J]^^- LEGUMINOS^. Thermolysis. 



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

 xi. 126. T. macrojjhi/lla, Torr. in Pacif. K. Kep. iv. 81. T. /abacea, Torr. in Bot. 

 Mex. Bound. 58. 



From Mai ill ami Napa counties southward. 



3. T. montana, Nutt. More yluhrous, soniewlmt silky-villous especially above: 

 stipules ovate tu 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-tnbe, linear, 

 2 or 3 inches long, straight, erect, 10- 12-seeded. — Torr. <k Gray, Fl. i. 388. T. 

 /abacea, Hook. Fl. i. 128; But. Mag. t. 3G11 ; Lindl. But. Beg. xv. t. 1272 ; nut 

 DC. 7'. macrophi/l/ii, var. /3., Turr. & Clray, 1. c. T. f abacea, var. montana, (Jray; 

 "Watson, But. King K.\p. OiJ. 



From WusliiiigUm 'I'ciiitoiy uiul Oregon, in thu iiiountiiiiiH, tlirougli tlio interior to Colimiilo 

 and New Mexi('o ; i)iol)al)ly in Northern Calit'orniu. The ty])ical form, more eommon eastwiird, 

 has narrowly oblong leaves. The T. fabacca of Eastern Asia, to which this sjtecies lias been usu- 

 ally referred, has more si)reading pods, with larger and broader more compressed seeds. The only 

 other western species is T. jmiombifoi.ia, Richardson, confined to the Uocky Mountains, and dis- 

 tinguished by its recurved many-seeded pods. 



2. PICKERINGIA, Nutt. 

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

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

 obtuse. Stamens distinct. Style slightly incurved : stigma minute. Pud 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, Nutt. 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, G-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 Fxp. 

 282. 



Frequent on dry lulls from bake County to San Diego. The characters of the i)od disLinguish 

 the genua clearly from Avayyris. 



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 ; mcemes 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 Te.xas 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 lung ; 



