28 CRUCIFERAE 



zontal; calyx at first deep purple, becoming white, glabrous or nearly so; petals 

 wliite or purplish-tinged, little exserted; stamens exserted a little; pods 2 to 4^4 

 inches long, ascending or erect. 



Dry plains and hills, 100 to 3500 feet: iMohave l^esert, north over the upper 

 San Joaquin Valley and through the Inner South Coast Range to western Fresno 

 Co. Mar.-May. 



Note on the flower. — Tlie sepals are strongly keeled in such a way as to make the young buds 

 markedly -i-sided. The petal limbs are very narrow and very undulate on both sides of the 

 median band ; they are only slightly exserted and spread rotately. The septum of the pod is often 

 somewhat corky. 



Field note. — In years of scanty rainfall in the desert the plants more often occur in the richer 

 sandy spots on the mesas and thus form small colonics (3 to 8 feet in diameter) to the leeward 

 of a bush of Larrea or similar shrub. Or yet again, especially in seasons of higher rainfall, they 

 may dominate an area half a mile or a mile square, forming a very dense stand (the plants 6 

 inches to a foot apart) and distributed without reference to the woody growth. Even in luxuriant 

 colonies the stems are as frequently simple as few-branched, so that the assemblage has a very dis- 

 tinctive aspect. In the Inner South Coast Eange this species is also found in colonies of restricted 

 area (% to 2 or 3 acres), the colonies scattered at very wide intervals. 



The tender and succulent leaves of the plant are gathered by desert miners and prospectors 

 who cook them for "greens" and make a dish which is esteemed more delicate than spinach. In 

 the Inner South Coast Range the herbage is similarly valued by settlers. 



Logs. — Mohave Desert: Coolgardie Yucca Mesa, Jepson 6632, 6700; Stoddard's Well, Jepson 

 5904; Kramer, Jepson 15,448; Barstow, Jepson 5396; Randsburg, Kern Co., Heller 7702; Lan- 

 caster, Davidson; Rosamond, Davy 2272. Upper San Joaquin Valley: Bakersfield, Eastwood; 

 Sunset, Kern Co., Heller 7724. Inner South Coast Range : Elkhorn Scarp, Temblor Range, Jepson 

 16,224; Zapato Chino Creek, sw. Fresno Co., Jepson 15,388; San Carlos Creek, w. Fresno Co., 

 Jepson 2741. 



Refs. — Streptanthus inflatus Greene, Fl. Fr. 257 (1891) ; Jepson, Man. 416, fig. 407 

 (1925). Caulanthus inflatus Wats. Proc. Am. Acad. 17:364 (1882), type loe. Mohave Desert, 

 Lemmon, Parish Bros. 



12. S. campestris Wats. Stems one or few from the crown of a perennial 

 root, mostly simple, IV^ to 4 feet high; blades of basal leaves oblong, irregularly 

 dentate or denticulate towards the apex (the teeth setose-tipped), contracted at 

 base to a winged petiole, the whole 5 to 7 inches long; upper leaves oblong to lanceo- 

 late, auriculate-clasping ; flowers darkish purple, rarely yellowish, 4 to 5 lines long ; 

 sepals bristle-tipped; pods spreading and curved, 3 to 6 inches long, 1 line broad; 

 style short, stout; stigma shortly 2-lobed; seeds winged. 



Stony mountain slopes, 3000 to 7400 feet : San Bernardino Mts. to the Cuya- 

 maca Mts. and south borders of San Diego Co. May-June. 



Loes. — Bluff Lake, San Bernardino Mts., Hall; Santa Rosa Indian Village, Santa Rosa Mts., 

 Jepson 1443; Campo, Abrams 3614. 



Var. bemardinus Jtn. Blades of basal leaves thickish, spatulate-obovate, contracted to a 

 short petiole, 1 to 1% inches long, entire; flowers pale white, 3 lines long. — Mountain slopes or 

 open forest, 5000 to 6500 feet: San Bernardino Mts. (Bear Valley, Parish 3035) and San Jacinto 

 Mts. (Pine Cove, C. V. Meyer 147) to the Cuyamaca Mts. (Abrams 3874). 



Var. jacobaeus Jepson comb. n. Pedicels 1 to 2 lines long; flowers whitish, sometimes purp- 

 lish; sepals 2 to nearly 3 lines wide. — Laguna Mts., Peirson 4837; Julian to Banner, Hall; Cuya- 

 maca Mts. 



Refs. — Streptanthus campestris Wats. Proc. Am. Acad. 25:125 (1890), type loc. Campo, 

 G. B. Vasey # S. B. Parish; Gray, Syn. Fl. 1^:169 (1895) ; Jepson, Man. 417 (1925). Var. 

 BERNARDINTJS Jtn. PI. World 22:89 (1919). Agianthus bemardinus Greene, Lflts. 1:228 (1906), 

 type loc. San Bernardino Mts., Parish. Var. jacobaeus Jepson. Agianthus jacobaeus Greene, 

 I.e. 229, type loc. Cuyamaca Mts., Orcutt 1507. 



13. S. barbatus Wats. Stems simple, few or several from a perennial root- 

 crown, ascending or horizontally spreading, 1 to 2 feet high; leaf -blades cordate, 

 sessile and clasping, obtuse, all similar and nearly equal, crowded, 5 to 9 lines long; 

 flowers purple, 3 to 4 lines long; sepals obtusish, setosely bearded near the apex; 

 pods spreading, curved, II/4 to 2 inches long, 1 line wide; pedicels 1 line long; 

 stigmas sessile or nearly so ; seeds roundish, narrowly margined. 



