56 MINNESOTA BOTANICAL STUDIES. 



below; peduncles 6 to 20 cm. in length, bearing long, dense 

 spikes; flowers 10 to 15 mm. in length, numerous, becoming 

 horizontal or reflexed; cahjx cylindrical, with short, subulate 

 teeth; corolla greenish cream-color; legume 10 to 15 mm. in 

 length, nearly erect, oblong or elliptical, glabrous, rarely finely 

 reticulated or cross-striated, terete or obscurely triangular, 

 sometimes slightly sulcate dorsally, bilocular, with a thin, clear 

 membrane lining the cavities. 



A polymorphous species varying much in the size and shape 

 of the leaflets. 



North America: Quebec, Ont., Hudson bay and Rocky mts. 

 to N. Y., Ga. and Fla. ; W. to the headwaters of the Columbia 

 river and the Saskatchewan; S. in mountains to the Great 

 Basin region; through Colo., Minn., Nebr., Kan. and Ark. 



Minnesota: Throughout the state. ^ 



Minn, specimens in herb: Sheldon 3415, Eagle lake. Otter 

 Tail county; Pomeroy 2, Hennepin county; Kdssuhe 52, Minne- 

 apolis; Holtz 1^, Hennepin county; T«?/^or 685, Minnesota lake; 

 Taylor 715, Minnesota lake; Ballard 488, Prior's lake, Scott 

 county; Sheldon 1587, Lake Benton; Taylor 912, Glenwood; Bal- 

 lard 767, Waconia; Sheldon 3786, Sand lake, Otter Tail county; 

 Herrick7b, Minneapolis; A^frndber^ 133, Goodhue county; Holz- 

 inger 56, Winona county; Holzinger 57, Winona county; Burgle- 

 haus 1, Hennepin county; Sheldon 3275, Bridgman, Mille Lacs 

 county; Sheldon 3852, Dalton, Otter Tail county; Sheldon 3737, 

 Fergus Falls. Otter Tail county; Sheldon 7212, Graceville, (a 

 form with elliptical-ovate leaflets, 4 to 5 mm. in length). 



Astragalus laxmanni Jacq. Hort. Vindob. 3 : 22. 1776. 



A. adf<urgens Pall. Astrag. 40. 1800. 

 ^. syriacus Pall. Reise, 3 : 559. 1771, • 



not A. syriacus Linn. Spec. 759. 1753. 



A. semibiloculans DC. Astrag. 136. 1802. 



A. adsurgens Pall. var. prostratus Fisch. Hort. Gar. ex DC. Prod. 



2:287. 1825. 

 A. microphyllus Georgi, Beschr. Russ. Nachtr. 296. 1802. 

 A. laxmanni Nutt. Gen. 3 : 99. 1818. 

 A. striatus Nutt. la T. & G. Fl. N. Am. 1 : 330. 1838. 

 A. adsurgens Fall,, var. laxmanni Travt v. in Bull. Mosq. 1 :507. 



1860. 

 A. hypoglottis Linn. var. robustus Hook, in Lond. Journ. Bot. 



6:210. 185i. 



Perennial, cinereous with minute, appressed pubescence, or 

 glabrate; stems 1 to 4 dm. high, ascending or decumbent, branch- 

 ing only at the base, striate or nearly terete; leaves 4 to 12 cm. 



