Flora of New Dixie Mine Road Area, west of Landers

All pictures taken 22 October 2010. The identifications are, clockwise from the top left: Pectis papposa, Chrysothamnus paniculatus, Senna armata, Krascheninnikovia lanata (fruit), Salazaria mexicana (fruit), Tetradymia stenolepis (fruit), Xylorhiza tortifolia, Salazaria mexicana, Amaranthus fimbriatus, Nicolletia occidentalis. For common names, see the checklist below.

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Introduction
Location
Fieldwork Results
Procedure For Compiling The Checklist
Important Caveats
Checklist

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Introduction

This area was of interest to us since it was one of the few areas that received enough summer rainfall in 2010 to produce a good fall bloom. Surprisingly, Thomas Stoughton found this area only in the course of other work; there was no indication from radar rainfall maps that this area received any significant summer rainfall.

We visited this area on 22 October 2010, and spent the day admiring the species in bloom, as well as compiling a list of the species we could identify. We compiled a voucher list the day before, so we could have a working list when we botanized this area. We were fortunate that Michael Honer had done a quite thorough job vouchering a number of species from this area in several trips in several seasons. He was the source of 255 of the 295 vouchers from this area.

See pictures from two different locations:

• View northeast from hillside above New Dixie Mine Road about 1.0 miles from SR247

• View southeast from hillside above New Dixie Mine Road about 1.0 miles from SR247

• View west from New Dixie Mine Road 1.5 miles from SR247

Location

The New Dixie Mine Road is just west of the town of Landers in the Mojave Desert about 11 miles north of the northwest corner of Joshua Tree National Park. The area surveyed is where the east slopes of the San Bernardino Mountains meet the Mojave Desert in this area, at an elevation of about 4000 feet.

The location of the area searched for vouchers is shown as the rectangle plotted in the following large-area map:

The area searched for vouchers is shown in more detail on the following map, which plots voucher locations as blue diamonds:

Some vouchers are outside the nominal search area since the Consortium rounds all coordinates to two decimal places in a coordinate search. Since voucher coordinates are often not terribly accurate, we kept all the vouchers returned from that search.

The paths we surveyed are shown in more detail below as the blue lines that originate in three different areas along the New Dixie Mine Road:

Fieldwork Results

We found 95 taxa that could be identified well enough to list below. This is a pretty amazing number, since, for example, we found just two more taxa, a total of 97, from two days of surveys in the prime time of February 2008 at Red Butte Wash / Carey's Wash / Hayfield Area in Joshua Tree National Park. That area had also received summer or fall rainfall to get its bloom going early.

Of those 95 taxa, 73 were found on the voucher list, and 22 are additional taxa not yet vouchered.

Several of the taxa could not normally have been identified to species, since they were not in bloom. However, given the relatively complete voucher checklist, when we could, we assigned those to the most likely species from the voucher list, with appropriate qualifications on the determination given in the checklist below when necessary.

Amazingly, 41 of the 95 species had at least one plant in bloom. The taxa found in bloom is given in the checklist below, along with the number of plants observed to be in bloom for each taxon.

Procedure For Compiling The Checklist

We searched the Consortium of California Herbaria on 21 October 2010 for vouchers within these limits: 34.24° and 34.31° N. Latitude, and 116.58° to 116.38° W. Longitude. That returned a total of 295 vouchers, representing 180 taxa after all names were changed to those in the 1993 Jepson Manual system.

Adding the 95 taxa from our survey resulted in a total of 202 taxa in the following checklist.

Important Caveats

Please note the following important caveats about this preliminary Checklist:

• We have not looked at any of the vouchers, so we cannot vouch for their determinations. We have checked only the names of the taxa to make sure it was not unreasonable for them to occur here.

• This is a very preliminary first draft Checklist, compiled quickly and without review by other knowledgeable botanists, and so well may contain bonehead errors.

Checklist for New Dixie Mine Road Area

This is a preliminary, working list of the flora of this area, compiled from a single survey done on 22 October 2010, with some observations from an earlier trip in 2010 by Thomas Stoughton, and vouchers from a geographic area search of Consortium of California Herbaria on 21 October 2010.

The Checklist is sorted first by category - ferns, dicots, and monocots - and then by family and scientific name. The JM Family and Scientific Name are from the 1993 first edition Jepson Manual. An asterisk before the Common Name indicates a non-native taxon.

The column ID? applies only to the plants from our survey. See explanation of entries in that column.

