LEGUMINOS.E. (PULSE FAMILY.) 125 



7. C. nictitans, L. Annual; pubescent; leaflets numerous, oblong lin- 

 ear ; stipules and bracts subulate ; flowers small, 2 - 3 in a cluster above the 

 axils, on short pedicels ; petals unequal ; stamens 5, nearly equal. 



Var. aspera. (C. aspera, Ell.) Hirsute; stamens 7-9, very unequal ; 

 ovary very hairy; flowers larger. Dry old fields, Florida to North Carolina, 

 and westward. August. Stem 1 high, often prostrate. Leaflets about 40, 

 sensitive, like those of the preceding species. 



44. GLEDITSCHIA, L. HONEY-LOCUST. 



Flowers polygamous. Sepals 3-5, united at the base, spreading. Petals 

 as many, or less by the union of the two lower ones. Stamens 3-5, distinct, 

 inserted with the petals on the base of the calyx. Legume stipitate, flat, 1 - 

 many-seeded. Seeds compressed. Thorny trees. Leaves abruptly 1 - 2- 

 piuuate, with oblong serrate leaflets. Flowers small, greenish, in short 

 spikes. 



1. G. triacanthos, L. Leaflets lanceolate-oblong; thorns mostly com- 

 pound ; legume very long, many-seeded, pulpy within. Rich woods. June 

 -July. A large tree. Legume 12'- 18' long, 1' wide, twisted. 



'2. G. monosperma, Walt. Leaflets ovate or oblong; thorns mctlv 

 simple; legume short, obliquely oval, 1 -seeded, not pulpy. Deep river 

 swamps, Florida to Tennessee, and westward. July. A small tree. Legume 

 1' long. 



45. GYMNOCLADUS, Lam. COFFEE-TREE. 



Flowers polygamo-dicecious, tomentose. Calyx narrowly funnel-shaped, 

 5-cleft. Petals 5. Stamens 10, separate. Style long, exserted. Legume 

 woody, pulpy within, few-seeded, the seeds large, compressed. A slender 

 tree, with thick thornless branches, very large bipinnate leaves, and small 

 whitish flowers in axillary racemes. 



1. G. Canadensis, Lam. Rich woods, Tennessee, and northward. 

 May. Leaves 2 -3 long. Leaflets ovate, the lowest pair borne on the 

 common petiole, and larger. Legume 6' - 10' long, 2' wide, 6 - 8-seeded. 



46. OS3SALPINIA, L. 



Sepals unequal, united into a cup-shaped base. Petals 5, unequal, clawed. 

 Stamens 10, all fertile, the long filaments ascending, and hairy at the base. 

 Style filiform. Legume echinate or unarmed, compressed, wingless, 1 - many- 

 seeded. Trees or shrubs, with abruptly bipinnate leaves, and racemose 

 mostlv yellow flowers. 



1. C. pauciflora, Benth. & Hook. Glabrous, armed with rather stout 

 stipular and stipellate recurved spines ; pinna? 2-4 pairs; leaflets 3-5 pairs, 

 obovate, rounded at each end (4" - 5" long) ; racemes simple, loosely few- 

 flowered ; sepals obovate-oblong, little shorter than the yellow corolla and 

 the slightly exserted stamens ; legumes short, short-stipitnte, obliquely 

 acuminate, 1 - few-seeded. Big Pine Key, South Florida (Curtiss). A 

 low shrub. 



