Sheldon: descriptions of astragali. ' 55 



Minn, specimens in herb: Clark 1, Minneapolis; Seward 1, 

 Minneapolis; Cross 1, Minneapolis; Pomeroy 1, Minneapolis; 

 Sandberg 276, Minneapolis; Kassuhe 51, Minneapolis; Sheldon 

 1068, Minneapolis; Ankeny 1, Minneapolis; Sandberg 132, Red 

 Wing; Sheldon 3729, Fergus Falls; Sheldon 3446, Lake Christ- 

 ina, Douglas county; Ballard 341, Jordan, Scott county; AHon 

 1, Minneapolis; Sheldon 8844, Dalton, Otter Tail county; Shel- 

 don 3498, Lake Christina, Douglas county. 



Astragalus plattensis Nutt. in T. & G. Fl. 1 : 332. 1838. 



A. caryocarpus Torb. in Ann. Lye. N. Y. 2 : 179. 1828. 

 not A. cai-yocarpus Ker. Bot. Reg. 2 : 176. 1816. 

 A. mexicanus A. Gray, PI, Lindh. 176. 1845. 



Perennial, loosely villous throughout; stems 1.5 to 3 dm. in 

 length, erect or ascending, striate, often contorted; leaves 5 to 

 10 cm. in length, rachis grooved above; leaflets 8 to 10 mm. in 

 length, in six to ten pairs, obovate, oblong or elliptical, obtuse, 

 often glabrous above; s^ipu^esfoliaceous, ovate-acuminate, some- 

 times clasping but not connate, becoming reflexed; peduncles 6 

 to 8 cm. in length, subcapitate; flowers 12 to 16 mm. in length, 

 crowded, short-pedicelled, spreading; calyx cylindrical, loosely 

 villous, the filiform, spreading teeth one-third to one-half the 

 length of the tube; corolla ochroleucous, tinged or tipped with 

 purple; legume 14 to 20 mm. in length, ovate-acuminate or ob- 

 long, slightly curved, sulcate, minutely pubescent, finely trans- 

 versely rugose-veined, completely bilocular, 10 to 12 seeded. 



North America: Minn, to Ind. and N. Alabama; west to Kan., 

 Nebr., Colo, and Texas. 



This species has been reported from western and southwest- 

 ern Minnesota, but no specimens purporting to come from the 

 localities named have been seen by the writer. 



Astragalus tennesseensis A. Gray has heretofore been referred 

 to the above, but it seems to be a valid species. It has been 

 found from northern Ills, to Tenn. and Alabama. 



Astralagus carolinianus Linn. Spec. 757, N. 9. 1753. 



A. canadensis Linn. 757, N. 10. 1753. 



Perennial, slightly puberulent or glabrate; stems 3 to 12 dm. 

 high, erect, usually striate, especially above and in the more 

 pubescent forms; leaves .5 to 3 dm. in length, the rachis striate; 

 leaflets 10 — 40 mm. in length, in five to fourteen pairs, elliptical 

 or oblong, usually glabrous above but white pubescent beneath, 

 acute, obtuse or retuse; stipules triangular- acuminate, connate 



