Flora of Borrego Palm Canyon

Procedure For Compiling The Checklist
Important Caveats


Borrego Palm Canyon is the most famous and most visited area in Anza-Borrego Desert State Park. It was originally called just Palm Canyon, and was well named since it has the third largest collection of palms in California, after Palm Canyon and Murray Canyon in Palm Springs. Randall Henderson, editor and publisher of Desert Magazine, counted 778 palm trees in the winter of 1940. The Canyon was eventually renamed Borrego Palm Canyon to prevent confusion with Palm Canyon in Palm Springs.

The Canyon was the first piece of property in what was then called Borrego Palms Desert State Park, one of the first State Parks in 1933. The Park Headquarters was originally located at the mouth of the Canyon until around 1957. The 1.4 mile Nature Trail leading to the first palm grove was built in 1933 with hand tools by the first park rangers. The Alternate Trail was built in the late 1960s by the La Cima honor camp inmates, and was known as the La Cima trail briefly. (Source for the historical information: Anza-Borrego A to Z, Diana Lindsay, 2001.)

The Canyon is without question one of the most delightful and special places in Anza-Borrego Desert State Park for a number of reasons. Among them are:

The Canyon also is one of the most reliable places to see flowers in the Borrego Desert. It gets more water than places to its east, due to "spillover rain" from the mountain crest to the west during conditions of orographic rain, which is the most frequent type of rain southern California gets in the winter. Borrego Palm Canyon can sometimes get up to an inch of rain from such storms, whereas locations five miles east get nothing.

February and March flowers also survive better here than points east, for reasons I can only speculate about. Even after long periods without rainfall, the annuals on the alluvial slopes away from the stream can look happy here while annuals to the east are dying. This may be due to a combination of increased shade here, resulting in less evaporation from the soil, along with higher humidity levels at night that might give plants extra water from condensation.

The increased shade is due to earlier sunsets from the higher terrain to the west, plus extensive shade within the canyon itself from its southern walls coupled with the low sun angle in the wintertime. Even places not shaded by the southern walls might benefit from lower maximum daytime temperatures due to nearby shade.

This checklist is a pretty good start at a flora of Borrego Palm Canyon for two reasons. First, many botanists have visited the Canyon over a period of decades and collected specimens. Although I haven't yet retrieved the online vouchers for all areas of the Borrego Desert, I'd be very surprised if any other area of the Borrego Desert had more vouchers than here.

Second, I have spent 15 days from 2003 to 2007 surveying the 3.1 mile Nature Trail / Alternate Trail loop. Seven of those days were in the glorious 2005 prime season that produced a number of new records for the Borrego Desert. On most of those trips I was accompanied by the coauthors of our Plant Guide to that trail. My co-workers and I have also surveyed the Alternate Wash once so far.

Thus the list below is probably the most complete for any area of the Borrego Desert. However, many areas of Borrego Palm Canyon have not yet been explored, so more species will be added to the list in the future.

This checklist is only a start at the flora of this Canyon, since many of the entries come from vouchers I haven't yet reviewed, and I haven't yet vouchered all of the new records I have found so that my determinations can be reviewed. This checklist can only be considered a decent flora after I finish both of those tasks. This checklist will be revised as I work on both of those tasks.


Borrego Palm Canyon is directly west of Borrego Springs:

Only the portion of the Canyon below an elevation of 3000 feet is included in the Flora presented here. The boundaries of this Flora are shown in red in the map below (BPC = Borrego Palm Canyon):

The 3000 feet elevation contour is the jagged line on the left. The straight red lines are the lower-elevation boundaries for this area. The divide on the north is with Henderson Canyon, and the divide on the south is with Hellhole Canyon. The eastern boundary is taken as Borrego Springs Road for now, although I may move that boundary west to the State Park Boundary in the future.

Nearly all of this area in the Canyon is very rugged and has not been explored botanically. The main area of previous study is along the stream and the trails, shown in detail in the next map:

The 1.4 mile long Nature Trail is shown in blue, with two parallel sections in its north-south middle section. The western section is the pre-2003 route; the eastern section is the post-2003 flood route; see details on the changes.