Two columns are given under # Plants. The column Bloom / 22Oct10 gives the number of plants observed to be in bloom in our survey on that day. The column Obs'd gives the minimum number of plants we observed, blooming and not, on that survey, up to a maximum number given of 99.

The # Vouchers column gives the total number of vouchers found in the entire study area.

This is a working list, about which we make no guarantees at all. Use at your own risk!

Version for printing, without lines and 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)

#	JM Family	ID?	Scientific Name	(*)Common Name	# Plants		#Vouchers
					Bloom 22Oct10	Obs'd
1	Pteridaceae		Cheilanthes covillei	beady lipfern		1
2	Pteridaceae	~	Pentagramma triangularis ssp. triangularis	goldback fern		1
3	Cupressaceae		Juniperus californica	California juniper			1
4	Ephedraceae		Ephedra californica	desert tea		30	1
5	Ephedraceae		Ephedra nevadensis	Nevada ephedra			3
6	Ephedraceae		Ephedra viridis	green ephedra			1
7	Pinaceae		Pinus monophylla	pinyon pine			2
8	Amaranthaceae		Amaranthus fimbriatus	fringed amaranth	99	99	11
9	Apiaceae		Lomatium mohavense	Mojave lomatium			1
10	Asteraceae	~	Acamptopappus sphaerocephalus var. sphaerocephalus	goldenhead		5	3
11	Asteraceae		Adenophyllum cooperi	Cooper's dogweed	5	20	2
12	Asteraceae		Ambrosia acanthicarpa	bur-ragweed			1
13	Asteraceae		Ambrosia dumosa	burroweed	5	99	12
14	Asteraceae		Anisocoma acaulis	scale-bud			3
15	Asteraceae		Artemisia dracunculus	wild tarragon			2
16	Asteraceae		Baccharis brachyphylla	short-leaved baccharis	1	1
17	Asteraceae		Baccharis salicifolia	mule fat			2
18	Asteraceae		Baccharis sergiloides	desert baccharis			3
19	Asteraceae		Baileya pleniradiata	woolly marigold			2
20	Asteraceae		Bebbia juncea var. aspera	sweetbush	10	30
21	Asteraceae		Brickellia arguta var. arguta	California spear-leaved brickellia	5	20
22	Asteraceae		Brickellia desertorum	desert brickellia	1	2	3
23	Asteraceae		Calycoseris parryi	yellow tackstem			2
24	Asteraceae		Chaenactis fremontii	Fremont pincushion			2
25	Asteraceae	~	Chaenactis stevioides	desert pincushion		10	5
26	Asteraceae		Chrysothamnus nauseosus ssp. mohavensis	Mohave common rabbitbrush			1
27	Asteraceae		Chrysothamnus paniculatus	blackbanded rabbitbrush	99	99
28	Asteraceae		Chrysothamnus teretifolius	needle-leaved rabbitbrush	40	50	4
29	Asteraceae		Coreopsis bigelovii	Bigelow's coreopsis			1
30	Asteraceae		Encelia actoni	Acton encelia	10	10	11
31	Asteraceae		Ericameria cooperi var. cooperi	Cooper's goldenbush			1
32	Asteraceae		Ericameria cuneata var. spathulata	wide-leaved rock goldenbush	10	10	3
33	Asteraceae		Ericameria linearifolia	narrowleaf goldenbush			2
34	Asteraceae		Eriophyllum confertiflorum var. confertiflorum	golden yarrow			2
35	Asteraceae		Eriophyllum wallacei	Wallace's woolly daisy			1
36	Asteraceae		Filago californica	California filago			1
37	Asteraceae		Gnaphalium stramineum	cotton-batting plant			1
38	Asteraceae		Gutierrezia microcephala	sticky snakeweed		20	2
39	Asteraceae		Gutierrezia sarothrae	matchweed			1
40	Asteraceae		Hymenoclea salsola var. salsola	cheesebush		50	2
41	Asteraceae		Layia glandulosa	white tidy-tips			1
42	Asteraceae		Malacothrix glabrata	desert dandelion			2
43	Asteraceae		Nicolletia occidentalis	western nicolletia	2	2	1
44	Asteraceae		Palafoxia arida var. arida	desert needle			1
45	Asteraceae		Pectis papposa var. papposa	chinch-weed	99	99	11
