Sheldon: DESCKIPTIONS oF astragali. 57 



in length; leaflets 8 to 30 mm. in length, in four to ten pairs, nar- 

 rowly or linear-oblong, acute or obtuse, the margins becoming 

 re volute: stipules triangular-acuminate, scarious, often reflexed, 

 mostly connate below and free above; peduncles 8 to 10 cm. in 

 length, usually exceeding the leaves, striate, bearing a dense, 

 oval spike; flowers 10 to 18 mm. in length, slender; calyx cylin- 

 drical, the tube equalling or exceeding the setaceous teeth, sub- 

 villous with appressed white or black and white hairs inter- 

 mixed; corolla purple or ochroleucous tipped with purple; 

 legume 10 to 15 mm. in length, coriaceous, pubescent, sessile, 

 ascending, straight, usually triangular- compressed, with a 

 dorsal sulcus, bilocular by the intruded dorsal suture, usually 

 many-seeded. 



North America: Minn, and the Saskatchewan to British 

 Columbia and Washington; S. to Oregon and W. Kan. 



Minnesota: Infrequent in the prairie region of the southern 

 and western portions of the state. 



Minn, specimens in herb: Sheldon 2019, Brainerd; Oestlund 

 208, Minneapolis; Moyer 1, Mo^itevideo; Holzinger 298, Han- 

 cock; Taylor ^12, Glenwood; Sheldon 1381, Lake Benton; Sheldon 

 3462, Lake Christina, Douglas county; Sheldon 5278, Lakeville 

 lake, Dakota county. 



Astragalus hypoglottis Linn. Mant. 2:274. 1771. 



A. glaux Pall. Reise, 2: 464. 1771. 



A. arenarius Pall. Reise, 2:464. 1771. 



A. agrestis Dougl. in G. Don. Gen. Syst. Gard. & Bot. 2: 257. 1832. 



A. goniatus Nutt. in T. & G. Fl. N. Am. 1:330. 1838. 



Perennial, loosely pubescent or glabrous; stems 8 to 25 cm. 

 in length, diffusely procumbent or ascending, nearly terete; 

 leaves 4 to 8 cm. in length, the rachis channelled; leaflets 6 to 15 

 mm. in length, in seven to ten pairs, oblong or linear-oblong, 

 obtuse or retuse; stipules subfoliaceous, ovate, acute or obtuse, 

 sheathing; peduncles thick, striate, capitate or subspicate; 

 flowers 15 to 22 mm. in length, erect; calyx cylindrical, loosely 

 pubescent with nigrescent hairs, especially the linear teeth 

 which are equal to or shorter than the tube; corolla violet or 

 yellowish purple tinged with green; legume 7 to 10 mm. in 

 length, coriaceous, silky- villous with white, usually appressed 

 hairs, sessile, erect or ascending, straight, triangular-com- 

 pressed, with a deep dorsal sulcus, completely bilocular by the 

 intruded dorsal suture, usually many seeded. 