The 1.2 mile Alternate Trail is shown in green. My Plant Guide is to the loop going up the Nature Trail to the first Palm Grove, then retracing the Nature Trail to the junction with the Alternate Trail, and taking the Alternate Trail down.

The red lines near the parking shown the route surveyed on 6 February 2008 for a flora of the Alternate Wash.

Procedure For Compiling The Checklist

The Checklist was compiled from online vouchers and from field work done by myself and coworkers.

The vouchers were obtained from combining several searches of the Consortium of California Herbaria with a search of the San Diego County Plant Atlas, on 7 February 2008.

The first search of the Consortium vouchers retrieved all vouchers bounded by latitudes 33.265 to 33.301° and longitudes of -116.478 and -116.375°. The search retrieved 245 vouchers.

A second search was for all vouchers with the words Borrego and Palm in their locality. (I realized later I should have also searched for Borego, the older spelling for Borrego; I'll do that in the future). That search retrieved 707 vouchers, many of which were in other areas or duplicated taxa found in the first search and were removed. Vouchers that said only Upper Palm Canyon were accepted for now, even though they may have been taken at elevations above 3000 feet. I will work in the future to make sure the final Checklist includes only taxa definitely found below 3000 feet.

The combination of the two searches yielded 384 vouchers of 196 taxa.

Unfortunately, there is no way to search the San Diego County Plant Atlas / San Diego Natural History Museum Herbaria on latitude and longitude, so I couldn't perform the same search for records in the Plant Atlas that have not yet appeared in the Consortium database. But, fortunately, grid cell F23 covers most of my targeted area with only a little extra coverage to the south in the Hellhole Canyon drainage. Grid cell F23 spans latitudes 33.254 to 33.298° and longitudes of -116.458 to -116.430°.

There were 17 additional species found in the Plant Atlas / SD Herbarium vouchers, and I have included them for now in the Flora below. When I get the actual detailed records from the Plant Atlas / SD Herbarium, I will review them and remove those not in the targeted area.

There are thus 213 total taxa vouchered from this Canyon in the Checklist below.

By coincidence, Wayne Armstrong, James Dillane and Michael Charters and I have found the same number of total taxa so far on the loop trail, 213, but our list is substantially different from the list of vouchered taxa. Note that not all of our observed taxa are 100% identified yet, since some were never observed in bloom. Those taxa with only 95% confident determinations are noted in the Checklist.

Of our 213 observed taxa, 119 taxa appear in the list of taxa vouchered from this area, leaving 94 taxa as so-far-unvouchered new records for this Canyon, at least in terms of online vouchers. Of those 94, 29 taxa are recorded in the 1985 Checklist of Vascular Plants of the Anza-Borrego Desert by Duffie Clemons as having been vouchered here or someplace else in Floristic Area #16. Thus at least 65 of those taxa remain to be vouchered.

The number of new records from our trail work is not known yet, since several local herbaria have not finished digitized their vouchers yet. Also, I have already vouchered some of the new taxa found by us, which are counted in the 119 total.

The survey of the Alternate Wash by Wayne Armstrong, Kate Shapiro, Bill Sullivan and myself yielded 57 taxa identified with high enough confidence to list in the following checklist, along with ten other taxa that could not yet be identified due to lack of flowers. Of the 57 taxa, three taxa were species not found on the loop trail, all of which had been vouchered here.

There are thus 216 total taxa that have been located precisely in the field.

The combination of the vouchers and field surveys was then processed to remove probable duplication, and to make the taxa consistent with the 1985 Checklist, by assigning subspecies and varieties to vouchers only determined to the species. The subspecies and varieties were always the nominative ones, which is probably what was meant anyway for the voucher determination, with the exception that the voucher of Artemisia ludoviciana was assigned to ssp. incompta.

The above procedure yielded the 305 taxa given in the checklist below.

Note added 21 January 2016: the flora has been updated from four subsequent surveys of Borrego Palm Canyon, but the above text has not yet been revised with that information.

