104 LEGUMINOSJ. (PULSE FAMILY.) 
17. 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. — (H. obtusum, 
Ell.) — Dry open woods, Florida and northward. August. — Stem 29 - 8° 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-pubescent ; 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 1' —3'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. Racemes 1°- 2° long. 
26. RHYNCHOSIA, DC. 
Calyx 2-lipped, with the upper lip 2-cleft and the lower 3-parted, or nearly 
equally 4-parted. Stamens diadelphous (9 & 1). Style smooth, subulate. Leg- 
ume oblong or scymitar-shaped, mostly 1-2-seeded. Seeds carunculate. — Erect 
or twining herbs or shrubs, with 1 or 3-foliolate, mostly softly-pubeseent and resi- 
nous-dotted leaves, and axillary yellow flowers. 
* Stems twining, or low and erect: flowers in axillary racemes. 
+ Calyx somewhat 2-lipped, 4-cleft ; 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 beneatlr; stipules subulate ; racemes filiform, much 
longer than the leaves, loosely 6 - 12-flowered ; flowers minute, reflexed ; legume 
scymitar-shaped. (Glycine reflexa, Ell.) Damp soil along the coast, Key 
West to South Carolina, and westward. July.— Leaflets J' — 1' long. 
2. R. parvifolia, DC. Velvety throughout; leaflets ovate, oblong, or 
obovate-oblong, obtuse, or the upper ones acute, hoary and strongly reticulate 
beneath, longer than the petiole ; stipules small, lanceolate; racemes 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—3-seeded. — South Florida. — Steni 
1°-2° long. Leaflets V long. 
3. R. Caribeea, DC. Velvety. desiinhenh = stem prostrate or ining 
leaflets thin, ovate, acute or slightly acuminate ; stipules ovate ; racemes slender, - 
shorter than the — ox et Hit MH 
