20 CRUCIFERAE 



longr, the claw woolly-pubescent, as long or lonj^er tlian blade, and dilated down- 

 wards; filaments pnbenilent toward base; pods V/y to 2V2 inches long, a line wide, 

 spreading, curved like a sickle; stipe 5 to 10 lines long. 



Dry plains and foothills, 1000 to 4500 feet: Mohave Desert, west to Santa liar- 

 bara Co., north to the upper San Joaquin Valley and Inyo Co. East to Nebraska 

 and Texas. May-June. 



Field note. — Keniarkably capparidaceous in habit and in certain points of flower structure, 

 this plant is a very interesting species phylogenetically. It is not uncommon in certain localities 

 in the Mohave Desert. We are now trailing in a southerly direction over a pass at the west end 

 of Ord Mt. and find a dry lake bed, the lower part of it occupied by Atriplex canescens Nutt. 

 About five acres of the bed are in high color, filled with handsome round many-stemmed plants of 

 Stanleva pinnata four to six feet high, the finest wo have yet seen. — Jepson Field Book, vol. 

 30: p. 79 (1914), ms. 



Biol. note. — The tops of the shrubs are winter-killed and only the basal 1 or 2 feet are truly 

 woody. The leaf buds are wholly lateral, develop rosettes which burst in February, and are 

 borne almost exclusively on the lower portion of the simple slender flowering shoots of the pre- 

 vious season, and only to a slight degree on older wood. A trunk stem from the Calico Wash 

 north of Daggett (Jepson 6597) is 1% inches in diameter and ten years old. Some of the cap- 

 sules dehisce tardUy throughout the winter. — Jepson Field Book, vol. 32: p. 44 (191G), ms. 



Locs. — Santa Maria, Ida Blochman : Cuyama Valley, Jepson 12,162 ; Soledad Canon, Los 

 Angeles Co., Barber 179; Eock Creek, Pcirson 292; Eabbit Sprs., S. B. ^ W. F. Parish 132; 

 Pleasant Valley, Hexie Mts., Clary 1491; Cottonwood Spr., ne. of Mecca, Jepson 12,560; Calico 

 Wash, n. of Daggett, Jepson 5384; Ord Mt., Jepson 5937; Summit sta., e. of Haloran Spr., e. 

 Mohave Desert, Jepson 15,810; Ash Creek, Owens Lake, Jepson 5129; Emigrant Caiion, Death 

 Valley, Jepson. 



Eefs.— Stanleya pinnata Britt. Trans. N. Y. Acad. Sci. 8:62 (1888) ; Gov. Contrib. U. S. 

 Nat. Herb. 4:64 (1893) ; Jepson, Man. 411 (1925). Cleome pinnata Pursh, Fl. 2:739 (1814), 

 tvpe loc. upper w. Mississippi Vallev, Bradbury. S. pinnatifida Nutt. Gen. 2:71 (1818), Missouri 

 Eiver, NuttaJl; B. & W. Bot. Cal. 1 :'38 (1876). 



2. S. data Jones. Panamint Plume. Stems solid, 2 to 6 feet high, scape- 

 like or branching toward the summit; leaf -blades lance-ovate, entire or divided at 

 base into a few lobes or w^ell-defined divisions, 4 to 10 inches long, as much as 3^ 

 inches broad, narrowed at base to a short petiole or in upper leaves petiole half as 

 long as blade; racemes 6 to 15 (or 24) inches long; sepals petal-like, broad-mem- 

 branous at base, slightly enlarged upwards to an oar-like blade 2 lines wide; petals 

 light yellow, about equaling the sepals but narrower and less conspicuous, blade 

 reduced, crisped; filaments short-hairy on the lower half; pods filiform, 3 to 4 

 inches long, 14 line in diameter. 



Washes of mesas and canons of desert ranges, 5000 to 6500 feet : Argus, Pana- 

 mint and White mountains, Inyo Co. Northerly to western Nevada. May-June. 



Locs. — Argus Mts., Jones; Inyo Mts., and betw. Darwin and Keeler (Contrib. U. S. Nat. 

 Herb. 4:64) ; betw. Wild Eose Cafion and Emigrant Wash, Panamint Mts., Ferris 7999; Black 

 Canon, White Mts., Duran 2693. 



Eefs. — STAN1.EYA ELATA Jones, Zoe 2:16 (1891), type loc. near Hawthorne, Mineral Co., 

 Nev., Jones; Jepson, Man. 411 (1925). 



Stanleya viridiflora Nutt. In the two preceding species the stem leaves are petioled and 

 the stamens twice or nearlv thrice the length of the petals. In S. viridiflora Nutt. (T. & G. Fl. 

 1:98,-1838, type loc. Ham's Fork, Colorado Eiver; Jones, Zoe: 3:283,-1893) the stem leaves 

 are clasping and the stamens not exceeding the petals. A form of it has been found near the 

 California boundary at Candelaria, Esmeralda Co., Nev. 



2. STREPTANTHUS Nutt. 



Annual herbs, or some biennial or perennial. Basal leaves commonly toothed 

 or pinnatifid, the cauline similar or entire, often sagittate-clasping. Calyx with 

 2 of the sepals or all saccate at base, the calyx thus ovoid or broad at base and con- 

 tracted above, or by the spreading of the tips becoming somewhat flask-shaped; 



