
74PolygonaceaeEriogonum apiculatumSan Jacinto buckwheat99/250/799/99Z
75PolygonaceaeEriogonum nudum var. pauciflorumnaked buckwheat99/950/330/92Z
76PolygonaceaeEriogonum wrightii var. membranaceumWright's buckwheat10/150/3/9Z
77PolygonaceaeEriogonum wrightii var. subscaposumWright's buckwheat99/999/950/91Z
78PolygonaceaePolygonum arenastrum*knotweed//1/1 Z
79PortulacaceaeCalyptridium parryi var. parryiParry's sand cress///1Z
80RanunculaceaeAquilegia formosawestern columbine/3/1/ Z
81RanunculaceaeThalictrum fendleriFendler's meadow-rue//10/11Z
82RhamnaceaeCeanothus greggii var. perplexanscupped-leaf ceanothus//5/19Z
83RhamnaceaeRhamnus californica (including R. tomentella)California coffeeberry3/1/3/11Z
84RosaceaeCercocarpus betuloides var. betuloidesbirch-leaf mountain-mahogany1/1/1/14Z
85RosaceaeCercocarpus ledifoliuscurl-leaf mountain-mahogany//1/1  
86RosaceaeHolodiscus microphyllus var. microphyllusmountain spray/20/5/  
87RosaceaePotentilla glandulosa ssp. reflexasticky cinquefoil//(1)1Z
88RubiaceaeGalium angustifolium ssp. jacinticumSan Jacinto Mtns. bedstraw99/940/320/12 
89RubiaceaeGalium parishiiParish's bedstraw50/999/950/96Z
90SaxifragaceaeHeuchera hirsutissimashaggy-haired alumroot2/199/950/55Z
91ScrophulariaceaeCastilleja applegatei ssp. martiniiMartin's paintbrush20/550/930/92Z
92ScrophulariaceaeCordylanthus neviniiNevin's bird's beak99/920/130/91Z
93ScrophulariaceaeMimulus floribundusfloriferous monkeyflower///6Z
94ScrophulariaceaeMimulus pilosusfalse monkeyflower///7Z
95ScrophulariaceaePedicularis semibarbatapine lousewort10/320/45/12Z
96ScrophulariaceaePenstemon grinnellii var. grinnelliiGrinnell's beardtongue25/310/230/32Z
97ScrophulariaceaePenstemon labrosusSan Gabriel beardtongue99/999/999/96Z
98SolanaceaeNicotiana attenuatacoyote tobacco//2/12Z
99SolanaceaeSolanum xantipurple nightshade20/4/20/31Z
100ViscaceaeArceuthobium campylopodumpine dwarf-mistletoe50/9//2Z
101ViscaceaePhoradendron pauciflorumfir mistletoe2/2/1/12Z
102CyperaceaeCarex rossiiRoss' sedge99/930/31/1  
103LiliaceaeCalochortus invenustusplain mariposa lily//1/13Z
104PoaceaeAchnatherum hymenoidesIndian ricegrass///1Z
105PoaceaeAchnatherum lettermaniiLetterman's needlegrass/// Z
106PoaceaeAchnatherum occidentale ssp. pubescensElmer's needlegrass/// Z
107PoaceaeAchnatherum parishiiParish's needlegrass15/310/410/11Z
108PoaceaeAgropyron sp.wheatgrass/// Z
109PoaceaeBromus carinatus var. carinatusCalifornia brome20/3//1Z
110PoaceaeBromus grandistall brome//10/12 
111PoaceaeBromus richardsoniifringed brome/10/430/91Z
112PoaceaeBromus tectorum*downy brome20/199/599/92Z
113PoaceaeElymus elymoidessquirreltail99/999/930/95Z
114PoaceaeElymus glaucus ssp. virescensVirginia wildrye/// Z
115PoaceaePoa fendleriana ssp. longiligulaFendler's blue grass40/950/930/92Z

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Copyright © 2009 by Tom Chester, Anne Kelly, James Dillane, Dave Stith, Mike Crouse and Brendan Crill.
Comments and feedback: Tom Chester
Updated 30 July 2009.