Hosackia. LEGUMINOS^E. 137 



2. Pod as in EUHOSACKIA, usually somewhat compressed, 3 7-seeded, glabrous : 

 seeds broadly oblong to orbicular : keel narrowed above into a rather short 

 mostly acute incurved beak, equalling or exceeding the wings: claws equally 

 approximate to each other, included in the calyx : jiowers small, mostly soli- 

 tary, ascending : leaflets 1 to 5, on a more or less dilated rhachis ; stipules 

 gland-like : annuals. MICROLOTUS, Benth. 



* Flotvers solitary, peduncled, usually bracteate with a single leaflet : corolla scarcely 



exceeding the calyx : leaves nearly sessile, 1 3-foliolate. 



13. H. Purshiana, Benth. More or less silky-villous or sometimes glabrous, 

 erect or ascending, often a foot high or more : leaflets varying from ovate to lanceo- 

 late, 3 to 9, lines long : peduncles usually exceeding the leaves : flowers 2 or 3 lines 

 long : calyx-teeth linear, much longer than the tube, about equalling the corolla : 

 pod narrow, linear, glabrous, about an inch long, 5 - 7-seeded : seeds oblong. 

 Bot Reg. xv, under t. 1257. //. elata, floribunda, pilosa, & mollis, JTutt. in Torr. 

 & Gray, Fl. i. 327. 



A very variable species and of wide range, extending from Washington Territory to Northern 

 Mexico, and eastward to the Upper Missouri, Arkansas, and even North Carolina. 



* * Flowers nearly sessile and mostly solitary in the axils, not bracteate : corolla, ex- 

 ceeding the calyx : leaflets 3 to 5, obovate to oblanceolate, scattered on a somewhat 

 dilated rhachis : loio and much branched. 



14. H. subpinnata, Torr. & Gray. Villous or glabrate, decumbent or ascend- 

 ing, a span high or less : leaflets half an inch long or less : flowers 3 or 4 lines long ; 

 calyx scarcely half as long, the subulate teeth about equalling the tube : pod linear- 

 oblong, compressed, 6 to 9 lines long, about 5-seeded. Fl. i. 326. Lotus subpin- 

 natus, Lag. ; Hook. & Arn. Bot. Beechey, 17, t. 8. 



Frequent near the coast from Washington Territory to Santa Barbara, and more rare eastward 

 in the interior to S. Utah, Parry. Also in Chili. 



15. H. brachycarpa, Benth. Resembling the last : softly villous : calyx longer, 

 the teeth linear and very much longer than the tube : pod 3 or 4 lines long, oblong 

 or linear-oblong, villous, 2 - 4-seeded. PI. Hartw. 306. 



From the upper Sacramento River in the foot-hills of the Sierra Nevada, and also near the 

 coast, to Southern California. 



3. Pod long-attenuate upward, incurved, somewhat terete, 1 -^-seeded : seeds terete, 

 linear or oblong : keel broad above and mostly obtuse ; claw of the standard 

 remote from the rest : stigma minute, glabrous : umbels few-floivered, sessile or 

 pedunculate ; Jiowers and fruit reflexed : stipules minute dark-colored glands : 

 leaflets 3 to 7 : mostly perennial. SYRMATIUM, Gray. (Syrmatium, Vogel.) 



* Glabrous or sparingly pubescent : stems slender and virgately branched : body of the 

 pod elongated and much exserted beyond the calyx, only slightly pubescent : seeds 2, 

 straight, 1| lines long : calyx-teeth much shorter than the tube. 



-t- Someivhat woody at the base and nearly glabrous : stems angled : leaflets thick and 



approximate, usually 3. 



16. H. glabra, Torrey. Very nearly glabrous, the calyx and young leaves often 

 somewhat appressed-silky : stems woody at base, 2 to 8 feet high, erect with weak 

 straggling branches or sometimes decumbent : leaflets oblong to linear-oblong, 3 to 

 6 lines long, obtuse or acute : umbels numerous, sessile : flowers 3 or 4 lines long : 

 calyx 1| to 2^ lines long; the teeth narrowly subulate, erect, a half to one fourth 

 as long as the tube. Bot. "VYilkes Exp. 274. Syrmatium glabrum, Vogel in 

 Linnsea, x. 591. H. scoparia, Nutt. in Torr. & Gray, Fl. i. 325 ; Gray, 1. c. 346. 

 H. crassifolia, Nutt. 1. c. 



Common in the Coast Ranges from Lake Co. (Torrey) to San Diego. 