Important Caveats

Please note the following important caveats about this preliminary Checklist:

Checklist for Borrego Palm Canyon


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

The column #V gives the number of vouchers found in this area, as detailed above.

The column #Pls gives the minimum number of plants observed in the sum of all field surveys, up to a maximum number of 99. An "x" in this column indicates a species for which no abundance estimate has been made. These are almost entirely "wash-down" species, that are present only when brought down from higher elevation by a flash flood. When we next see them, we'll estimate their abundances.

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#FamScientific Name(*)Common Name#V#Pls
1SelSelaginella eremophiladesert spike-moss399
2EquEquisetum hyemale ssp. affinehorsetail 50
3PteAdiantum capillus-venerismaidenhair fern453
4PteCheilanthes covilleibeady lipfern210
5PteCheilanthes parryiwoolly lipfern999
6PteCheilanthes viscidasticky lipfern450
7PteNotholaena californica ssp. californicaCalifornia cloak fern310
8PtePellaea mucronata var. mucronatabird's-foot fern1 
9PtePentagramma triangularis ssp. triangularisgoldback fern2 
10CupJuniperus californicaCalifornia juniper355
11EphEphedra asperaMormon tea675
12EphEphedra californicadesert tea2x
13AcaCarlowrightia arizonicaArizona carlowrightia25
14AcaJusticia californicachuparosa799
15AmaAmaranthus albus*tumble pigweed 1
16AmaAmaranthus fimbriatusfringed amaranth x
17AnaRhus ovatasugar bush2x
18ApiApiastrum angustifoliumwild celery2 
19ApiApium graveolens*celery 2
20ApiDaucus pusillusrattlesnake weed 10
21ApiOenanthe sarmentosawater-parsley1 
22ApoFunastrum cynanchoides var. hartwegiiclimbing milkweed921
23AstAdenophyllum porophylloidesSan Felipe dogweed346
24AstAmbrosia dumosaburroweed499
25AstAmbrosia psilostachyawestern ragweed 99
26AstAmbrosia salsola var. salsolacheesebush799
27AstArtemisia ludoviciana ssp. albulawhite mugwort1 
28AstArtemisia ludoviciana ssp. ludovicianasilver wormwood 2
29AstBaccharis brachyphyllashort-leaved baccharis 1
30AstBaccharis salicifolia ssp. salicifoliamule fat216
31AstBaccharis sergiloidesdesert baccharis13
32AstBahiopsis parishiiParish's goldeneye499
33AstBaileya pauciradiataColorado Desert marigold1 
34AstBebbia juncea var. asperasweetbush599
35AstBrickellia desertorumdesert brickellia 10
36AstBrickellia frutescensshrubby brickellia1 
37AstChaenactis artemisiifoliameally white pincushion120
38AstChaenactis carphoclinia var. carphocliniapebble pincushion 60
39AstChaenactis fremontiiFremont pincushion699
40AstChaenactis stevioidesdesert pincushion1 
41AstDicoria canescensdesert dicoria x
42AstDimorphotheca sinuata*African daisy 1
43AstEncelia farinosabrittlebush799
44AstEricameria brachylepisboundary goldenbush17
45AstErigeron canadensishorseweed112
46AstEriophyllum confertiflorum var. confertiflorumgolden yarrow1 
47AstEriophyllum wallaceiWallace's woolly daisy 1
48AstGnaphalium palustrewestern marsh cudweed 1
49AstGutierrezia sarothraematchweed 40
50AstIsocoma acradenia var. eremophilasolitary-leaved alkali goldenbush110
51AstLactuca serriola*prickly lettuce x
52AstLogfia depressadwarf filago 20
53AstLogfia filaginoidesCalifornia filago199
54AstMalacothrix glabratadesert dandelion450
55AstMalacothrix stebbinsiiStebbins' malacothrix1 
