2Q8 



PAPILIONACEAE. 



[Vol.. II. 



4. Astragalus Tennesseensis A. Gray. 

 Tennessee Milk Vetch. (Fig. 2128.) 



Astragalus Tennesseensis A. Gray; Chapm. Fl. 

 S. States, 98. 1860. 



A stragalus Plattensis var. Tennesseensis A. Gray, 

 Proc. Am. Acad. 6: 193. 1864. 



Stems erect or ascending from a deep root; 

 plant villous with long whitish hairs. Leaflets 

 I 5~3 I > oblong, or linear-oblong, obtuse, or 

 emarginate, nearly glabrous above, 6 // -io // 

 long, 2 // -4 // wide; stipules lanceolate, oval, or 

 ovate-lanceolate; peduncles about equalling 

 the leaves; racemes short, several-many-flow- 

 ered; flowers about io // long; pod oblong, 2- 

 celled, fleshy, i' long or rather more, strongly 

 wrinkled, at least when dry, its summit 

 strongly curved. 



On hillsides, Tennessee to Alabama and Mis- 

 souri. March-May. 



5. Astragalus mollissimus Torr. Woolly 

 Loco- weed or Crazy- weed. (Fig. 2129.) 



Phaca villosa James, Trans. Am. Phil. Soc. (II.) a: 



186. 1825. Not Nutt. 1818. 

 Astragalus mollissimus Torr. Ann. Lye. 2: 178. 1826. 



Decumbent or ascending, stout, bushy, densely 

 villous-pubescent, i-2 high. Stem very short; 

 stipules membranous, ovate, pointed, $"-$" long, 

 adnate to the petiole; leaflets 19-27. oval, obtuse, 

 but pointed at the apex, narrowed or rounded at 

 the base, 4 // -6 // long, 2 / '-3 // wide; peduncles 

 equalling or exceeding the leaves; flowers violet- 

 purple, 8 // -i2 // long, in dense spikes; pod oblong, 

 dry, cartilaginous, glabrous, dehiscent into 2 

 valves, somewhat compressed, sessile, 2-celled, 

 5 // -io // long, about 3" thick, furrowed at both 

 sutures, slightly curved at maturity. 



Prairies, Nebraska and Colorado, south to Texas 

 and New Mexico. June. The popular name of the 

 plant is from its poisonous effects on cattle. 



6. Astragalus Carolinianus L. Carolina 

 Milk Vetch. (Fig. 2130.) 



Astragalus Carolinianus L. Sp. PI. 757. 1753. 

 Astragalus Canadensis L Sp. PI. 757. 1753- 



Glabrous or slightly pubescent, erect or ascending, 

 branched, i-4 high. Stipules membranous, broadly 

 lanceolate, acuminate, 2 // -4 // long; leaflets 15-31, 

 elliptic or oval, obtuse or slightly emarginate at 

 the apex, rounded at the base, i'-2' long, $"-<)" wide; 

 peduncles longer than the leaves, or shorter; flowers 

 greenish yellow, <>" -S" long in dense thick spikes; 

 pod sessile, 2-c"elled, coriaceous, dehiscent, glabrous, 

 erect, terete, or sometimes slightly furrowed at the 

 dorsal suture, pointed, nearly straight, 5"-8" long. 



Along streams, Hudson Bay and Quebec to the Rocky 

 Mountains, south to western New York, Georgia, Louisi- 

 ana and Colorado. July-Aug. 



