LEGUMINOSa:. 99 



■h— i— Corolla more or less inflated in age. 



22. T. barbigeriim, Torr. Branches stout, with short internodes, 

 nearly prostrate, 4 — 10 in. long; herbage deep green, soft-pubescent: 

 petioles elongated; leaflets broadly obovate, obtuse, denticulate, ^ in. 

 long or less: involucre as broad as the long-peduncled heads, 4 — 8 lines 

 wide, shortly lobed and setaceously toothed: calyx-tube short, thin and 

 at length scarious; teeth selaceous-awned, plumose, sometimes 2 — 3 

 parted, usually exceeding the small purple corolla: pod 2-seeded. — 

 Frequent at Berkeley, San Francisco, etc. 



23. T. Grayi, Loja. Erect, stout, with long internodes, 1—2 ft. high, 

 sparingly branched, villous with long spreading hairs: leaflets 1 in. long, 

 cuneate-oblong or elliptic-lanceolate, obtuse or acutish, sharply serrulate : 

 heads long-peduncled, 1 in. broad; the involucre as broad: calyx- tube 

 scarious, villous, 10-nerved; teeth linear-subulate from a triangular base, 

 plumose, as long as the dark red-purple corolla. — Marin Co. 



24. T. fucatum, Lindl. Branches stout and somewhat fistulous, 

 often a foot long: leaflets 1 in. long, rhombic-obovate rather conspic- 

 uously spinulose-serrate or -dentate, in texture somewhat succulent: 

 heads 1J£ — 2 in. broad, 13 — 20-flowered: fl. 1 in. long or more; calyx- 

 tube campanulate, \% lines long; none of the teeth as long as the tube, 

 all triangular, the two upper short and acute, the three lower tapering to a 

 setaceous point; corolla cream-color, with a slight greenish tinge, fading 

 pinkish, the keel-petals with a dark purple spot; legume rather long- 

 stipitate.— In low meadow lands; most frequent near the Bay. 



25. T. flavnlnm, Greene. Pale green and glaucescent, stoutish, 

 often larger than the last but heads not half as large: leaflets % — H 

 inch long, broadly obovate, from pectinate-denticulate to entire : heads 

 J^ — 1 inch broad, 5 — 12-flowered: flower seldom J£ inch long: calyx-tube 

 a line long, the shortest of the teeth decidedly longer, the 3 lower about 

 twice as long, all slender-subulate from a broad base: legume subsessile. 

 —More common than the last; usually on higher ground. 



26. T. virescens, Greene. Near the two preceding, but slender and 

 half as large: leaflets inverse-deltoid, broadest at summit and truncate, 

 sharply serrulate: slender peduncles twice the length of the leaves: 

 heads less than 1 in. broad: calyx-teeth all slender-subulate, the two upper 

 shorter than the tube, closely approximate, the lower twice the length of the 

 lube: corolla greenish-yellow, 7 — 8 lines long. — Mountains and valleys 

 of Marin and Sonoma counties. 



27. T. Gambelii, Nutt. A span high, scarcely branching: long- 

 peduncled heads usually only 3— 5-flowered: upper calyx-teeth subulate, 

 the lower much larger, ,each cleft into 5 — 7 long setaceous segments. — Hills 

 at the eastern base of Mt. Diablo. 



