102 LEGUMINOS^E. (PULSE FAMILY.) 



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

 large, long-petioled ; 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 stem, naked, or with one or two leaves near 

 the base, much longer than the stem ; leaves long-petioled, smooth ; leaflets 

 ovate, acute 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 diadelphous : legume sessile or short stipitate, 



* Stipules large, ovate (except No. 8), acuminate, persistent: leijume 3-G-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 hairv ; bracts 

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

 (Hedysarum scaberrimum, Ell.) Dry open woods, Florida to Mississippi, and 

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

 Leaflets 1^' 3' long. Flowers large. 



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

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

 above; racemes paniclcd, 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' lone:. Legume 1' long, pendulous. Flowers small. 



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

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

 and bracts large ; legume 4 - 6-jointed, the joints rhombic-oblong, connected by a 

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

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

 Legume l'-2' long. 



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

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

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

 3 -4-jointed, 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 leaves 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 2 -4-jointed, the stipe shorter than the calyx ; 

 joints obliquely obovatc. 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. Bracts and flowers small. 



