94 ORDER 43. LEGUMINOS.E. 



1 P. candldnm MX. Glabrous, erect; Ifts. 7 9, all sessile, linear-lanceo,ate, ma 



cronate, glandular beneath ; spikes on long peduncles ; bracts longer than the whltt 

 petals. Dry prairies, S. and W. Slender. 8f. Leaflets 1'. July. 



2 P. vloliicenm MX. Minutely pubescent, erect ; Ifts. 5, linear, glandular beneath ; 



ppikes pedunculate; bracts shorter than the violet petals. Prairies, West. 2f. Leaf- 

 lets 1'. Heads 1' long, brilliant. July, Aug. 



3 P. carneum MX. Glabrous, erect ; Ifts. 5 7, lance-linear; spikes oblong, pedun- 



culate ; bracts obovate ; pet. oblong. Ga. and Kla. Slender. 1 2f. Rose-wh. Aug. 



4 P. gtraclle Nutt. Glabrous, decumbent at base ; Ills. 7, lance-linear ; spikes some- 



what sessile ; bracts acute ; petals ovate. Pine woods, Fla. and W. 1 2f. White. 



5 P. corymbosum MX. St. corymbously branched; spikes capitate, sessile ; bracts 



broad, colored, the outer leaf-bearing ; Ifts. linear, 5 7. South. 2f. White. Sept. 



40. ASTRAGALUS, L. MILK VETCH. Calyx 5-toothed. Pet elon- 

 gated, erect, clawed. Vex. narrow, equalling or exceeding the obtuse keel. 

 Btam. diadclphous (9 and 1). Legume mostly turgid, 2-valved, 1-celled, or 

 2-celled partly or completely by the intrusion of the sutures. Seeds 1 oo, 

 funiculus slender. 11 chiefly. Leaves unequally pinnate. Flowers in 

 spikes or racemes. (Including Phaca, L.) 



$ Legume abruptly stipitate, oblong, straight-pubescent Nos. 1,3 



S Legume sessile in the calyx. a Fls. white or yellowish... (6) 



a Fls. blue or tipped with blue. . . (c) 



ft Legume straight, ovoid-oblong, smooth, dry, turgid Nos. 3, 4 



ft Legume curved, oblong, woolly or vein y, dry, flattened Nos. 5, 6 



e Legume curved, crescent-shaped, 1-celled, smooth No. 7 



e Legume globular, fl eshy ; when dry splitting into two Nos. 8, 9 



1 A. Robbinsll Oakes. Erect ; Ifts. 511, elliptical ; cor. white, twice longer than 



the calyx ; pod puberulent, 1-celled. Rocky shores, Vt. Rare. 8 14 7 . Cor. white, 

 5". May, June. 



2 A. alpinus L. Diffuse; Ifts. 13 21, ovate; cor. blue above, thrice longer than the 



calyx ; pod pubescent with black hairs, 2-celled. Mts. Vt. Me. Can. June, July. 



3 A. Caiiadeiisls L. Canescent, tall; Ifts. 21 31, elliptical; bracts as long as the 



calyx ; fls. greenish ; pod 2-celled. Banks. 2 3f. Pod 6". July, August. 



4 A. Co<5peri Gray. Smoothish ; Ifts. 1327, elliptical ; rac. exceeding the leaves ; fls. 



white ; pod inflated, 1-celled, roundish-ovate, with a deep groove at the ventral BU- 

 tare. Banks, N. Y. and W. 1 2f. June, July. (Phaca neglecta T. & G.) 



5 A. glaber MX. Erect, smoothish ; Ifts. 15 23, lance-oblong or linear; spikes loose; 



pod smooth, flattened, 2-celled. Pine woods, S. 1 2f. Flowers greenish. July. 



6 A. villosus MX. Low, villous ; Ifts. 915, oblong-oval ; rac. ovoid, dense ; pod 3- 



angled, 1-celled, clothed with long hairs. Dry, S. 3 &. Fls. dull yellow. Mtr. Apr. 



7 A. obeordatiis Ell. Low, assurgent, smoothish; Ifts. 712 pairs, 4", oblong to 



obovate, cordate at apex ; ped. as long as the leaves, 8-15-flowered ; pod deflexed, in- 

 curved, pointed. 111. to Ga. 6 1(X. April June. (A. distortus T. & G.) 



8 A. caryocarpus Ker. Low, diffuse, whitish, downy or nearly smooth ; leaven 



stalked; Ifts. 1521, obovate; ped. longer; fls. 810", capitate; pod as large as, a 

 grape, smoothish, eatable. 111. W. and S. May. (A. Mexicanus DC.) 

 Q A. Plattensls N. Villous, diffuse ; Ifts. 812 pairs, oblong ; stip. lanceolate ; rac. 

 capitate ; pod ovoid, villous. Gravel, 111. Tenn. and W. May. 



41. TEPHROSIA, L. GOAT'S RUE. CAT-GUT. Calyx with 5, nearly 

 i^qual, subulate teeth. Bracteoles 0. Vex. large, orbicular. Keel obtuse, 

 cohering with the wings. Sta. diadelphous (in the following species) ot 

 inonadelphous. Legume linear, much compressed, many-seeded. U Lvs. 

 unequally pinnate. Leaflets mucronate. Flowers white-purple. 



