58 MINNESOTA BOTANICAL STUDIES. 



North America: Hudson bay to Alaska; S. in U. S. from 

 Mont, to Minn., Nebr. and S. Colo. 



Minnesota: Infrequent in the prairie region of the southern 

 and western portions of the state. 



Minn, specimens in herb: Taylor 743, Glenwood; Sheldon 

 3664, Fergus Falls; Moyer 252, Montevideo; Moyer 253, Monte- 

 video; Sheldon 7237, Grace ville. Big Stone county; Sheldon 

 7418, Lake Traverse, Traverse county. 



Astragalus gracilis Nutt. Gen. 2 :100. 1818. 



Dalea parviflora Pursh. F1. Amer. Sept. 474. 1814. 

 Psoralea parviflora PoiR. Suppl. 4: 590. 1816. 

 Phaca parvifoUa Nutt. in T. & G. Fl. I: 348. 1838. 

 A. parvifloriis MacM. Metasp. Minn. Val. 325. 1892. 

 not A. parvifloriis Lam. Ency. Meth. 1: 310. 1783. 



Perennial, with fine, hoary pubescence, or glabrate; stems 3 

 to 5 dm. in length, virgate, erector ascending, sparsely branch- 

 ing; leaves 3 to 4 cm. in length, rarely reduced to the filiform 

 rachis; loaHets 8 to 20 mm. in length, in two to four pairs, nar- 

 rowly linear or filiform, obtuse or retuse; stipules minute, tri- 

 angular-acute, often connate below; jjeduncles 6 to 12 cm. in 

 length, bearing a slender, many-flowered raceme; flowers small, 

 4 to 6 mm. in length, on very short pedicels; calyx campanu- 

 late, with short, triangular teeth; corolla pale purple or whit- 

 ish; legume 5 to 7 mm. in length, reflexed-spreading, elliptic- 

 ovate, pointed, coriaceous, transversely rugose-veined, slightly 

 pubescent at first, becoming glabrous, concave dorsally, the 

 ventral suture prominent, unilocular, two or three seeded. 



North America: Colorado to Kan., Nebr., Mo. and Minn. 



Reported from southwestern Minnesota, Watson. 



Astragalus lotiflorus Hook. Fl. Bor.-Am. 1 : 152. 1833. 



Phaca lotiflora Nutt. in T & G. Fl. 1: 349. 1838. 

 A. lotiflorus Rook, toruid, pedunculosus A. Gkay, Proc. Am. Acad. 

 6:209. 1838. 



Perennial, caespitose with short, thick, woody, branching 

 stems, cinereously pubescent throughout with appressed hairs; 

 leaves 4 to 8 cm. in length, erect spreading, rachis pubescent 

 with white, spreading hairs; leaflets 5 to 15 mm. in length, 

 in five to ten pairs, oblong-elliptical, obtuse; stipules ovate, 

 acute or acuminate, persistent; jieduncles 6 to 8 cm. in length, 

 usually exceeding the leaves, capitately six to ten flowered; 

 floivers 8 to 12 mm. in length; calyx campanulate, the teeth 



