Flora of Boy Scout Trail Area, Joshua Tree National Park

This flora was compiled from vouchers, iNaturalist observations, and from one day of fieldwork along the Boy Scout Trail and a short hike south of the Quail Springs Picnic Area by Tom Chester, Walt Fidler, Mike Crouse, Michael Charters and Bill Bulger, on 3 November 2017, after this area had received monsoonal rain eight weeks earlier, on the weekend of 10 September 2017.

A separate page gives a list of the species observed in bloom on 3 November 2017, along with some pictures of some of the plants in bloom.

Georeferenced vouchers were searched at the Consortium of California Herbaria on 1 November 2017, in the rectangle from 34.03 to 34.12° N. Latitude, and -116.23 to -116.17° E. Longitude. The voucher of Quercus turbinella was taken as a voucher of Q. cornelius-mulleri, since Q. turbinella was misapplied to these plants before the recognition of Q. cornelius-mulleri. No attempt was made to check for reasonableness of most of the determinations. 269 vouchers were retrieved, of 145 species.

iNaturalist was searched for roughly the same area. One species, Opuntia acanthocarpa, was tossed as being out of range; see Opuntia acanthocarpa var. coloradensis. Another species, Baileya multiradiata, was a misdetermination of B. pleniradiata. The other observations added 62 taxa not in the voucher flora. No attempt was made to verify most of those determinations; the reader can see the pictures of those species, and some of the vouchered species, totaling 126 species, at iNaturalist. This link uses the "Place" I've defined called the Boy Scout Trail Area.

One additional taxon, Eschscholzia papastillii, was added to the list since the range map for this newly-defined species (Still 2014) includes this area.

The fieldwork added 20 taxa to the list, 19 from the immediate area of the Boy Scout Trail and 1 from Quail Springs.

The total checklist contains 228 taxa.

Basic information about the checklist presentation and links:

An asterisk before the Common Name indicates a non-native taxon.

The column with header #V gives the number of vouchers. If there were no vouchers of a taxon, but it was given in iNaturalist, the column contains iN. As mentioned above, one species was added from a range map, and has IR in this column, standing for In Range.

The column with header #Pls gives the minimum number of plants observed on 3 November 2017 in the area of the Boy Scout Trail (not including plants seen at Quail Springs), up to a maximum of 99 plants for each species. Since this survey was not done in the spring, most of the annuals and some of the perennials were either not observed at all, or have much lower numbers recorded than would have been seen in a spring survey.

Version for printing, without other text on this page: html (8 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)

