8 T. pratense L. Red Clover. Ascending, thinly hirsute; lfts. spotted, oval, entire; stip. ovate, cuspidate-acuminate; heads sessile; lower tooth of the cal. longer than the four others which are equal.- This is the common red clover so extensively cultivated in grass lands, with herds' grass (Phleum pratense) and other grasses, and often alone. Sts. several from the same root, hairy. Lvs. ter-nate, the lfts. ovate, lighter colored in the center, entire and nearly smooth. Fls. red, rarely white, sweet-scented. All Summer. § Eur.
9 T. medium L. Zig-zag Clover. St. suberect, branching, flexuous, nearly glabrous; lfts. not spotted, oblong or elliptical, subentire; stip. lanceolate, acuminate; hds. ovoid-gbbous, pedunculate; cal. teeth setaceous, hairy.- In meadows', Danvers, Mass. (Oakes). Hds. of fls. larger than in T. pratense. Cor. deep purple. Lvs. of a uniform green. § Eur.
10 T. incarnatum L. St. erect, flexuous; lfts. ovate-orbicular, obtuse or obcordate, sessile, crenate villous; spike dense, oblong, obtuse, pedunculate; cal. teeth setaceous, villous.- A fine species from Italy, occasionally cultivated as a border flower, and has been proposed (Dr. Dewey Rep. Herb. Pl. Mass.) for cultivation as a valuable plant for hay.
30. MEDICA'GO, L. Medick. (Gr. lucerne; from Media, its native country?) Calyx 5-cleft; corolla deciduous, vexillum free and remote from the keel; legume variously curved, or spirally coiled or twisted. - Herbs or shrubs with pinnately 3-foliate lvs.
* Pods smooth...................
Nos. 1, 2, 3.
** Pods spiny......................
Nos. 4, 5, 6.
1 M. lupuliua L. None-such. Procumbent, pubescent; lfts. obovate, obtuse, cu-neate at base; ped. much longer than the leaves, with an oblong spike of small yellow flowers; pods reniform, 1-seeded.- Fields and waste grounds, Can. to Fla. Sts. 6 to 20' long. Pods black when ripe, as large as a pin-head. May - Oct. §Eur.
2 M. sativa L. Lucerne. Erect, glabrous; lfts. oblong-oblanceolate, toothed above, mueronate; stip. lance-linear; ped. longer than the lvs., with an oblong rac. of large violet fls.; pods spirally twisted, reticulated. - Sts. 2 to 3f high, from a strong, deep root. Highly valued in Europe as a forage plant, with us sparingly cultivated. § Jn., Jl.
3 M. scutellata L. Snails. Lfts. elliptical, denticulate, the lower obovate; slip, ovate, dentate; ped. 1 to 3-flowered, shorter than the leaf; pods, snail-shaped. convex below, flat above, with about 6 concentric-spiral turns. - Gardens, among: flowers, cultivated for its curious pods resembling snail shells. Jl.
† § Eur.
4 M. denticulata Willd. Procumbent, glabrous; lfts. obovate, denticulate, and often emarginate above; stip. laciniate, setose; ped. 1 to 3-flowered, shorter than the leaves; pods loosely spiral, with 2 or 3 turns, flattened, strongly reticulated, the border echinate with a double row of hooked spines.- Waste grouuds, hero and there. Sts. 1 to 2f long. Fls. small (yellow in h. s.), purplish. Jn. § Eur.
5 M. interteaxta L. Hedgehog Lfts. rhomboidal, toothed; stip. laciniate; ped. about 2-flowered; leg. oval, 5 or 6-fold, spirally coiled, echinate, the margins bordered with setaceous, reflexed, appressed prickles. - Gardens, and occasionally spontaneous. Cultivated like No. 3, for its curious pods-
6 M. maculata Willd., with Ivs. marked with a purple spot, and pods compactly spiral, and echinate somewhat like No. 4, said to be naturalized South; we have not met with it, unless an imperfect specimen from Potsdam, N. Y., bo this plant Other species of this curious genus are occasionally found in gardens.
31. MELILO'TUS, Tourn. Melilot. (Lat. mel, honey, and lotus; in drying it exhales a sweet odor.) Calyx tabular, 5-toothed, persistent; corolla deciduous, keel petals completely united, shorter than the alae or vexillum; stamens diadelphous (9 & 1); legume rugous, longer than the calyx, 1 to few-seeded. - Genus taken from Trifolium. Lvs. pinnately trifoliate, veins of the lfts. simple or forked. Fls. in racemes.
1 M. officinalis Willd. St. erect, with spreading branches; lfts. obovate-oblong, obtuse, dentate; rac. spicate, axillary, paniculate, loose; cal. half as long as the yellow corolla; leg. 2-seeded, ovoid. - Alluvial meadows. St. sulcate, about 3f high. Lfts. smooth, with remote, mucronate teeth. Fls. in long, 1-sided, slender racemes; petals of nearly equal length. The whole plant is sweet-scented. Jn. § Eur.
2 M. alba Lam. Sweet-scented Clover. White Melilot. St. erect, branched, lfts. ovate-oblong, truncate and mucronate at the apex, remotely serrate; stip. setaceous; cal. less than half as long as the white cor.; leg. 2-seeded, ovoid.-
Alluvial soils. St. robust, very branching, sulcate, 4 to 6f high. Lfts. 1 to 2' long, more obtuse at the apex than at base, mucronately serrate. Fls. numerous, the racemes more loose and longer than in the last. Petals unequal.; banner longer than wings or keel. Tory fragrant when dried. Jl., Aug. § † Eur.
32. PSORA'LEA. (Gr. leprous or scaly; alluding to the glandular dots.) Calyx 5-cleft, campanulate; segments acuminate, lower one longest; stamens diadelphous, rarely somewhat monadelphous; legumes as long as the calyx, 1-seeded, indchiscent. - or