148 LEGUMINOS.E. (PULSE FAMILY.) 



der, 6' long, curved. (C. obtusifolia, L.) River-banks, S. Va. to Fla., west 

 to S. Ind., Mo., and Ark. 



C. OCCIDENTALS, L. Annual; leaflets 4-6 pairs, ovate-lanceolate, acute ; 

 an ovate gland at the base of the petiole ; pods long-linear (5' long) with a 

 tumid border, glabrous. Va.,S. Ind., and southward. (Adv. from Trop.Amer.) 



* * Leaflets small , somewhat sensitive to the touch ; stipules striate, persistent ; a 

 cup-shaped gland beneath the lowest pair of leaflets ; anthers all perfect ; 

 flowers in small clusters above the axils ; pods flat ; root annual. 



3. C. Chamsecrista, L. (PARTRIDGE PEA.) Stems spreading (1 long) ; 

 leaflets 10- 15 pairs, linear-oblong, oblique at the base ; flowers (large) on slen- 

 der pedicels, 2 or 3 of the showy yellow petals often with a purple spot at base ; 

 anthers 10, elongated, unequal (4 of them yellow, the others purple) ; style slen- 

 der. Sandy fields ; common, especially southward. 



4. C. nictitans, L. (WILD SENSITIVE-PLANT.) Leaflets 10-20 pairs, 

 oblong-linear -flou-ers (very small) on very short pedicels ; anthers 5, nearly equal; 

 style short. Sandy fields, A'. Eng. to Fla., west to Ind., Kan., and La. 



42. HOFFMANSEGGIA, Cav. 



Calyx 5-parted. Petals 5, nearly equal, oblong or oval. Stamens 10, dis- 

 tinct, slightly declined ; anthers dehiscing longitudinally. Pod flat, oblong, 

 often falcate, few -several-seeded. Low perennial herbs, or woody at base, 

 punctate with black glands, with bipinnate leaves, and naked racemes of yel- 

 low flowers opposite the leaves or terminal. (Named for Count von Hoffman- 

 segg, a German botanist.) 



1. H. Jam^sii, Torr. & Gray. Herbaceous, finely pubescent; pinnae 2 

 or 3 pairs with an odd one, the small oblong leaflets 5-9 pairs; pods broad, 

 falcate, 1' long, 2-3-seeded. Central Kan. to Tex., Ariz., and Mex. 



43. GYMNOCLADUS, Lam. KENTUCKY COFFEE-TREE. 



Flowers dioecious or polygamous, regular. Calyx elongated-tubular below, 

 5-cleft. Petals 5, oblong, equal, inserted on the summit of the calyx-tube. 

 Stamens 10, distinct, short, inserted with the petals. Pod oblong, flattened, 

 hard, pulpy inside, several-seeded. Seeds flattish. A large tall tree, with 

 rough bark, stout branchlets, not thorny, and large unequally twice-pinnate 

 leaves ; the leaflets standing vertically. Flowers whitish, in terminal racemes. 

 (Name from yv^vos, naked, and K\dSos } a branch, alluding to the stout branches 

 destitute of spray.) 



1. G. Canadensis, Lam. Leaves 2-3 long, with several large partial 

 leafstalks bearing 7-13 ovate stalked leaflets, the lowest pair with single leaf- 

 lets; stipules wanting; pod 6- 10' long, 2' broad; the seeds over ' across. 

 Rich woods, western N. Y. and Penn. to Minn., E. Neb., and Ark. 



44. GLEDITSCHIA, L. HONEY-LOCUST. 



Flowers polygamous. Calyx short, 3 -5-cleft, the lobes spreading. Petals 

 as many as the sepals and equalling them, the 2 lower sometimes united. Sta- 

 mens 3-10, distinct, inserted with the petals on the base of the calyx. Pod flat, 



