LEGUMINOS^E. (PULSE FAMILY.) 109 



larv clusters. Dry sandy pine barrens, near the west coast of Florida. June- 

 August. Stem 2 - 4 long. Leaflets 1 ' - 2' long. Flowers largest of all. 



5. G. glabella, Michx. Stem prostrate, minutely pubescent ; leaflets 

 rather rigid, on short petioles, oblong, rarely acute, smooth and shining above, 

 slightly hairy beneath ; racemes seldom as long as the leaves, 3 - 6-flowered ; 

 style elongated ; legume slightly falcate, at length smoothish, 4 - 6-seeded. 

 Dry pine barrens, Florida to Mississippi, and northward. July and August. 

 Stems 2 - 3 long. Leaflets 1' long. Flowers large, reddish-purple. 



* * Leaves trifoliolute, with nearly sessile leaflets : stems erect. 



6. G. brachypoda, Torr.&Gray. Stems slender, branching, and, as well 

 as the leaves and peduncles, smoothish ; leaves long petioled ; leaflets oblong, 

 obtuse ; flowers few, somewhat clustered at the summit of the slender peduncle ; 

 calyx woolly. Dry sandy ridges in the pine barrens of Middle Florida. July 

 and August. Stems 1 - 1 high. Leaflets shorter than the petiole. Flowers 

 small, purple. 



7. G. sessiliflora, Torr. & Gray. Stem short, smooth, simple; leaflets 

 . oblong or linear-oblong, obtuse, smooth on both sides ; flowers crowded in nearly 



sessile axillary clusters ; calyx hairy. Dry pine barrens, Florida to North 

 Carolina. June- August. Stem 6'- 12' high. Flowers white. Legume ob- 

 long-linear, tomentosc, 6 8-scedcd. 



* * * Leaves pinnate : stems tunning. 



8. G. Elliottii, Nutt. Leaflets 7-9, elliptical-oblong, emarginate, nearly 

 smooth and shining above, pubescent beneath ; racemes longer than the leaves, 

 few-flowered near the summit of the peduncle ; corolla white tinged with red ; 

 legume compressed, villous, falcate, 3- 5-sccded. Dry soil, Florida to South 

 Carolina, near the coast. May and June. Plant sometimes silky throughout. 



35. CA3STAVALIA, DC. 



Calyx tubular, 2-lipped ; the upper lip larger, with 2 rounded lobes, the lower 

 entire or 2-cleft. Vexillum large, orbicular, with 2 ridges within ; keel incurved. 

 Stamens monadelphous. Legume oblong-linear, compressed ; the valves with a 

 longitudinal ridge near the thickened upper suture. Seeds separated by inter- 

 posed cellular tissue : hilum linear. Prostrate or twining herbs, with trifoliolatc 

 leaves, and showy flowers in axillary racemes. 



1. C. obtusifolia, DC. Smoothish; stem long, prostrate*; leaflets thick, 

 oval or orbicular, pointless ; racemes stout, longer than the leaves, 6 - 8-flowered ; 

 flowers rose-color; legume 6-seeded. (C. rosea and C. miniata, DC.) Sandy 

 shores of St. Vincent's Island, Florida, and southward. July Sept. Stem 

 10 -15 long. Leaflets 3' long. Legume 4' -5' long, 1' wide. Seeds brown. 



36. DOLICHOS, L. 



Calyx campanulate, somewhat 2-lipped, the upper lip of two more or less 

 united teeth, the lower 3-cleft. Vexillum callous near the base. Keel more or 

 less falcate. Stamens diadelphous, the free stamen spurred at the. base. Style 

 10 



