Sheldon: descriptions of astragali. 61 



specimens were in a preceding paper* inaccurately referred to 

 A. convallarius Greene. 



Astragalus teuellus Pursh. F1. Amer. Sept. 2:473. 1814. 



A. midtijiorm A. Gray, Proc. Am. Acad. (»:226. 1864, 

 Ervum inuUiflorumFu Rsn. Fl. Amer. Sept. 2:739. 1814. 

 Orobus dispar Nutt. Gen. 2 : 95. 1818. 

 FhacamgrescensB.ooK.F\.Bov.-Am. 1:143. 1833. 

 Homalohus midtifiorus T. & G. Fl. N. Am. 1 : 350. 1838. 

 A. m<jrescens A. Gray, Am. Journ. Sci. II. 33:410. 1862. 



Perennial, slightly puberulent throughout with usually scat- 

 tered hairs, becoming glabrous with age; -sterns 1.5 to 4.5 dm. in 

 length, rigid, erect spreading, branched, slender, numerous, 

 often growing in clumps 3 to 9 dm. in diameter; leaves 2 to 6 

 cm. in length, the rachis usually slightly curved; leaflets 

 6 to 15 mm. in length, in five to twelve pairs, linear or narrowly 

 oblong, acute or obtuse; stipules connate below but free above, 

 acuminate, erect, becoming dark-colored with age; peduncles as 

 long as or often exceeding the leaves, with a loosely, seven to 

 twelve flowered raceme; floiuers 6 to 8 mm. in length, becoming 

 refiexed with age, each borne on a short pedicel, which equals 

 in length the linear-subulate, refiexed bract which subtends it; 

 cahjx campanulate, the teeth shorter than the tube; corolla 

 ochroleucous, sometimes tinged with purple; legume 10 to 17 

 mm. in length, including the short stipe which slightly exceeds 

 the calyx, chartaceous, oblong, flat, glabrous, coarsely reticu- 

 lated, becoming black, unilocular, two to four seeded. 



North Amei'ica: W. Minn, to Mont., S. to Kan. and Colo., W. 

 to Utah, Nev. and S. Calif. • 



Minnesota: Otter Tail county. 



Minn, specimens in herb: Sheldon 3535, Lake Belmont, Otter 

 Tail county: Sheldon 3429, Eagle lake. Otter Tail county. 



* Bull Qeol. and Nat. HUt. Surv. of Minn. 9, 16, 1S91. 



