LEGUMINOSJE. (PULSE FAMILY.) 103 
9. D. rotundifolium, DC. Stem long, trailing, hairy ; leaflets orbicu- 
lar, pubescent; stipules ovate, large, reflexed ; racemes simple, the terminal 
ones panicled; lobes of the calyx longer than the tube; legume 2 - 4,jointed, 
very adhesive, the large joints half-rhombic. — Dry open woods, Florida to Mis- 
sissippi, and northward. August. — Stem 3°-5° long. Flowers showy, occa- 
sionally yellowish-white. 
* * Stipules subulate, deciduous: legume 3 — 5-jointed, nearly straight on the upper 
suture, the joints triangular, rarely rounded on the lower suture. 
: 10. D. Canadense, DC. Stem erect, hairy; leaves short-petioled ; leaf- 
lets oblong-lanceolate, more or less hairy; panicle leafy ; flowers and bracts 
large; legume with 3—4 rather large obtusely 3-angled joints. — Dry woods, 
North Carolina, and northward. August. — Stem 29 - 39 high, furrowed. Up- 
per leaves subsessile. 
1l. D. Dillenii, Darl. Stem erect, furrowed, hairy; leaflets oblong or 
ovate-oblong, obtuse, smoothish above, paler and pubescent beneath ; panicle 
large, leafless, rough; joints of the legume 3-4, triangular. (H. Marilandi- 
cum, Ell.) Open woods, Florida and northward. August.— Stem 29-3? 
high. Leaflets 1 -2']long. Bracts and flowers small. 
12. D. glabellum, DC. Stem erect, nearly glabrous; leaflets small, 
ovate, obtuse, scabrous-pubescent on both sides; joints of the legume about 4, 
triangular, minutely hispid. — In shady places, North and South Carolina. — 
Resembles D. Marilandicum in foliage and D. paniculatum in fruit. 
13. D. levigatum, DC. Stem smooth, terete; leaflets thick, ovate, ob- 
tuse, smooth, or slightly pubescent and paler beneath; panicle leafless, rough ; 
joints of the legume 3-4, triangular. (H. rhombifolium, Ell.) — Dry rich 
soil, Florida to Mississippi, and northward. August. — Stem 2°-4° high. 
Leaflets 1/ — 2' long, the lateral ones occasionally wanting. 
14. D. panieulatum, DC. Stem slender, mostly smooth, with long and 
virgate branches; leaflets varying from oblong to linear-lanceolate, obtuse, 
smooth or slightly pubescent; legume 3- 5-jointed, the joints triangular. — 
Shady woods, Florida to Mississippi, and northward. August. — Stem 2°-4° 
high. Leaflets rather rigid. ! 
* * * Stipules subulate, deciduous: legume 2 -3-jointed ; the joints soll oval, or 
obliquely-obovate ; flowers small. 
15. D. tenuifolium, Torr. & Gray. Stem slender, erect, Fodgh-pubte- 
cent above ; leaflets linear, reticulated, obtuse, smooth above, keeled, much longer 
than the short petiole; panicle leafless, very rough; flowers small; legume ses- 
sile, mostly 23ointed. — Dry pine barrens, Florida to North Carolina. July and 
August. — Stem 29 39 high. Leaflets 2! — 3' long. 
16. D. strictum, DC. Stem erect, mostly simple, straight and slender, 
smooth or roughish ; leaves on slender petioles; leaflets narrowly linear, rather 
obtuse, coriaceous, reticulated, nearly smooth ; panicle virgate, few-flowered; the - 
pedicels very slender ; legume stipitate, 1-3-jointed. — Pine barrens, Florida to 
A Mater sud onini. bie tto comete ; 
