104 LEGUMINOSiE. (PULSE FAMILY.) 



IT. D. Marilandicum, Boott. Stem erect, smooth, mostly simple; 

 leaflets small, ovate or roundish, obtuse, smooth, pale beneath, commonly short- 

 er than the petiole; panicle rough; legume mostly 2-jointed. — (II. obtnsnm, 

 Ell.) — Dry open woods, Florida and northward. August. — Stem 2° - 3° high. 

 Leaflets rarely more than 1' long, sometimes oblong. 



18. D. ciliare, DC Very much like No. 17, but the stem and leaves 

 rough-hairy, and the (sometimes acute) leaflets longer than the short petiole. — 

 With the preceding. 



19. D. rigidum, DC. Stem erect, branched, rough-puhescent ; leaflets 

 (pale) oval or oblong, obtuse, rough above, hairy beneath, strongly reticulated 

 on both sides; panicle ample, leafy below; legume mostly 3-jointed. — Dry 

 woods, Florida to North Carolina, and northward. August. — Stems 2° - 3° 

 high. Leaflets l'-S' long. Joints of the legume largest of this section. 



20. D. lineatum, DC. Stem prostrate, slender, smooth ; leaflets oval or 

 roundish, smooth ; racemes elongated, axillary and terminal, simple or panicu- 

 late, rough ; legume 2 -3-jointed. — Open grassy pine barrens, Florida to North 

 Carolina, and westward. August. — Stem 1°- 2° long. Leaflets seldom more 

 than 1' long, liacemes 1°- 2° long. 



26. RHYNCHOSIA, DC. 



Calyx 2-lipped, with the upper lip 2-cleft and the lower 3-partcd, or nearly 

 equally 4-parted. Stamens diadelphous (9 & 1). Style smooth, subulate. Leg- 

 ume oblong or scymitar-shaped, mostly 1 -2-secdcd. Seeds carunculate. — En 1 1 

 or twining herbs or shruhs, with 1 or 3-foliolate, mostly softly-pubescent anil resi- 

 nous-dotted leaves, and axillary yellow flowers. 



* /Stems twining, or low and erect: Jlowers in axillary racemes. 



-»- Calyx somewhat 2-lipped, 4-cleJl ; the teeth subulate, shorter than the corolla, the 



lowest one longest: stems twining. 



1. R. minima, DC. Tomentose ; leaflets small, roundish or broadly 

 rhombic, barely acute, dotted beneath ; stipules subulate ; racemes filiform, much 



longer than the leaves, loosely 6 - 12-flowered ; flowers minute, rellexed ; legume 

 scymitar-shaped. (Glycine reflexa, Ell.) — Damp soil along the coast, Key 

 West to South Carolina, and westward. July. — Leaflets h'-l' long. 



2. R. parvifolia, DC. Velvety throughout ; leaflets ovate, oblong, or 

 obovate-oblong, obtuse, or the upper ones acute, hoary and Btrongly reticulate 

 beneath, longer than the petiole; stipules small, lanceolate; racen.es equalling 

 or longer than the leaves, slender, loosely 3-5-flowered; lowest tooth of the 

 calyx nearly twice the length of the others; legume oblong, obtuse, clothed with 

 soft down and longer hairs intermixed, 2-8-seeded. - South Florida.- Stem 

 l°-2° long. Leaflets I' long. 



3. R. Caribcea, DC. Velvety throughout ; stem prostrate or twining; 

 leaflets thin, ovate, acute or slightlj acuminate ; stipules ovate ; racemes Blender, 

 shorter than the leavi -. I lj 8 - B flowered ; teeth of the calyx short, nearly 



