LEGUMINOS^:. 95 



teeth subulate-setaceous, about equalling tlie minute pale rose-colored 

 corolla: pod 1-seeded: seed rather narrowly obovate-oblong. Var. 

 (lecipiens, Greene. Taller and stouter, the leaflets cuneate-ablong with 

 closely serrulate margins aud only a shallow 'notch at apex; heads 

 15 30-flowered. The type is frequent between San Jose and Vacaville, 

 mostly within or to the eastward of the Mt. Diablo range. Only the 

 variety is found about the Bay. April June. 



3. T. ciliolatnm, Benth. Erect, 1 2 ft. high, glabrous: stipules 

 narrow, acuminate; leaflets cuneate-oblong or obovate, ^1 in. long, 

 obtuse or retuse, serrulate: fl. purple, 3 lines long; calyx-teeth lanceolate, 

 very acute, rigidly ciliolale. Throughout the western part of the State, 

 both seaward and in the interior. April June. 



4. T. PROCUMBENS, L. Ascending or suberect, slender, pubescent: 

 leaflets cuneate-oblong, emarginate, denticulate, the terminal one on a 

 longer stalklet: heads ovate or oblong, very dense; fl. yellow; banner 

 deflexed over the other petals in age. A small Old World clover, begin- 

 ning to appear spontaneously with us. 



5. T. REPENS, Rivinus, (1690). Perennial, diffuse, creeping, sending 

 up erect long-stalked glabrous leaves and heads: leaflets obcordate, 

 denticulate: heads depressed-globose, at length umbellate: fl. white; calyx- 

 teeth unequal, lanceolate-subulate, shorter than the tube: pod about 

 4 seeded. The White Clover of eastern and European meadows and 

 pastures; a troublesome plant in lawns with us; sparingly naturalized. 



i- -f Flowers nearly or quite sessile, not reflexed; calyx-teeth-elongated, 

 plumose, or at least hairy. 



M- Perennial. 



6. T. PRATENSE, Tragus, (1552). Stoutish, ascending, 1 ft. high, 

 pubescent: leaflets oval or obovate, often retuse, 1 in. long: heads ovate, 

 1 in. long, sessile: corolla elongated-tubular, rose-purple. The Red Clover 

 of eastern and Old World meadows; occasionally spontaneous with us. 



M- -M- Annuals. 



7. T. Macreei, Hook & Arn. Much branched, decumbent or almost 

 prostrate, the slender branches 8 18 in. long, the herbage more or less 

 villous- or pilose-pubescent: leaflets cuneate-oblong, obtuse, denticulate 

 above the middle, 6 10 lines long: heads nearly or guile sessile, usually 

 in a terminal pair, ovate, % % in. high; calyx-teeth longer than the tube, 

 densely plumose-hairy, nearly equalling the small purplish corolla: pod 

 1-seeded. Var. albopurpurenm, Greene. Often 11^ ft. high, ascend- 

 ing; heads small, ovate-conical or sub-cylindrical, solitary at the ends of 

 very long slender peduncles; calyx-teeth slender, more delicately plumose, 

 fully equalling the white-tipped purple corolla. Common and variable. 



