114 LEGUMINOS^E. Thermopsis. 



on a short glabrous stipe, 6-8-ovuled ; mature fruit not known. — Proc. Am. Acad. 

 xi. 126. T. macrophylla, Torr. in Pacif. E. Eep. iv. 81. T. fabacea, Torr. in Bot. 

 Mex. Bound. 58. 



From Marin and Napa counties southward. 



3. T. montana, Nutt. More glabrous, somewhat silky-villous especially above: 

 stipules ovate to lanceolate ; leaflets oblong-obovate to oblong, 1 to 3 inches long, 

 obtuse or acutish, sparingly villous beneath, smooth above : bracts mostly lanceo- 

 late : pod pubescent, on a rather slender stipe about equalling the calyx-tube, linear, 

 2 or 3 inches long, straight, erect, 10- 12-seeded. — Torr. & Gray, PI. i. 388. T. 

 fabacea, Hook. Fl. i. 128; Bot. Mag. t. 3611 ; Lindl. Bot. Peg. xv. t. 1272 ; not 

 DC. T. macrophylla, var. ft., Torr. & Gray, 1. c. T. fabacea, var. montana, Gray; 

 Watson, Bot. King Exp. 53. 



From Washington Territory and Oregon, in the mountains, through the interior to Colorado 

 and Mew Mexico ; prohably in Northern California. The typical form, more common eastward, 

 has narrowly oblong leaves. The T. fabacea of Eastern Asia, to which this species has been usu- 

 ally referred, has more spreading pods, with larger and broader more compressed seeds. The only 

 other western species is T. ehomeifolia, Richardson, confined to the Eocky Mountains, and dis- 

 tinguished by its recurved many-seeded pods. 



2. PICKEBINGIA, Nutt. 



Calyx campanulate, turbinate at base, repandly 4-toothed. Petals equal : standard 

 orbicular, the sides reflexed : wings oblong : keel-petals oblong, distinct, straight, 

 obtuse. Stamens distinct. Style slightly incurved : stigma minute. Pod membra- 

 naceous, linear, compressed, stipitate, several-seeded, straight. — A low stout much- 

 branched spinose shrub; leaves evergreen, small, nearly sessile, digitately 1-3-folio- 

 late, without stipules ; flowers large, purple, axillary, solitary, nearly sessile. 



1. P. montana, ISTutt. Widely spreading, densely branched, 4 to 7 feet high, 

 more or less silky-tomentose or glabrate, leafy, the branchlets becoming spinose : 

 leaflets oblanceolate or cuneate-oblong, 3 to 9 lines long, acute or obtuse : flowers 

 near the ends of the branchlets, -on very short minutely 2-bracteolate peduncles, 

 from light cinnamon-red to purple, 7 to 9 lines long : stamens persistent : pod about 

 two inches long, 6-10-seeded (or fewer by abortion), somewhat constricted between 

 the seeds, pubescent ; stipe exserted : seeds oblong, slightly compressed, dark-colored. 

 — Torr. & Gray, Fl. i. 389 ; Torr. Bot. Mex. Bound. 51, t. 14, & Bot. Wilkes Exp. 

 282. 



Frequent on dry hills from Lake' County to San Diego. The characters of the pod distinguish 

 the genus clearly from Anagyris. 



3. SOPHORA, Linn. 



Calyx-tube campanulate ; teeth short. Petals nearly equal : standard broad. 



Stamens distinct ; anthers uniform, versatile. Style incurved : stigma minute. Pod 



stipitate, terete or somewhat compressed, thick or coriaceous, mostly indehiscent, 



several-seeded, constricted between the obovoid or subglobose seeds and usually 



necklace-like. — Trees, shrubs, or herbs ; leaves unevenly pinnate, with few or many 



entire often coriaceous leaflets ; stipules small or obsolete ; racemes terminal. 



A genus of about 25 species, of the warmer regions of the globe. Two low herbaceous species 

 are found in Colorado and New Mexico, and 2 or 3 evergreen shrubs in Texas and Northeastern 

 Mexico, besides a similar West Indian species in Florida. The following is the only species occur- 

 ring near the limits of California. 



1 . S. Arizonica, Watson. An evergreen shrub, somewhat canescent with short 

 appressed silky hairs : leaflets 2 or 3 pairs, narrowly oblong, acutish, an inch long ; 



