2. P. stipulàta, Torr. & Gray. Nearly smooth and glandless; _stems diffuse; leaflets ovate-elliptical_, reticulated; _stipules ovate; flowers in heads_ on rather short peduncles; _bracts broadly ovate, sharp-pointed_.--Rocks, S. Ind. and Ky. June, July. 3. P. melilotoìdes, Michx. Somewhat pubescent, more or less glandular; _stems erect_ (1--2° high), slender; _leaflets lanceolate or narrowly oblong; spikes oblong_, long-peduncled; _stipules awl-shaped_; bracts ovate or lanceolate, taper-pointed; pods strongly wrinkled transversely.--Dry soil, Fla. to Tenn., S. Ind. and Kan. June. [*][*] _Leaves palmately 3--5-foliolate; roots not tuberous._ 4. P. tenuiflòra, Pursh. Slender, erect, much branched and bushy (2--4° high), _minutely hoary-pubescent_ when young; leaflets varying from linear to obovate-oblong (½--1½´ long), glandular-dotted; _flowers_ (2--3´´ long) _in loose racemes_; lobes of the calyx and bracts ovate, acute; pod glandular. (P. floribunda, _Nutt._)--Prairies, Minn. to Ill., Tex., and westward. June--Sept. 5. P. argophýlla, Pursh. _Silvery silky-white_ all over, erect, divergently branched (1--3° high); leaflets _elliptical-lanceolate; spikes interrupted_; lobes of the calyx and _bracts lanceolate_.--High plains, N. Wisc. to Iowa, Kan., and westward. June.--Flowers 4--5´´ long. 6. P. digitàta, Nutt. More slender and less hoary, 1--2° high; leaflets linear-oblanceolate; bracts of the interrupted spike obcordate; calyx-lobes oblong, acute.--Central Kan. to Col. and Tex. 7. P. lanceolàta, Pursh. Glabrous or nearly so, yellowish green, densely punctate; leaflets 3, linear to oblanceolate; flowers small, in very short spikes; calyx 1´´ long, with short broad teeth.--Central Kan. to the Sask. and westward. [*][*][*] _Leaves palmately 5-foliolate; root tuberous; spike-like racemes dense._ 8. P. esculénta, Pursh. Roughish hairy all over; stem stout (5--15´ high) and erect from a tuberous or turnip-shaped farinaceous root; leaflets obovate- or lanceolate-oblong; spikes oblong, long-peduncled; lobes of the calyx and bracts lanceolate, nearly equalling the corolla (½´ long).--High plains, Sask. to Wisc., Iowa, and Tex. June. The POMME BLANCHE, or POMME DE PRAIRIE, of the voyageurs. 9. P. hypogæ̀a, Nutt. Tuber small; nearly acaulescent, hoary with appressed hairs; leaflets linear; spikes short-capitate, on peduncles ½--2´ long; calyx narrow, 3--6´´ long.--Central Kan. to Col. and Tex. 10. P. cuspidàta, Pursh. Stout, tall, from a deep-seated tuber, hoary with appressed hairs; leaflets usually broadly oblanceolate, obtuse; flowers large, the petals (6--8´´ long) exceeding the lanceolate-lobed calyx.--Central Kan. to Col. and Tex. 14. AMÓRPHA, L. FALSE INDIGO.