56AstMonoptilon bellioidesdesert star4 
57AstOncosiphon piluliferum*clustered chamomile1 
58AstPalafoxia arida var. aridaSpanish needle2 
59AstPectis papposa var. papposachinch-weed 20
60AstPerityle emoryiEmory's rock-daisy899
61AstPleurocoronis plurisetaarrow-leaf650
62AstPluchea sericeaarrow-weed299
63AstPseudognaphalium biolettiibicolored everlasting1 
64AstPseudognaphalium luteoalbum*common cudweed118
65AstPseudognaphalium stramineumcotton-batting plant x
66AstRafinesquia neomexicanadesert chicory557
67AstSenecio mohavensisMojave ragwort 99
68AstSolidago velutina ssp. californicagoldenrod230
69AstSonchus asper ssp. asper*prickly sow thistle 1
70AstSonchus oleraceus*sow thistle 9
71AstStephanomeria exigua ssp. exiguaslender wreathplant2 
72AstStephanomeria pauciflorawire-lettuce154
73AstStylocline micropoidesdesert nest straw x?
74AstTrichoptilium incisumyellow-head1 
75AstTrixis californica var. californicaCalifornia trixis895
76AstUropappus lindleyisilver puffs 5
77BetAlnus rhombifoliawhite alder3 
78BigChilopsis linearis ssp. arcuatadesert-willow827
79BorAmsinckia intermediacommon fiddleneck999
80BorAmsinckia tessellata var. tessellatabristly fiddleneck2 
81BorCryptantha angustifolianarrow-leaved cryptantha2 
82BorCryptantha barbigera var. barbigerabearded cryptantha399
83BorCryptantha intermedia var. intermediapopcorn flower 99
84BorCryptantha maritimaGuadalupe cryptantha 5
85BorCryptantha micrantha var. micranthared-root cryptantha110
86BorCryptantha muricataprickly cryptantha110
87BorCryptantha racemosabushy cryptantha 1
88BorEmmenanthe penduliflora var. penduliflorawhispering bells699
89BorEriodictyon trichocalyx var. lanatumsmoothleaf yerba santa426
90BorEucrypta chrysanthemifolia var. bipinnatifidaeucrypta120
91BorNama demissa var. demissapurple mat4x
92BorPectocarya recurvatacurvenut combseed299
93BorPhacelia affinislimestone phacelia x
94BorPhacelia brachylobashort-lobed phacelia x
95BorPhacelia campanularia ssp. campanulariadesert bluebells 30
96BorPhacelia cicutaria var. hispidacaterpillar phacelia450
97BorPhacelia crenulata var. ambiguaheliotrope phacelia11
98BorPhacelia crenulata var. minutifloralittle-flowered heliotrope phacelia1 
99BorPhacelia cryptanthalimestone phacelia1 
100BorPhacelia distanscommon phacelia999
101BorPhacelia minorwild canterbury bells299
102BorPhacelia pedicellatapedicellate phacelia5 
103BorPhacelia ramosissimabranching phacelia12
104BorPholistoma membranaceumwhite fiesta flower599
105BraBoechera perennansperennial rock-cress1 
106BraBrassica tournefortii*Sahara mustard299
107BraCapsella bursa-pastoris*shepherd's purse1 
108BraCaulanthus halliiHall's caulanthus13
109BraCaulanthus heterophyllus var. heterophyllusSan Diego jewelflower x
110BraCaulanthus lasiophyllusCalifornia mustard130
111BraCaulanthus simulansPayson's wild cabbage 1
112BraDescurainia pinnatawestern tansy-mustard799
113BraDithyrea californicaspectacle-pod1 
114BraDraba cuneifoliawedge-leaved draba4 
115BraLepidium lasiocarpum ssp. lasiocarpumhairy-podded pepper-grass399
116BraLyrocarpa coulteriCoulter's lyrepod 3
117BraNasturtium officinalewater cress199
118BraSisymbrium altissimum*tumble-mustard1 
119BraSisymbrium irio*London rocket299
120BraSisymbrium orientale*Oriental mustard199
121BraStreptanthella longirostrislongbeak streptanthella2 
