148 LEGUMINOSJO. astragalus. 



hairs: stems short, depressed: stipules oblong, aouminate, appressed, 

 membranaceous: leaflets 13-15, linear-oblong: peduncles as long as the 

 leaves or shorter, 3-4-flowered ; bracts linear, as long as the cylindrical 

 elongated- blackish-hairy calyx; teeth of the calyx one-third as long as the 

 tube : pods oblong-ovate, attenuate above, incurved, silky-pubescent. 

 Southern Idaho and Wyoming. 



Series II. Phaca L. Gen. n. 891, as genus. Pod 1-celled, 

 neither suture being inflexed, nor the ventral more intruded than 

 the dorsal. 



§ 9. Eriocarpi Gray Proc. Am. Acad, vi, 212. Pod very 

 woolly, short turgid, coriaceous, more or less incurved, acumi- 

 nate or pointed, sessile. Stems prostrate, from a stout perennial 

 root. 



A. inflexus Dovigl. in G. Don. Gen. Syst. ii, 256. Soft-woolly 

 throughout : stems 1-2 feet long, prostrate, branching : stipules subulate or 

 acuminate from a rather broad huae, 6-8 lines long : leaflets 21-25, oblong 

 or oblanceolate, about 6 lines long, densely silky peduncles not exceeding 

 the leaves; flowers purple, rather numerous, in short capitate spikes: 

 bracts setaceous, 6-8 lines long ; calyx about equalling the lateral petals, 

 its subulate teeth about as long as the tube ; upper petal longer than the 

 lateral ones, pubescent on the back : pods ovate, acuminate, densely silky- 

 villous, at length strongly inourved, 1-celled but at maturity the dorsal 

 suture becomes inflexed so as to nearly meet the ventral, but not forming 

 a partition. On sandy banks and plains, along the Columbia river above 

 The Dalles. 



A. dorycnioides Dougl. in G. Don Gen. Syst. ii, 258 (?). Appressed- 

 silky with while hairs, stems short, depressed, several from the crown of a 

 stout perennial root 1-3 inches long : stipules subulate, setaceous-acumi- 

 nate, 6-9 lines long : leaves numerous ; leaflets usually 13, 6-10 lines long 

 by 2 lines broad, oblong to oblanceolate, acute or acuminate, densely silky 

 both sides; peduncles shorter than ijie leaves; capitately few -flowered; 

 calyx tubular, 4-5 lines long, its subulate teeth about half as long as the 

 tube ; corolla 8-10 lines long, persistent, bright purple : pods ovate, acumi- 

 nate, at length strongly incurved, densely villous, 10-12 lines long, 1-celled, 

 the dorsal suture at maturity strongly intruded, the ventral rounded. On 

 rocky hillsides, eastern Oregon and Washington. 



A. leucocystis Greene Eryth. iii, 76. (A. lanocarpus Sheld. 1. c. 144). 

 Woolly-pubescent with long white hairs : stems cespitose, very short, from 

 a thick perennial root, branching and forming a close mat 4-8 inches in 

 diameter : leaves numerous, 3-6 inches long, the rachis channelled ; leaf- 

 lets 7-11, usually absent from the lower half of the rachis, narrowly obo- 

 vate to oblong, acute or obtuse, 3-6 lines long, stipules tria-igular ovate, 

 acuminate, sheathing peduncles equalling the leaves, 3-6-flowered ; calyx 

 narrowly cylindrical, with unequal teeth, one-fifth as long as the tube; 

 corolla ochroleueous tipped with purple, 10-12 lines long: pods 8-10 lines 

 long, coriaceous, white-pubescent with long stiff hairs, sessile, oblong, 

 slightly arcuate, 1-celled, but with the ventral suture somewhat intruded, 

 lined within with cobwebby hairs which traverse the cavity, few to many- 

 seeded. On dry hillsides and plains, eastern Oregon and Washington. 



A. Purshii Dougl. Hook. Fl. i, 152. Very hirsute, stems short, diffuse; 

 leaflets 13-17, oblong ; stipules lanceolate, acuminate : peduncles half as 

 long as the leaves ; flowers in loose heads, spreading ; bracts linear-lanceo- 

 late, twice as long as the pedicels ; calyx elongated, membranaceous, its 

 subulate teeth half as long as the tube, equal ; corolla yellow, 18 lines 

 long, upper petal obovate, equalling the narrow lateral ones, keel purple- 

 tipped; ovary subsessile, linear, very hirsute. Brit. Columbia to Caliior- 

 nia and Utah. 