#FamScientific Name(*)Common Name#V#Pls
Ferns
1PteCheilanthes covilleibeady lipfern120
2PteCheilanthes parryiwoolly lipfern1 
3PtePellaea mucronata var. mucronatabird's-foot fern12
4PtePentagramma triangularis ssp. triangularisgoldback fern1 
Gymnosperms
5CupJuniperus californicaCalifornia juniperiN25
6EphEphedra nevadensisNevada ephedra399
7PinPinus monophyllapinyon pine125
Eudicots
8AizTrianthema portulacastrumhorse-purslane1 
9AmaAmaranthus fimbriatusfringed amaranthiN99
10AnaRhus aromaticabasketbush260
11ApiLomatium mohavenseMojave lomatium13
12ApoAmsonia tomentosawoolly amsonia4 
13ApoFunastrum utahenseUtah vine milkweed2 
14AstAcamptopappus sphaerocephalus var. sphaerocephalusgoldenhead120
15AstAdenophyllum cooperiCooper's dogweed199
16AstAdenophyllum porophylloidesSan Felipe dogweed1 
17AstAmbrosia acanthicarpabur-ragweediN99
18AstAmbrosia dumosaburroweed 1?
19AstAmbrosia salsola cheesebushiN99
20AstAnisocoma acaulisscale-bud1 
21AstArtemisia ludoviciana ssp. incomptamountain mugwort 99
22AstBahiopsis parishiiParish's goldeneye135
23AstBaileya pleniradiatawoolly marigold199
24AstBebbia juncea var. asperasweetbushiN 
25AstBrickellia atractyloides var. argutaCalifornia spear-leaved brickellia250
26AstBrickellia desertorumdesert brickellia 10
27AstBrickellia incanawoolly brickellia2 
28AstChaenactis fremontiiFremont pincushion1 
29AstChaenactis stevioidesdesert pincushion14
30AstChaenactis xantianaXantus' chaenactis1 
31AstCirsium neomexicanumdesert thistle 20
32AstEncelia actoniActon encelia 2
33AstEricameria cooperi var. cooperiCooper's goldenbush399
34AstEricameria cuneata var. spathulatawide-leaved rock goldenbush199
35AstEricameria linearifolianarrowleaf goldenbush25
36AstEriophyllum confertiflorum var. confertiflorumgolden yarrowiN 
37AstEriophyllum pringleiPringle's woolly sunflower1 
38AstEriophyllum wallacei var. wallaceiWallace's woolly daisyiN 
39AstGutierrezia microcephalasticky snakeweed199
40AstLayia glandulosawhite tidy-tips2 
41AstLeptosyne californicaCalifornia coreopsisiN 
42AstLogfia arizonicaArizona herba impia1 
43AstLogfia depressadwarf filago2 
44AstMalacothrix glabratadesert dandelioniN5
45AstMalacothrix stebbinsiiStebbins' malacothrix2 
46AstMonoptilon bellidiformedesert star1 
47AstNicolletia occidentaliswestern nicolletia110
48AstPectis papposa var. papposachinch-weediN99
49AstPluchea sericeaarrow-weediN 
50AstPseudognaphalium canescenswhite everlasting14
51AstRafinesquia californicaCalifornia chicory3 
52AstStephanomeria exigua ssp. exiguaslender wreathplant 99
53AstStylocline psilocarphoidesPeck's stylocline1 
54AstTetradymia axillaris var. longispinacatclaw horsebrush199
55AstUropappus lindleyisilver puffs1 
56BorAmsinckia tessellatabristly fiddleneckiN99
57BorCryptantha barbigerabearded cryptantha1 
58BorCryptantha circumscissa var. circumscissacushion cryptantha299
59BorCryptantha dumetorumbush-loving cryptantha3 
60BorCryptantha micrantha var. micranthared-root cryptantha1 
61BorCryptantha pterocaryawing-nut cryptantha1 
62BorCryptantha utahensisscented cryptantha1 
63BorEmmenanthe penduliflora var. penduliflorawhispering bellsiN 
64BorNama demissapurple matiN 
65BorPectocarya setosamoth combseed1 
66BorPhacelia campanularia ssp. vasiformisdesert bluebellsiN10
67BorPhacelia cryptanthalimestone phacelia1 
68BorPhacelia distanscommon phacelia310
69BorPhacelia fremontiiFremont's phacelia1 
70BorPhacelia pedicellatapedicellate phacelia1 
71BorPholisma arenariumsand plantiN1
72BraBoechera glaucovalvulablue-podded rock-cress7 
73BraBoechera perennansperennial rock-cress16
74BraBoechera pulchrabeautiful rock-cressiN 
75BraBoechera xylopodaslender & beautiful rock-cress1 
76BraBrassica tournefortii*Sahara mustardiN 
77BraCaulanthus cooperiCooper's jewel-flower3 
78BraDescurainia pinnatawestern tansy-mustard140
79BraDraba cuneifoliawedge-leaved draba1 