122BraThysanocarpus curvipesfringe-pod130
123BraThysanocarpus laciniatuslace-pod1 
124CacCylindropuntia bigeloviiteddy-bear cholla 30
125CacCylindropuntia ganderiGander's cholla199
126CacEchinocereus engelmanniiEngelmann's hedgehog cactus 25
127CacFerocactus cylindraceusCalifornia barrel cactus299
128CacMammillaria dioicaCalifornia fish-hook cactus135
129CacOpuntia basilaris var. basilarisbeavertail cactus 99
130CamNemacladus glanduliferusglandular nemacladus4x
131CamNemacladus rubescensdesert nemacladus2 
132CarAchyronychia cooperifrost mat22
133CarCerastium glomeratum*mouse-ear chickweed x
134CarLoeflingia squarrosaspreading loeflingia2x
135CarSilene antirrhinasnapdragon campion120
136CheAtriplex polycarpacattle saltbush 5
137CheChenopodium album*white goosefoot 1
138CheChenopodium murale*nettle-leaved goosefoot150
139ConCuscuta californica var. californicaCalifornia dodder1 
140CraCrassula connatapygmy-weed 99
141CraDudleya saxosa ssp. aloidesdesert dudleya135
142CroCrossosoma bigeloviirock crossosoma475
143CucCucurbita palmatacoyote melon1 
144DatDatisca glomerataDurango root12
145EupBernardia incanawestern bernardia2 
146EupChamaesyce arizonicaArizona spurge230
147EupChamaesyce melanadeniared-gland spurge1 
148EupChamaesyce micromeraSonoran spurge 3
149EupChamaesyce polycarpasmall-seeded spurge456
150EupChamaesyce setilobastarfish (Yuma) spurge 20
151EupDitaxis lanceolatanarrowleaf ditaxis999
152EupEuphorbia erianthabeetle spurge320
153FabAcmispon argophyllus var. argophyllussouthern California silver-lotus 5
154FabAcmispon glaber var. brevialatusshort-winged deerweed145
155FabAcmispon haydoniipygmy lotus3 
156FabAcmispon heermannii var. heermanniisilky lotus1 
157FabAcmispon maritimus var. brevivexillusshort-bannered coastal lotus 10
158FabAcmispon micranthusSan Diego birdsfoot lotus299
159FabAcmispon rigidusdesert lotus13
160FabAcmispon strigosusstrigose lotus250
161FabAmorpha fruticosawestern false-indigo4 
162FabAstragalus nuttallianus var. cedrosensisCedros milk-vetch 10
163FabAstragalus palmeriPalmer's milk-vetch21
164FabDalea mollissimadowny dalea1 
165FabLupinus arizonicusArizona lupine1x
166FabLupinus concinnusbajada lupine512
167FabLupinus sparsiflorusCoulter's lupine199
168FabMedicago lupulina*black medick1 
169FabMedicago polymorpha*California burclover 10
170FabMelilotus albus*white sweetclover1x
171FabMelilotus indicus*sourclover230
172FabOlneya tesotaironwood 5
173FabProsopis glandulosa var. torreyanahoney mesquite399
174FabPsorothamnus schottiiindigo bush920
175FabSenegalia greggiicatclaw299
176FabTrifolium willdenoviitomcat clover x
177FouFouquieria splendens ssp. splendensocotillo199
178GerErodium cicutarium*redstem filaree 99
179GerErodium texanumTexas filaree 50
180KraKrameria bicolorwhite rhatany52
181KraKrameria erectaPima rhatany499
182LamHyptis emoryidesert-lavender999
183LamSalvia apianawhite sage21
184LamSalvia columbariaechia299
185LamSalvia eremostachyadesert sage21
186LamSalvia vaseyiVasey's sage911
187LamStachys ajugoides var. rigidarigid hedge-nettle1x
188LoaMentzelia desertorumdesert blazing star1 
189LoaMentzelia involucratabracted blazing star1 
190LytLythrum californicumCalifornia loosestrife 22
191MalAyenia compactaayenia88
192MalHibiscus denudatusrock hibiscus999
193MalHorsfordia newberryiNewberry's velvet mallow774
