26 LEGUMINOSiE, 



8talks : stipules foliaceous, semilanceolate, acuminate ; leaflets narrowly 

 oblong, acute, % — l^g in. long, serrulate : heads round-ovate or ovate, 

 % in. in diameter ; calyx-teeth white-villous, little shorter than the 

 slender white (sometimes purplish) corolla. — In the high Sierra, from 

 Mono Lake northward. About Lake Tahoe occurs a dwarf form with 

 reddish flowers. In Trinity Mts., Humboldt Co., occurs an excessively 

 tall form approaching T. piumosum in size and shape of the heads. 



15. T. inacrocephaluiii, Poir. Suppl. v. 336 (1817) ; Pursh. Fl. ii. 479. 

 t. 23 (1814), under Lupinaxter : T. viegacephalum, Nutt. Gen. ii. 105 (1818). 

 Erect or ascending, y^ — 1 ft. high, stoutish, pubescent : stipules large, 

 foliaceous ; leaflets 5 — 7, oblong-cuneiform, mucronate, sharply and 

 closely denticulate : head solitary, terminal, ovate-globose, 2 in. high : 

 calyx-tube short, campanulate ; the filiform teeth very long, densely 

 plumose : corolla % in. long, pale yellow and red : pod 2-seeded ; seed 

 pale and smooth. — A peculiar very handsome species of northern districts; 

 reaching our borders in Plumas Co., Lenution. Apr. May. 



16. T. Andersouii, Gray, Proc. Am. Acad, vi, 522 (1865). Dwarf, cespi- 

 tose, the short depressed branching stems very stout and leafy, the whole 

 j)lant densely silky-villous : stipules lanceolate, entire : leaflets cuneate- 

 oblong, % in. long, acute, almost entire : peduncles axillary ; umbels 

 depressed -globose ; fl. '^4, i^i- long, purplish ; calyx-teeth little shorter 

 than the petals : pod tomentose, 2-seeded. Plumas Co., Levrmov, and 

 eastward in Nevada. 



•M- -M- Annuals. 



17. T. Macraei, H. & A. Bot. Misc. iii. 179 (1833). Much branched, 

 decumbent or almost prostrate, the slender branches 8 — 18 in. long, the 

 herbage more or less villous- or pilose-pubescent : stip^^les broadly ovate, 

 abruptly acuminate ; leaflets cuneate-oblong, obtuse, denticulate above 

 the middle, 6 — 10 lines long : heads nearly or quite sessile, Tisually in a 

 terminal pair, ovate, I4' — i^ i^- hi^li ; calyx-teeth longer than the tube, 

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

 1-seeded. Var. albopurpureuin. T. aJhopvrp^irenm, T. & G, Fl. i. 318, 

 Often 1 — 1?'2 ft. high, ascending ; 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. — The true T. Macrn'i is Chilian, and is said to have lance- 

 olate-acuminate entire stipules. No such stipules are found in our Oali- 

 fornian plant : and the plant above described comes nearest to it and 

 seems to occur only on the San Francisco peninsula, where it is common 

 on rocky or sandy slopes and hill-tops. The variety abounds almost 

 throughout the State, running into many forms, some of which resemble 

 the next. May, June. 



18. T. (lichotomuin, H. .t A. Bot. Beech. 880 (1840) ; T. Ncohigopm^ 