80BraLepidium fremontiidesert pepper-grass1 
81BraLepidium lasiocarpum ssp. lasiocarpumhairy-podded pepper-grass199
82BraSisymbrium altissimum*tumble-mustard1 
83BraSisymbrium irio*London rocketiN 
84BraSisymbrium orientale*Oriental mustardiN 
85BraStanleya pinnata var. pinnataprince's plumeiN 
86BraStreptanthus campestrissouthern jewel-flower1 
87BraThysanocarpus curvipesfringe-pod1 
88CacCylindropuntia echinocarpasilver chollaiN50
89CacCylindropuntia ramosissimapencil cholla299
90CacEchinocereus engelmanniiEngelmann's hedgehog cactusiN50
91CacEchinocereus mojavensisclaret cup440
92CacFerocactus cylindraceusCalifornia barrel cactus25
93CacGrusonia parishiimat cholla1 
94CacMammillaria tetrancistradesert fish-hook cactus1 
95CacOpuntia basilaris var. basilarisbeavertail cactusiN50
96CacOpuntia chloroticapancake prickly-pear 15
97CacOpuntia phaeacanthadesert prickly-pear 1
98CheAtriplex canescens var. canescensfour-wing saltbushiN25
99CheGrayia spinosahop-sage5 
100CheSalsola tragus*Russian thistleiN 
101ConCuscuta denticulatadesert dodder11
102CraDudleya saxosa ssp. aloidesdesert dudleya21
103CucBrandegea bigeloviidesert star-vineiN 
104CucCucurbita palmatacoyote melon 1
105EriArctostaphylos glaucabigberry manzanita1 
106EupChamaesyce albomarginatarattlesnake weediN99
107EupChamaesyce micromeraSonoran spurgeiN10
108EupChamaesyce setilobastarfish (Yuma) spurgeiN5
109EupCroton californicusCalifornia croton1 
110EupDitaxis neomexicanaNew Mexico ditaxis1 
111FabAcmispon maritimus var. brevivexillusshort-bannered coastal lotus1 
112FabAcmispon rigidusdesert lotus130
113FabAcmispon strigosusstrigose lotusiN 
114FabAstragalus acutirostrisbeaked rattle-weed1 
115FabAstragalus bernardinusSan Bernardino milk-vetch1 
116FabAstragalus lentiginosus var. fremontiiFremont's milk-vetch3 
117FabAstragalus lentiginosus var. variabilisfreckled milk-vetch2 
118FabAstragalus palmeriPalmer's milk-vetch199
119FabLupinus andersoniiAnderson's lupine4 
120FabLupinus concinnus ssp. orcuttiibajada lupine11
121FabLupinus excubitusgrape-soda lupine1 
122FabLupinus sparsiflorusCoulter's lupine4 
123FabProsopis glandulosa var. torreyanahoney mesquiteiN 
124FabSenegalia greggiicatclawiN99
125FabSenna armataspiny sennaiN 
126FagQuercus cornelius-mulleridesert scrub oak199
127FagQuercus john-tuckeriTucker's oak1 
128FagQuercus lobata X Quercus cornelius-mullerivalley oak x desert scrub oak1 
129GerErodium cicutarium*redstem filareeiN99
130KraKrameria bicolorwhite rhatanyiN 
131KraKrameria erectaPima rhatany199
132LamMonardella linoides ssp. linoidesnarrowleaf monardella1 
133LamMonardella robisoniiRobison's monardella215
134LamSalvia columbariaechiaiN30
135LamSalvia dorrii var. pilosahairy sage1 
136LamSalvia mohavensisMojave sage1 
137LamSalvia pachyphyllarose sageiN 
138LamScutellaria mexicanaMexican bladder sage199
139LoaMentzelia nitensshining blazing star5 
140MalSphaeralcea ambigua var. ambiguaapricot mallowiN50
141MolMollugo cerviana*carpet-weediN99
142MonCalyptridium monandrumsand cress1 
143NycAbronia villosa var. villosahairy sand-verbenaiN 
144NycBoerhavia coulteri var. palmeriCoulter's spiderling 99
145NycMirabilis laevis var. villosaBigelow's desert four-o'clockiN99
146OleFraxinus velutinavelvet ash1 
147OleMenodora scabra var. glabrescensbroom twinberry1 
148OleMenodora spinescensspiny desert olive1 
149OnaCamissonia campestris ssp. campestrisfield suncup2 
150OnaCamissoniopsis pallida ssp. pallidapale suncup1 
151OnaChylismia claviformis ssp. aurantiacabrown-eyed primroseiN99
152OnaOenothera californicaCalifornia evening-primroseiN 
153OnaOenothera deltoides ssp. deltoidesdune primrose 99
154OroCastilleja chromosanorthwestern paintbrush3 
155OroCordylanthus rigidus ssp. setigerbristly bird's beak120
156PapEschscholzia androuxiiJoshua Tree poppyiN1?
