2. T. stoloníferum, Muhl. (RUNNING BUFFALO-C.) Smooth, _perennial; stems with long runners_ from the base; _leaflets broadly obovate or obcordate_, minutely toothed; heads loose; flowers white, tinged with purple; pods 2-seeded.--Open woodlands and prairies, Ohio and Ky., west to Iowa and Kan. 3. T. rèpens, L. (WHITE C.) Smooth, perennial; the slender _stems spreading and creeping; leaflets inversely heart-shaped_ or merely notched, obscurely toothed; stipules scale-like, narrow; petioles and especially the peduncles very long; heads small and loose; _calyx much shorter than the white corolla_; pods about 4-seeded.--Fields and copses, everywhere. Indigenous only in the northern part of our range, if at all. 4. T. Caroliniànum, Michx. Somewhat pubescent small perennial, _procumbent, in tufts_; leaflets wedge-obovate and slightly notched; stipules ovate, foliaceous; heads small on slender peduncles; _calyx-teeth_ lanceolate, nearly _equalling the purplish corolla; standard pointed_; pods 4-seeded.--Waste ground near Philadelphia, south to Va., Fla., and Tex. T. HÝBRIDUM, L. (ALSIKE C.) Resembling T. repens, but the stems erect or ascending, not rooting at the nodes; flowers rose-tinted.--Becoming common. (Nat. from Eu.) [*][*][*] _Flowers short-pedicelled in close heads, reflexed when old; corolla yellow, persistent, turning dry and chestnut-brown with age, the standard becoming hood-shaped; annuals, fl. in summer._ T. AGRÀRIUM, L. (YELLOW or HOP-C.) Smoothish, somewhat upright (6--12´ high); _leaflets obovate-oblong, all three from the same point_ (palmate) and nearly sessile; _stipules narrow, cohering with the petiole for more than half its length_.--Sandy fields and roadsides; N. Scotia to Va.; also in western N. Y. (Nat. from Eu.) T. PROCÚMBENS, L. (LOW HOP-C.) Stems spreading or ascending, pubescent (3--6´ high); _leaflets wedge-obovate_, notched at the end, _the lateral at a small distance from the other_ (pinnately 3-foliolate); _stipules ovate, short_.--Sandy fields and roadsides, common.--Var. MÌNUS, Gray, has smaller heads, the standard not much striate with age. (Nat. from Eu.) 10. MELILÒTUS, Tourn. MELILOT. SWEET CLOVER. Flowers much as in Trifolium, but in spike-like racemes, small; corolla deciduous, free from the stamen-tube. Pod ovoid, coriaceous, wrinkled, longer than the calyx, scarcely dehiscent, 1--2-seeded.--Annual or biennial herbs, fragrant in drying, with pinnately 3-foliolate leaves, leaflets toothed. (Name from μέλι, _honey_, and λωτός, some leguminous plant.) M. OFFICINÀLIS, Willd. (YELLOW MELILOT.) Upright (2--4° high); leaflets obovate-oblong, obtuse; _corolla yellow_; the petals nearly of equal length.--Waste or cultivated grounds. (Adv. from Eu.) M. ÁLBA, Lam. (WHITE M.) Leaflets truncate; _corolla white_; the standard longer than the other petals.--In similar places. (Adv. from Eu.) 11. MEDICÀGO, Tourn. MEDICK.