3. D. pauciflòrum, DC. Leaves scattered along the low (8–15´ high) ascending stems; leaflets rhombic-ovate, bluntish, pale beneath; raceme few-flowered, terminal.—Woods, Ont. to Penn., Mich., Kan., and southward.
§ 2. Pod raised on a stalk (stipe) little if at all surpassing the deeply deft calyx; stems long and prostrate or decumbent; racemes axillary and terminal.
[*] Stipules conspicuous, ovate, attenuate, striate, persistent; racemes mostly simple.
4. D. rotundifòlium, DC. Soft-hairy all over, truly prostrate; leaflets orbicular, or the odd one slightly rhomboid; flowers purple; pods almost equally sinuate on both edges, 3–5-jointed; the joints rhomboid-oval.—Dry rocky woods, N. Eng. to Fla., west to Minn., Mo., and La.
Var. glabràtum, Gray, is almost glabrous, otherwise nearly as the ordinary form.—Mass. and N. Y.
5. D. ochroleùcum, M. A. Curtis. Stems sparsely hairy, decumbent; leaflets nearly glabrous, ovate, acute or obtuse, transversely reticulated beneath, the lateral ones smaller or sometimes wanting; racemes much elongated; corolla whitish; pods twisted, 2–4-jointed, the large rhomboid joints smooth and reticulated but the margins downy.—Woodlands, Md. and Va.
[*][*] Stipules smaller, lanceolate and awl-shaped, less persistent; racemes panicled.
6. D. humifùsum, Beck. Glabrous or nearly so, procumbent; leaflets ovate or ovate-oblong, rather obtuse, much smaller than in the two preceding (1¼–2´ long), corolla purple; pods 2–4-jointed, flat, the oval-rhomboid joints minutely scabrous throughout.—Dry sandy soil, S. Penn. to Md.
§ 3. Pod slightly if at all stalked in the calyx; racemes panicled.
[*] Stems tall (3–5°) and erect; the persistent stipules and deciduous bracts large and conspicuous, ovate or ovate-lanceolate, taper-pointed; flowers rather large.