2. D. acuminàtum, DC. _Leaves all crowded at the summit of the stem from which arises the elongated naked raceme or panicle_; leaflets round-ovate, taper-pointed, green both sides, the end one round (4--5´ long).--Rich woods, from Canada to the Gulf. 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._ [+] _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.