157PapEschscholzia papastilliicryptic desert poppyIR 
158PapEschscholzia parishiiParish's poppyiN 
159PapPlatystemon californicuscream cups1 
160PhrMimulus aurantiacus var. pubescenshairy bush monkeyflower3 
161PhrMimulus bigelovii var. bigeloviiBigelow's monkeyfloweriN 
162PlaKeckiella antirrhinoides var. microphyllalittle-leaved chaparral beardtongue3 
163PlaPenstemon clevelandii var. mohavensisMojave beardtongue43
164PlaPenstemon thurberiThurber's beardtongue8 
165PolEriastrum densifoliumgiant woolly-star  
166PolEriastrum eremicum ssp. eremicumdesert woolly-star199
167PolGilia sinuatarosy gilia2 
168PolGilia stellatastar gilia3 
169PolLeptosiphon aureusgolden linanthus1 
170PolLinanthus bigeloviiBigelow's linanthus3 
171PolLinanthus maculatus ssp. maculatusLittle San Bernardino Mtns. gilia1 
172PolSaltugilia caruifoliacaraway-leaved gilia1 
173PolSaltugilia latimeriLatimer's woodland-gilia1 
174PolCentrostegia thurberired triangles3 
175PolEriogonum angulosumangled-stem buckwheat299
176PolEriogonum brachyanthumshort-flowered buckwheat3 
177PolEriogonum davidsoniiDavidson's buckwheat110
178PolEriogonum fasciculatum var. flavovirideCalifornia buckwheat275
179PolEriogonum inflatumdesert trumpetiN99
180PolEriogonum nidulariumbirdnest buckwheat199
181PolEriogonum plumatellayucca buckwheatiN99
182PolEriogonum pusillumyellow-turbans1 
183PolEriogonum saxatilerock buckwheat1 
184PolEriogonum wrightii var. membranaceumWright's buckwheatiN50
185PolRumex hymenosepaluswild rhubarb1 
186PorPortulaca halimoidesdesert portulaca 99
187RanClematis paucifloravirgin's boweriN 
188RanDelphinium parishii ssp. parishiiParish's larkspur220
189RhaRhamnus ilicifoliahollyleaf redberryiN3
190RosCercocarpus betuloidesbirch-leaf mountain-mahogany2 
191RosColeogyne ramosissimablack brushiN99
192RosIvesia saxosarock ivesia4 
193RosPrunus fasciculatadesert almond699
194RosPurshia tridentata var. glandulosadesert bitterbrush 15
195RubGalium angustifolium ssp. gracillimumslender bedstraw2 
196RubGalium stellatumstar-flowered bedstraw1 
197RutThamnosma montanaturpentine broom1 
198SimSimmondsia chinensisjojobaiN25
199SolDatura wrightiisacred datura 5
200SolLycium andersoniiAnderson's boxthorn199
201SolLycium cooperiCooper's boxthorn499
202SolNicotiana obtusifoliadesert tobacco 99
203SolPhysalis crassifoliathick-leaved ground cherryiN2
204VisPhoradendron californicumdesert mistletoeiN99
205ZygLarrea tridentatacreosote bush199
206ZygTribulus terrestris*puncture-vineiN 
Monocots
207AgaYucca brevifoliajoshua tree299
208AgaYucca schidigeraMohave yucca199
209AllAllium fimbriatum var. fimbriatumfringed onion1 
210AllAllium parishiiParish's onion2 
211LilCalochortus kennedyi var. kennedyired mariposa1 
212PoaAristida purpurea var. purpureapurple three-awn120
213PoaArundo donax*giant reediN 
214PoaBouteloua barbata var. barbatasix-weeks gramaiN 
215PoaBouteloua curtipendulaside-oats grama 1
216PoaBromus madritensis ssp. rubens*red bromeiN99
217PoaDasyochloa pulchellafluff grass 99
218PoaFestuca bromoides*brome fescue1 
219PoaHilaria rigidabig galleta199
220PoaMelica frutescenstall melica12
221PoaMelica imperfectacoast-range melic1 
222PoaMuhlenbergia porteriPorter's muhly 99
223PoaSchismus barbatus*Mediterranean schismusiN 
224PoaStipa hymenoidesIndian ricegrass220
225PoaStipa parishii var. parishiiParish's needlegrass1 
226PoaStipa speciosadesert needlegrass 5
227RusNolina parryiParry's nolina420
228TheDichelostemma capitatumblue dicksiN 


Voucher data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/; 1 November 2017).


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Copyright © 2017 by Tom Chester, Walt Fidler, Mike Crouse, Michael Charters and Bill Bulger.
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/plants/floras/desert/boy_scout_trail_area.html
Comments and feedback: Tom Chester
Last update: 6 November 2017