102 LEGUMINOS.E. (PULSE FAMILY.) 



2. D. acuminatum, DC. Stem pubescent, leafy at the summit ; leaves 

 large, long-pctiolcd j leaflets smoothish, ovate or roundish, acuminate; raceme 

 or panicle terminal, long-peduncled, many-flowered. — Rich shady soil, Florida 

 to Mississippi, and northward. July and August. — Plant 2° - 3° high. Leaf- 

 lets thin, 2'- 4' long. 



3. D. nudiflorum, DC. Stem smooth, short, leafy at the summit ; pan- 

 icle ascending from the base of the stein, naked, or with one or two leaves near 

 the base, mncfa Longer than the stem; leaves long-petioled, smooth; leaflets 

 ovale, aeutc or obtuse, white beneath ; legume long-stipitate. — Rich woods, 

 Florida to Mississippi, and northward. July and August. — Stem 6'- 12' high. 

 Racemes simple or compound, on peduncles 2° -3° high. 



§ 2. Stamens diadelphons: legume sessile or short stipitdte. 



* Stipules large, orate [except No. 8), acuminate, persistent: legume 3 - 6-jointed, 



the joints convex on the upper suture, rounded on the lower one. 



4. D. canescens, DC. Stem tall, rough-hairy, striate ; leaflets ovate, 

 mostly acute, very rough, especially beneath; panicle large, very hairy; bracts 

 large, ovate, acuminate; joints of the legume 3 -5, connected by a broad neck. 

 (Hcdysarnm scabcrrimum, Ell.) — Dry open woods, Florida to Mississippi, and 

 northward. July and August. — Plant 3° - 5° high, much branched, pale green. 

 Leaflets l.V-3' long. Flowers large. 



5. D. molle, DC? Stem tall, much branched, softly pubescent; leaflets 

 rhombic or elliptical, obtuse and often cmarginatc, tomentose beneath, rough 

 above; racemes pan icled, slender; flowers 2-3 together, on slender pedicels; 

 legume nearly sessile, black ; the small joints oval or rhombic, equally con- 

 vex on both sutures. — Waste places, Middle Florida. Sept. — Stem 3°-5° 

 high. Leaflets 3' -4' long. Legume 1' long, pendulous. Flowers small. 



B. D. CUSpidatum, Torr. & Gray. Stem smooth, erect ; leaves smooth, 

 ovate or lanceolate-ovate, acuminate ; panicle mostly simple, elongated ; flowers 

 and bracts large ; Ugume 4-G-jointed, the joints rhombic-oblong, connected by a 

 broad neck. (H. brncteosum, Michx.) — Dry open woods, Florida to Mississippi, 

 and northward. July and August. — Stem 3° -5° high. Leaflets 3'- 5' long. 

 Legnme \h' -t>' long. 



7. D. viridiflorum, Beck. Stem stout, tomentose, roogh above; leaves 

 large ; leaflets ovate or roundish, obtuse, very rough above, pale and velvety 

 beneath : stipules ovate, acuminate, rather small ; panicle large, leafless ; legume 

 9 -4-jointcd, on a stipe twice as long as the calyx, the joints half orbicular, con- 

 nected by a narrow neck. — Rich open woods, Florida to Mississippi, and north- 

 ward. August.— Stem 3° -4° high. Leaflets 2' -4' long. Corolla turning 

 greenish. 



8. D. Floridanum, n. sp. Stem short, rigid, very rough ; lower leavei 1- 

 foliolate ; leaflets lanceolate-ovate, acute or obtuse, very rough above, pubescent 

 and strongly reticulate beneath ; stipules lance-subulate ; panicle elongated, spar- 

 ingly branched, leafless ; legume 12 - 4-jointed. the stipe shorter than the calyx; 

 [pints obliquely obovate. — Dry sandy soil, Apalachicola, Florida. July and 

 August.— Proper stem 1° high, the panicle 2° - 3°. Leaflets 2' -3' long, the 

 stipules and stipels rigid. liracts and flowers small. 



