04 ORDER 43. LEGUMLNOSvE. 



1 P. candidum MX. Glabrous, erect; Ifts. 7 9, all sessile, linear-lanceolate, ma 



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

 petals. Dry prairies, S. and W. Slender. 3f. Leaflets V. July. 



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



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

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



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



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



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



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

 6 P. corymfoosum MX. St. corymbously branched ; spikes capitate, sessile ; bracts 

 broad, colored, the outer leaf-bearing ; Ifts. linear, 57. South. 2f. White. Sept. 



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

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

 Stam. 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 GO, 

 funiculus slender, n chiefly. Leaves unequally pinnate. Flowers in 

 spikes or racemes. (Including Phaca, L.) 



Legume abruptly stipitate, oblong, straight-pubescent Nos. 1, 2 



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



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



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



b Legume curved, oblong, woolly or veiny, dry, flattened Nos. 5, 6 



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



c Legume globular, fleshy ; when dry splitting into two Nos. 8, 9 



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



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

 5". May, June. 



2 A. alpinus L. Diffuse; Ifts. 1321, ovate; cor. blue above, thrice longer than the 



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



3 A. Canadensis L. Canescent, tall; Ifts. 2131, elliptical; bracts as long as the 



calyx ; fls. greenish ; pod 2-celled. Banks. 2 3f. Pod G". 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 su- 

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



5 A. glaber MX. Erect, emoothish ; Ifts. 1523, 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. 9-15, oblong-oval; rac. ovoid, dense ; pod 3- 



angled, 1-celled, clothed with long hairs. Dry, S. 36'. Fls. dull yellow. Mar. Apr. 



7 A. ofocordatus Ell. Low, assurgcnt, smoothish ; Ifts. 712 pairs, 4", oblong to 



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

 curved, pointed. 111. to Ga. 610'. April June. (A. distortus T. & G.) 



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



stalked; Ifts. 1521, obovate; ped. longer; fls. 8 10", capitate; pod as large as a 

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



9 A. Plattensis 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 

 t*qual, subulate teeth. Bracteoles 0. Vex. large, orbicular. Keel obtuse, 

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

 monadelphous. Legume linear, much compressed, many-seeded. l Lvs. 

 unequally pinnate. Leaflets mucronate-. Flowers white-purple. 