194MalMalacothamnus aboriginumIndian Valley bush mallow1 
195MalSphaeralcea ambiguaapricot mallow3 
196MalSphaeralcea ambigua var. ambiguaapricot mallow499
197MalSphaeralcea ambigua var. rosacearosy apricot mallow3 
198MolMollugo cerviana*carpet-weed1 
199MonCalandrinia ciliatared maids 1
200MonCalyptridium monandrumsand cress599
201MonClaytonia parviflora ssp. parvifloranarrow-leaved miner's lettuce 5
202MonClaytonia parviflora ssp. viridisgreen miner's lettuce 10
203MonClaytonia perfoliata ssp. perfoliataminer's lettuce 1
204NycAllionia incarnatatrailing four o'clock 50
205NycBoerhavia coccineascarlet spiderling62
206NycBoerhavia triquetra var. intermediafivewing spiderling199
207NycMirabilis laevis var. retrorsaBigelow's desert four-o'clock173
208NycMirabilis tenuilobaslender-lobed four o'clock461
209OnaCamissonia strigulosastrigose suncup x
210OnaCamissoniopsis pallida ssp. pallidapale suncup650
211OnaChylismia claviformis ssp. peirsoniibrown-eyed primrose499
212OnaEpilobium canum ssp. latifoliummountain California-fuchsia299
213OnaEpilobium ciliatum ssp. ciliatumwillowherb 20
214OnaEremothera boothii ssp. condensataBooth's evening primrose3 
215OnaEulobus californicusCalifornia suncup399
216OnaOenothera elata ssp. hirsutissimaHooker's evening-primrose 81
217OroCastilleja minor ssp. spiralislesser paintbrush1 
218PapArgemone munitaprickly poppy23
219PapEschscholzia minutiflora ssp. minutiflorasmall-flowered poppy440
220PapEschscholzia parishiiParish's poppy440
221PhrMimulus aurantiacus var. pubescenslong-flowered bush monkeyflower1 
222PhrMimulus bigelovii var. bigeloviiBigelow's monkeyflower699
223PhrMimulus cardinalisscarlet monkeyflower x
224PhrMimulus floribundusfloriferous monkeyflower 1
225PhrMimulus guttatuscommon monkeyflower16
226PlaAntirrhinum coulterianumCoulter's snapdragon 5
227PlaAntirrhinum filipesdesert twining snapdragon11
228PlaCollinsia concolorsouthern Chinese houses x
229PlaKeckiella antirrhinoides var. microphyllalittle-leaved chaparral beardtongue3 
230PlaLinaria bipartita*split-lip toadflax1 
231PlaMohavea confertifloraghost flower3 
232PlaPenstemon clevelandii var. clevelandiiCleveland's beardtongue15
233PlaPlantago ovatadesert plantain 99
234PlaVeronica anagallis-aquatica*water speedwell15
235PlaPlatanus racemosawestern sycamore45
236PolEriastrum diffusumminiature woolly-star1 
237PolEriastrum eremicum ssp. eremicumdesert woolly-star3 
238PolGilia capitata ssp. abrotanifoliaglobe gilia11
239PolGilia ochroleuca ssp. exilisvolcanic gilia 5
240PolGilia stellatastar gilia730
241PolLangloisia setosissima ssp. setosissimabristly langloisia1 
242PolLeptosiphon floribundus ssp. glabersummer snow1 
243PolLoeseliastrum matthewsiidesert calico3 
244PolLoeseliastrum schottiiSchott's calico4 
245PolSaltugilia australissouthern gilia 10
246PolChorizanthe brevicornu var. brevicornubrittle spineflower210
247PolChorizanthe fimbriata var. laciniatalace-fringed spineflower 1
248PolChorizanthe rigidadevil's spineflower x
249PolEriogonum fasciculatum var. polifoliumCalifornia buckwheat117
250PolEriogonum inflatumdesert trumpet340
251PolEriogonum reniformekidney-leaf buckwheat1 
252PolEriogonum thomasiiThomas' buckwheat3 
253PolEriogonum wrightii var. nodosumWright's buckwheat 85
254PolPterostegia drymarioidesfairy bowties, threadstem199