46	Asteraceae		Porophyllum gracile	odora	2	20
47	Asteraceae		Senecio flaccidus var. monoensis	Mono ragwort	2	2
48	Asteraceae		Sonchus asper ssp. asper	*prickly sow thistle			1
49	Asteraceae		Stephanomeria exigua ssp. exigua	slender wreathplant	20	30	3
50	Asteraceae		Stephanomeria parryi	Parry's stephanomeria			1
51	Asteraceae		Stephanomeria pauciflora var. pauciflora	wire-lettuce	10	50	1
52	Asteraceae		Syntrichopappus fremontii	Fremont's syntrichopappus			1
53	Asteraceae		Tetradymia stenolepis	Mojave horsebrush		30	2
54	Asteraceae		Uropappus lindleyi	silver puffs			1
55	Asteraceae		Viguiera parishii	Parish's viguiera	40	99	12
56	Asteraceae		Xylorhiza tortifolia var. tortifolia	Mojave-aster	5	50	12
57	Bignoniaceae		Chilopsis linearis ssp. arcuata	desert-willow		50	2
58	Boraginaceae		Amsinckia tessellata var. tessellata	bristly fiddleneck			3
59	Boraginaceae		Cryptantha barbigera	bearded cryptantha			1
60	Boraginaceae		Cryptantha barbigera var. fergusoniae	Santa Rosa Mountain bearded cryptantha			1
61	Boraginaceae		Cryptantha micrantha	purple-root cryptantha			2
62	Boraginaceae		Cryptantha nevadensis	Nevada cryptantha			1
63	Boraginaceae		Cryptantha pterocarya	wing-nut cryptantha			1
64	Boraginaceae		Pectocarya penicillata	combseed			1
65	Boraginaceae		Pectocarya recurvata	curvenut combseed			1
66	Boraginaceae		Pectocarya setosa	moth combseed			2
67	Boraginaceae		Tiquilia plicata	plicate coldenia			1
68	Brassicaceae		Lepidium fremontii var. fremontii	desert pepper-grass		20	4
69	Brassicaceae		Lepidium lasiocarpum var. lasiocarpum	hairy-podded pepper-grass			1
70	Brassicaceae	~	Sisymbrium orientale	*Oriental mustard		1	1
71	Brassicaceae		Stanleya pinnata var. pinnata	prince's plume			1
72	Brassicaceae		Thysanocarpus curvipes	fringe-pod			2
73	Cactaceae		Echinocactus polycephalus var. polycephalus	cottontop cactus		30	1
74	Cactaceae		Echinocereus engelmannii	Engelmann's hedgehog cactus		30	1
75	Cactaceae		Opuntia basilaris var. basilaris	beavertail cactus		30	1
76	Cactaceae		Opuntia echinocarpa	silver cholla		20	1
77	Cactaceae		Opuntia ramosissima	pencil cholla		10
78	Capparaceae		Isomeris arborea	bladderpod	1	5	1
79	Caryophyllaceae		Arenaria macradenia var. macradenia	desert sandwort			1
80	Caryophyllaceae		Silene antirrhina	snapdragon campion			2
81	Chenopodiaceae		Atriplex canescens ssp. canescens	four-wing saltbush		5	1
82	Chenopodiaceae		Grayia spinosa	hop-sage			2
83	Chenopodiaceae		Krascheninnikovia lanata	winter fat		20
84	Crassulaceae		Dudleya saxosa ssp. aloides	desert dudleya			2
85	Cucurbitaceae		Cucurbita palmata	coyote melon		2
86	Euphorbiaceae		Chamaesyce albomarginata	rattlesnake weed	30	30	2
87	Euphorbiaceae		Chamaesyce micromera	Sonoran spurge	50	50
88	Euphorbiaceae		Chamaesyce serpyllifolia	thyme-leafed spurge			1
89	Euphorbiaceae		Chamaesyce setiloba	Yuma spurge	99	99	2
90	Euphorbiaceae		Croton californicus	California croton			1
91	Euphorbiaceae		Stillingia linearifolia	linear-leaved stillingia		99	1
92	Fabaceae		Acacia greggii	catclaw		99
93	Fabaceae		Astragalus douglasii var. douglasii	Jacumba milk-vetch			2
94	Fabaceae		Caesalpinia gilliesii	*bird-of-paradise		4
95	Fabaceae		Lotus heermannii	silky lotus			1
96	Fabaceae		Lotus procumbens var. procumbens	silky California broom			2
97	Fabaceae		Lotus rigidus	desert lotus			1
98	Fabaceae		Lotus salsuginosus var. brevivexillus	short-bannered coastal lotus			1
99	Fabaceae		Lotus strigosus	strigose lotus			1
