leguminosjE. 95 



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

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

 decipiens, Greene. Taller and stouter, the leaflets cuneate-oblong 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. ciliolatmn, Benth. Erect, 1 — 2 ft. high, glabrous: stipules 

 narrow, acuminate; leaflets cuneate-oblong or obovate, % — 1 i n - long, 

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

 very acute, rigidly ciliolaie. — Throughout the western part of the State, 

 both seaward and in the interior. April — June. 



4. T. peooumbens, 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. eepbns, Eivinus, (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— +- Flowers nearly or quite sessile, not reflexed; calyx-teelh-elongated, 

 plumose, or at least hairy. 



++ Perennial. 



6. T. pbatense, 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- Annuals. 



7. T. Macrici, Hook & Am. 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, J£ — % in- high; calyx-teeth longer than the lube, 

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

 1-seeded. Var. albopurpurenin, Greene. Often 1—lJ^ 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. 