255PolRumex conglomeratus*whorled dock 6
256RanDelphinium parishii ssp. subglobosumintermediate larkspur625
257RhaZiziphus parryi var. parryilotebush 35
258RosDrymocallis glandulosasticky cinquefoil x?
259RosPrunus fremontiidesert apricot130
260RubGalium angustifolium ssp. borregoenseBorrego bedstraw4 
261RubGalium aparinecommon bedstraw x
262RubGalium stellatumstar-flowered bedstraw765
263SalPopulus fremontii ssp. fremontiiFremont cottonwood 11
264SalSalix exigua var. exiguanarrowleaf willow 62
265SalSalix laevigatared willow 2
266SimSimmondsia chinensisjojoba175
267SolDatura discolordesert thornapple240
268SolDatura wrightiisacred datura217
269SolLycium andersoniiAnderson's boxthorn 99
270SolNicotiana obtusifoliadesert tobacco644
271SolPhysalis crassifoliathick-leaved ground cherry210
272SolSolanum douglasiiwhite nightshade31
273TamTamarix sp.*tamarisk 5
274UrtParietaria hespera var. hesperapellitory499
275UrtUrtica dioica ssp. holosericeastinging nettle 10
276VisPhoradendron californicumdesert mistletoe447
277VitVitis girdianawild grape1 
278ZygFagonia laevisCalifornia fagonia121
279ZygKallstroemia californicaCalifornia caltrop1 
280ZygLarrea tridentatacreosote bush199
281ZygTribulus terrestris*puncture-vine1 
282AgaAgave deserti var. desertidesert agave 99
283AgaHesperoyucca whippleichaparral yucca 5
284AllAllium haematochitonred-skinned onion3 
285AraLemna minutaduckweed 99
286AreWashingtonia filiferaCalifornia fan palm799
287CypEleocharis parishiiParish's spikerush150
288CypSchoenoplectus acutus var. occidentaliscommon tule15
289CypSchoenoplectus americanusAmerican tule 99
290JunJuncus mexicanusMexican rush 99
291JunJuncus rugulosuswrinkled rush 20
292JunJuncus xiphioidesiris-leaved rush141
293OrcEpipactis giganteastream orchid1 
294PoaAristida adscensionissix-weeks three-awn230
295PoaAristida purpurea var. nealleyiNealley three-awn1 
296PoaAristida ternipes var. gentilishook three-awn1 
297PoaAvena barbata*slender wild oats16
298PoaBothriochloa barbinodiscane bluestem12
299PoaBouteloua aristidoides var. aristidoidesneedle grama 30
300PoaBouteloua barbata var. barbatasix-weeks grama1 
301PoaBromus carinatus var. carinatusCalifornia brome 10
302PoaBromus diandrus*ripgut brome 30
303PoaBromus madritensis ssp. rubens*red brome299
304PoaBromus tectorum*downy brome 20
305PoaCynodon dactylon*Bermuda grass 5
306PoaDistichlis spicatasaltgrass 11
307PoaFestuca bromoides*brome fescue x
308PoaFestuca myuros*rattail fescue15
309PoaFestuca octoflorahairy six-weeks fescue 10
310PoaHilaria rigidabig galleta399
311PoaHordeum murinum*foxtail barley x
312PoaMelica frutescenstall melica 16
313PoaMuhlenbergia microspermalittleseed muhly1 
314PoaMuhlenbergia rigensdeergrass13
315PoaPennisetum setaceum*fountain grass299
316PoaPhragmites australiscommon reed 10
317PoaPoa bigeloviiBigelow's blue grass 1
318PoaPolypogon interruptus*ditch beard grass1 
319PoaPolypogon monspeliensis*rabbits-foot grass228
320PoaPolypogon viridis*green bentgrass 10
321PoaSchismus barbatus*Mediterranean schismus199
322TheDichelostemma capitatum ssp. capitatumblue dicks1 
323TheMuilla maritimamuilla 10
324TypTypha domingensissouthern cattail 70

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Copyright © 2008-2016 by Tom Chester
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Last update: 21 January 2016