[+] Pods of 4–7 unequal-sided rhombic joints, which are considerably longer than broad (about 6´´ long).
7. D. canéscens, DC. Stem loosely branched, hairy; leaflets ovate, bluntish, about the length of the petioles, whitish and reticulated beneath, both sides roughish with a close fine pubescence; joints of the pod very adhesive.—Moist grounds, Mass. and Vt. to Minn. and southward, chiefly westward. Branches clothed with both minute and hooked, and longer, spreading, rather glutinous hairs.—Var. villosíssimum, Torr. & Gray, has the panicle and upper part of the stem very villous, and leaflets oblong-ovate.—Mo.
8. D. cuspidàtum, Torr. & Gray. Very smooth except the panicle; stem straight; leaflets lanceolate-ovate and taper-pointed, green both sides, longer than the petiole (3–5´); joints of the pod rhomboid-oblong, smoothish.—Thickets, common. The conspicuous bracts and stipules ¾´ long.
[+][+] Pods of 3–5 oval joints (not over 3´´ long).
9. D. Illinoénse, Gray. Erect (3–5° high); stem and leaves with short rough pubescence; leaflets ovate-oblong or ovate-lanceolate (2–4´ long), obtuse, subcoriaceous, cinereous beneath, veins and veinlets prominent, strongly reticulated, the lower leaflets nearly equalling the petiole; pods scarcely over 1´ long, sinuate on both margins (deeper below).—Dry ground, Ill. to Iowa and Kan.
[*][*] Stems (2–5° high) erect; stipules and bracts mostly deciduous, small and inconspicuous; joints of the pod 3–5, triangular or half-rhombic or very unequal-sided rhomboidal, longer than broad, 3´´ or less in length; flowers middle-sized.
10. D. lævigàtum, DC. Smooth or nearly so throughout; stem straight; leaflets ovate, bluntish, pale beneath (2–3´ long); panicles minutely rough-pubescent.—Pine woods, N. J. to Fla., west to Mo. and Tex.
11. D. viridiflòrum, Beck. Stem very downy, rough at the summit; leaflets broadly ovate, very obtuse, rough above, whitened with a soft velvety down underneath (2–3´ long).—Southern N. Y. to N. J. and Fla., west to Mich., Mo., and Tex.
12. D. Dillènii, Darlingt. Stem pubescent; leaflets oblong or oblong-ovate, commonly bluntish, pale beneath, softly and finely pubescent, mostly thin (2–3´ long).—Open woodlands, common.
13. D. paniculàtum, DC. Nearly smooth throughout; stem slender, tall; leaflets oblong-lanceolate, or narrowly lanceolate, tapering to a blunt point, thin (3–5´ long); racemes much panicled.—Copses, common.