100	Fabaceae		Lupinus concinnus	bajada lupine			2
101	Fabaceae	?	Lupinus sparsiflorus	Coulter's lupine		20	1
102	Fabaceae		Psorothamnus arborescens var. simplicifolius	California indigo-bush	1	99	3
103	Fabaceae		Senna armata	spiny senna	5	99	12
104	Fagaceae		Quercus cornelius-mulleri	desert scrub oak			4
105	Geraniaceae		Erodium cicutarium	*redstem filaree		99
106	Hydrophyllaceae		Emmenanthe penduliflora var. penduliflora	whispering bells			1
107	Hydrophyllaceae	~	Eucrypta chrysanthemifolia var. bipinnatifida	eucrypta		20	1
108	Hydrophyllaceae		Nama demissum var. demissum	purple mat			1
109	Hydrophyllaceae	~	Phacelia campanularia ssp. vasiformis	desert bluebells		5	2
110	Hydrophyllaceae		Phacelia cryptantha	limestone phacelia			1
111	Hydrophyllaceae		Phacelia distans	common phacelia	2	20	3
112	Hydrophyllaceae		Phacelia fremontii	Fremont's phacelia			1
113	Hydrophyllaceae		Phacelia lemmonii	Lemmon's phacelia			1
114	Krameriaceae		Krameria erecta	Pima rhatany			2
115	Krameriaceae		Krameria grayi	white rhatany	5	99	1
116	Lamiaceae		Salazaria mexicana	Mexican bladder sage	20	99	3
117	Lamiaceae		Salvia columbariae	chia		99	22
118	Lamiaceae		Salvia mohavensis	Mojave sage		30	2
119	Loasaceae		Mentzelia albicaulis	white-stemmed blazing star			1
120	Loasaceae		Mentzelia jonesii	Jones' blazing star			2
121	Loasaceae		Petalonyx thurberi ssp. thurberi	Thurber's sandpaper-plant		5
122	Malvaceae	ssp	Sphaeralcea ambigua	apricot mallow	5	50	10
123	Molluginaceae		Mollugo cerviana	*carpet-weed		30	10
124	Nyctaginaceae		Mirabilis bigelovii var. bigelovii	Bigelow's desert four-o'clock		3	2
125	Nyctaginaceae		Mirabilis bigelovii var. retrorsa	Bigelow's desert four-o'clock		50	1
126	Oleaceae		Forestiera pubescens	desert olive			1
127	Onagraceae	ssp	Camissonia boothii	Booth's evening primrose		20	1
128	Onagraceae		Camissonia californica	California suncup		50	1
129	Onagraceae		Camissonia campestris	field sun-cup			2
130	Onagraceae	ssp	Camissonia claviformis ssp. claviformis	brown-eyed primrose		30	21
131	Onagraceae		Camissonia pallida	pale-yellow sun-cup			1
132	Onagraceae		Epilobium canum	California fuchsia			2
133	Onagraceae		Epilobium canum ssp. latifolium	mountain California-fuchsia			1
134	Orobanchaceae		Orobanche parishii ssp. parishii	Parish's broom-rape			1
135	Papaveraceae		Eschscholzia minutiflora	small-flowered poppy			1
136	Polemoniaceae		Eriastrum eremicum ssp. eremicum	desert woolly-star		99	4
137	Polemoniaceae		Gilia cana ssp. bernardina	showy gilia			1
138	Polemoniaceae		Gilia stellata	star gilia			1
139	Polemoniaceae	~	Loeseliastrum matthewsii	desert calico		3	2
140	Polygonaceae		Centrostegia thurberi	Thurber's spineflower			1
141	Polygonaceae		Chorizanthe brevicornu var. brevicornu	brittle spineflower		2
142	Polygonaceae		Eriogonum davidsonii	Davidson's buckwheat	10	10	6
143	Polygonaceae		Eriogonum elongatum var. elongatum	long-stemmed buckwheat			5
144	Polygonaceae		Eriogonum fasciculatum var. polifolium	California buckwheat		40	2
145	Polygonaceae		Eriogonum inflatum	desert trumpet	10	50	1
146	Polygonaceae		Eriogonum maculatum	spotted buckwheat	20	40	1
147	Polygonaceae		Eriogonum nidularium	birdnest buckwheat	40	50	10
148	Polygonaceae		Eriogonum pusillum	yellow-turbans	1	6	1
149	Polygonaceae		Eriogonum wrightii var. nodosum	Wright's buckwheat			2
150	Polygonaceae		Eriogonum wrightii var. wrightii	Wright's buckwheat	20	20
