530 FLO I? A. v 



borne between or above the lowest pair of leaflets; leaflets 2-4 pairs, thin, obovate, 

 obtuse and mucronulate at the apex, 2-4 cm. long; flowers 1-2.5 cm. broad, few, in 

 short axillary racemes; calyx-lobes oblong, obtuse; stamens 10, the anthers of the 

 upper 3 imperfect; pod linear, very slender, strongly curved, I-I.5 dm. long, about 

 3 mm. wide. Along rivers, S. Tenn. to Ind., Kans., Fla. and Mex.. and throughout 

 tropical America and the warmer parts of the Old World. July-Oct. 



4. Cassia Marylandica L. Wild or American Senna. (I. F. f. 2037.) 

 Perennial, glabrous or pubescent with a few scattered hairs, 0.9-2.4 m. high, little 

 branched. Stipules subulate-linear, caducous ; leaves petioled, the gland borne 

 near the base of the petiole; leaflets 12-20, oblong or lanceolate-oblong, obtuse or 

 <>l>tusi>h, mucronate, rounded at the base, 2-5 cm. long; flowers 14-18 mm. broad, 

 numerous in axillary racemes; calyx-lobes oblong, obtuse; stamens 10, the upper 3 

 imperfect; pod linear, pubescent or becoming glabrous, 7-10 cm. long, 6 mm. wide, 

 curved. In swamps and wet soil, N. E. to Fla., Mich., Neb. and La. July-Aug. 



5. Cassia occidentalis L. Coffee Senna. (I. F. f. 2038. ) Glabrous, much 

 branched, 1.3-2 m. high. Stipules caducous ; gland borne near the base of the 

 petiole; leaflets 8-12, rounded at the base, 2-5 cm. long, 8-18 mm. wide; flowers 

 14-18 mm. broad, in short axillary racemes; stamens 10, the upper 3 imperfect; 

 calyx-lobes oblong, obtuse ; pod linear, glabrous, 1-1.5 dm. long, about 6 mm. 

 wide, somewhat curved, its margins thickened. In waste places, Va. to Ind., Kans., 

 Fla. and Mex., and throughout tropical Am. Also in the Old World. July-Aug. 



3. HOFFMANSEGGIA Cav. 



Herbs, or low shrubs, with glandular-punctate bipinnate leaves, small stipules, 

 and yellow flowers in racemes. Calyx deeply 5 -parted, the lobes nearly equal. 

 Petals 5, oval or oblong, imbricated. Stamens 10, distinct, slightly declined; fila- 

 ments often glandular at the base; anthers all alike, longitudinally dehiscent. Ovary 

 nearly sessile ; ovules 00 . Pod fiat, linear, oblong or ovate, curved or straight, 

 2-v alved, several-seeded. [In honor of Joh. Centurius, Graf Hoffmansegge, a 

 writer on Portuguese botany.] About 20 species, natives of western Am. and S. 

 Africa. Besides the following, some 9 others occur in the southwestern U. S. 



Leaflets black-puntate ; pod obliquely oblong. 1. H. Jamesii, 



Leaflets not punctate ; pod linear-oblong. 2. H. Falcaria. 



i. Hoffmanseggia Jamesii T. & G. James' Hoffmanseggia. (I. F. f. 

 2039.) Herbaceous, finely pubescent, branching from a deep woody root; stems 

 1.5-3 dm. high. Stipules subulate; leaves petioled, bipinnate; pinnae 5-7; leaf- 

 lets 9-19, oval or oblong, obtuse at each end, inequilateral, 3-6 mm. long; racemes 

 elongated; flowers yellow, distant, deflexed, 6-8 mm. long, the upper petal spotted 

 with red; pod flat, black-punctate, about 2.5 cm. long and 1 cm. wide, 2-3-seeded, 

 tipped with the base of the style. Prairies, Kans. to Tex. and N. Mex. June-July. 



2. Hoffmanseggia Falcaria Cav. Sickle-fruited Hoffmanseggia. 

 (I. F. f. 2040.) Herbaceous, puberulent, the glands of the peduncles and petioles 

 stalked; stems 3 dm. high or less. Stipules ovate ; leaves slender-petioled, bipin- 

 nate ; pinnae 7-11 ; leaflets 12-21, oblong, obtuse, 3-6 mm. long; racemes few- 

 several-flowered; pod flat, curved or nearly straight, 2.5-4 cm. long, about 6 mm. 

 wide, blunt, 8-12-seeded, the fruiting pedicels recurved. Kans. (according to 

 Fisher) to Tex. and Cal. Also in Central and South America. April-June. 



4. GLEDITSIA L. 



Large trees, with evenly once or twice pinnate leaves, small stipules, and small 

 greenish polygamous flowers in axillary spicate racemes. Calyx campanulate,3~5- 

 cleft. Petals 3 5. equal, sessile, inserted at the summit of the calyx-tube. Stamens 

 6 io, distinct; anthers all alike, longitudinally dehiscent. Ovary rudimentary or 

 none in the staminate flowers, in the fertile ones nearly sessile. Ovules 2-00 . Pod 

 linear or oval, coriaceous, tardily dehiscent. [In honor of J. T. Gleditsch. 1714- 

 1786, German botanist, the name often spelled Gleditschia.\ About 6 species, 

 natives of eastern N. A. and Asia. 



Pod linear-oblong, elongated, many-seeded. I. G. triacanthos. 



1'od obliquely oval, short, i-seeded. 2. G, aquatica. 



