504 LEGUMINOSAE (PULSE FAMILY) 



1. S. uncinata Willd. Prickles hooked ; pinnae 4-6 pairs ; leaflets elliptical, 

 reticulated with strong veins beneath ; pods oblong-linear, nearly terete, short- 

 pointed, densely prickly, 5 cm. long. (Morongia Britton.) Dry prairies and 

 open woods, Va. to Fla. and Tex.; north w. in Miss, basin to la. and 111. June, 

 July. 



2. S. angustata T. & G. Leaflets oblong-linear, scarcely veined ; pods slen- 

 der, taper-pointed, sparingly prickly, 1 dm. long. {Morongia Britton.) Dry 

 sandy soil, s. Va. to Fla., Tenn., and Tex. June- Aug. 



5. GYMN6CLADUS 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 tall unarmed tree, 

 with rough bark, stout branchlets, and large unequally twice-pinnate leaves. 

 Flowers whitish, in terminal racemes. (Name from yvfji.v6s, naked, and /cXdSos, 

 a branch, alluding to the stout branches for many months destitute of spray.) 



1. G. diolca (L.) Koch. Leaves 6-9 dm. long, with several large partial 

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

 stipules wanting; pod 1.5-2.5 dm. long, 3-4 cm. broad; seeds over 1.3 cm. 

 across. (G. canadensis Lam.) Rich woods, centr. N. Y. and Pa. to Minn., e. 

 Neb., Okla., and Tenn. May, June. 



6. GLEDiTSIA L. HONEY LOCUST 



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

 as many as the sepals and equaling them, the two lower sometimes united. 

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

 flat, 1-many-seeded. Seeds flat. Thorny trees, with abruptly once or twice 

 pinnate leaves, and inconspicuous greenish flowers in small spikes. Thorns 

 above the axils. (Simplified and Latinized name of J. G. G-leditsch, a botanist 

 contemporary with Linnaeus.) 



1. G. triacanthos L. (HONEY LOCUST.) Thorns stout, often triple or com- 

 pound ; leaflets lanceolate-oblong, somewhat serrate ; pods linear, elongated 

 (2-4.5 dm. long), often twisted, filled with sweet pulp between the seeds. Rich 

 woods, w. N. Y. and Pa. to Ga., w. to e. Neb., Kan., and Tex.; common in 

 cultivation, and establishing itself northeastw. May, June. 



2. G. aquatica Marsh. (WATER LOCUST.) Thorns slender, mostly simple ; 

 leaflets ovate or oblong ; pods oval, \-seeded, pulpless. Deep swamps, S. C. to 

 Fla. and Tex.; north w. in Miss, basin to Ky., Ind., 111., and Mo. A smaller 

 tree, 8-12 m. high. 



7. CASSIA [Tourn.] L. SENNA 



Sepals 5 , scarcely united at base. Petals 5, little unequal, spreading. Sta- 

 mens 5-10, unequal, and some of them often imperfect, spreading ; anthers 

 opening by 2 pores or chinks at the apex. Pod many-seeded, often with cross 

 partitions. Herbs (in the United States), with simply and abruptly pinnate 

 leaves, and mostly yellow flowers. (An ancient name of obscure derivation.) 



* Leaflets large ; stipules deciduous ; the three upper anthers deformed and 

 imperfect; flowers in short axillary racemes, the upper ones panicled; 

 herbage glabrous. 



1. C. marilandica L. (WILD S.) Root perennial ; stem 9-12 dm. high ; 

 stipules linear-setaceous, caducous ; leaflets 5-9 pairs, lanceolate-oblong, obtuse; 

 petiole with a slender club-shaped gland near the base ; pods linear, slightly 

 curved, flat, at first hairy, 6.5-11 cm. long, their segments as long as broad; 

 seed flat, quadrate- orbicular. Alluvial soil, N. E. to O., Tenn., and N. C. 

 July, Aug. 



