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 yvnv6s, naked, and jcXdSos, 

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

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



6. GLEDfTSIA 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. Gleditsch, a botanist 

 contemporary with Linnaeus.) 



J. 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, 1-seeded, pulpless. Deep swamps, S. C. to 

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

 tree, 8-12 m. high. 



7. CASSIA [Tourn.] L. SENNA 



Sepals 6 , 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 6-9 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. 