151	Ranunculaceae		Delphinium parishii	Parish's larkspur		20	1
152	Rosaceae		Cercocarpus intricatus	little-leaved mountain-mahogany			1
153	Rosaceae		Coleogyne ramosissima	black brush		50	1
154	Rosaceae		Prunus fasciculata var. fasciculata	desert almond		20	1
155	Rosaceae		Purshia tridentata var. glandulosa	desert bitterbrush			2
156	Rubiaceae		Galium angustifolium ssp. gracillimum	slender bedstraw			2
157	Rubiaceae		Galium stellatum var. eremicum	star-flowered bedstraw		20
158	Salicaceae		Populus fremontii ssp. fremontii	Fremont cottonwood			2
159	Salicaceae		Salix exigua	narrowleaf willow			1
160	Salicaceae		Salix lasiolepis	arroyo willow			3
161	Scrophulariaceae		Castilleja angustifolia	northwestern paintbrush			1
162	Scrophulariaceae	ssp	Keckiella antirrhinoides var. microphylla	little-leaved chaparral beard-tongue		5	2
163	Scrophulariaceae		Mimulus aurantiacus	bush monkeyflower			2
164	Scrophulariaceae		Mimulus bigelovii var. bigelovii	Bigelow's monkeyflower			1
165	Scrophulariaceae		Mimulus guttatus	common monkeyflower			2
166	Scrophulariaceae		Mimulus parishii	Parish's monkeyflower			2
167	Scrophulariaceae		Mimulus pilosus	false monkeyflower			1
168	Solanaceae		Datura wrightii	sacred datura			2
169	Solanaceae	~	Lycium andersonii	Anderson's desert-thorn		30	1
170	Solanaceae	~	Lycium cooperi	Cooper's box-thorn		10	1
171	Solanaceae		Nicotiana obtusifolia	desert tobacco		1	2
172	Solanaceae		Physalis crassifolia	thick-leaved ground cherry	2	20	1
173	Viscaceae		Phoradendron californicum	desert mistletoe		20	2
174	Zygophyllaceae		Larrea tridentata	creosote bush	1	99	12
175	Juncaceae		Juncus bufonius var. bufonius	toad rush			2
176	Juncaceae		Juncus macrophyllus	long-leaved rush			1
177	Juncaceae		Juncus mexicanus	Mexican rush			2
178	Juncaceae		Juncus xiphioides	iris-leaved rush			2
179	Liliaceae		Allium lacunosum var. davisiae	Davis' pitted onion			1
180	Liliaceae		Calochortus kennedyi var. kennedyi	red mariposa		3	1
181	Liliaceae		Dichelostemma capitatum	blue dicks			1
182	Liliaceae		Dichelostemma capitatum ssp. pauciflorum	few-flowered blue dicks			1
183	Liliaceae		Yucca brevifolia	joshua tree		5
184	Liliaceae		Yucca schidigera	Mohave yucca		99	1
185	Poaceae	~	Achnatherum speciosum	desert needlegrass		20	2
186	Poaceae		Aristida adscensionis	six-weeks three-awn	50	99
187	Poaceae	ssp	Aristida purpurea var. nealleyi	Nealley three-awn	1	1	4
188	Poaceae		Bouteloua barbata var. barbata	six-weeks grama	20	50	10
189	Poaceae		Bromus madritensis ssp. rubens	*red brome		99	2
190	Poaceae		Bromus trinii	*Chilean chess			3
191	Poaceae		Distichlis spicata	saltgrass			1
192	Poaceae		Elymus elymoides ssp. elymoides	squirreltail			2
193	Poaceae		Erioneuron pulchellum	fluff grass		25
194	Poaceae		Hordeum vulgare var. trifurcatum	*cultivated barley			1
195	Poaceae		Melica frutescens	tall melica			2
196	Poaceae		Melica imperfecta	coast-range melic			3
197	Poaceae		Muhlenbergia rigens	deergrass			2
198	Poaceae		Pleuraphis rigida	big galleta	10	99	11
199	Poaceae		Poa secunda ssp. secunda	one-sided bluegrass			2
200	Poaceae		Polypogon monspeliensis	*rabbits-foot grass			1
201	Poaceae		Schismus barbatus	*Mediterranean schismus			3
202	Poaceae		Vulpia microstachys var. pauciflora	Pacific fescue			1

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Voucher data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/; Thu Oct 21 2010).

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