304 LEGUMINOSAE 



Locs. — Big Prospector Mdw., Jcpson 7254; Sheep Mt., Jepson 7331; McAfee Mdw., Duran 

 2826. 



Eefs. — TRirouuM monoense Greene, Erythea 2:181 (1894), type loc. White Mt8., Shockley 

 460; Jepson, Man. 544 (1925), T. andersonii f. monoense McDer. N. Am. Sp. Trifolium 185, pi. 

 73 (1910). 



24. T. andersonii Gray. Range Clover. Caespitose dwarf 2 to 4 inches high, 

 forming dense leafy tufts or mats on the stout root-cro\vn; branches of the root- 

 crown sheathed with membranous stipules; herbage densely silky- or rusty-villous; 

 leaflets obovate to oblanceolate, 4 to 7 (or 11) lines long, abruptly short-acute or 

 mucronate, entire or nearly so; peduncles mostly axillary, shorter than the leaves; 

 heads subglobose, % to 1^/4 inches broad, subtended by a scarious vestige of an 

 involucre; flowers 6 to 8 lines long; calyx-teeth filiform, plumose, a little shorter 

 than the petals; corolla purplish; pods tomentose, about 5-ovuled, 1 or 2-seeded. 



Sand}' soil of plains or flats in the mountains, 3500 to 8000 feet : Sierra Co. to 

 Shasta and Modoc Cos. East to western Nevada. June-July, 



Locs. — Sierra Valley, Lemmon; Susanville, T. Brandegee ; Big Valley near Bieber, Lassen 

 Co., M. S. Baker ; Bear Creek, ne. Shasta Co. ; Goose Lake Valley, U. M. Austin 254. 



Refs. — Trifolium andersonii Gray, Proc. Am, Acad, 6:522 (1866), type loc, Carson City, 

 Nev., Anderson; McDer, N, Am. Sp. Trifolium 183, pi, 72 (1910) ; Jepson, Man, 544 (1925), 



25. T. g-ymnocarpon Nutt. Dwarf Clover. Caespitose dwarf 1 to 3 inches 

 high, the leaves and peduncles arising from the shortly branched root-crown; herb- 

 age white-pubescent; leaflets 3 to 5, obovate to elliptic, markedly serrate, 4 to 6 lines 

 long; stipules thin and scarious, forming conspicuous persistent sheaths to the 

 branches of the root-crown ; heads loosely few-flowered, surpassed by the leaves ; 

 calyx pubescent, its teeth lanceolate, about equaling the tube; corolla yellowish- 

 white or reddish, 3^/2 to 4 lines long, IV2 to 2 times as long as the caly:s; young 

 ovaries densely tomentose; pods very short and thick, 1 or 2-seeded. 



Plains, valleys and ridges, 5300 to 6300 feet : Plumas Co. to Modoc Co. East 

 to Colorado. 



Locs. — Madeline plains, Lassen Co., C. C. Bruce 2293 ; Cattle Pass, Mt. Bidwell, L. S. Smith 

 1156. 



Refs. — Trifolium gtmnocarpon Nutt.; T. & G. Fl. 1:320 (1838), type loc. Rocky Mts., 

 Nuttall; McDer. N. Am. Sp. Trifolium 187, pis. 74-76 (1910) ; Jepson, Man. 545 (1925). T. sub- 

 caulescens Gray, Ives. Rep. 10 (1860), type loc. near Fort Defiance, Ariz. T. plummerae Wats. 

 Bot, Cal. 2 :440 (1880), type loc. Pyramid Lake, Nev., Lemmon 4" Plummer. T. plummerae Loja. 

 Nuov. Giorn. Bot. Ital. 15 : 162 (1883), type loc. above Pyramid Lake, Nev., Lemmon. T. gymno- 

 carpon f. plummerae McDer. I.e. 192, pi, 77, 



26, T. oreganum Howell. Two-way Clover. Stems slender, 3 to 9 (or 12) 

 inches high, these and the chiefly basal leaves in a dense tuft on the root-crovm; 

 herbage glabrous to glabrate; leaflets linear-lanceolate or oblanceolate to obovate, 

 serrulate, mucronate, 3 to 11 (or 15) lines long; stipules ovate, acuminate, the 

 upper ones toothed, the lower entire; peduncles li/4 to 5I/2 inches long; heads a 

 little spicate, I/2 to ll^ inches long; pedicels very short (I/2 line long) ; flowers 6 

 to 7 lines long, reflexed in age ; calyx and especially the segments villous, the tube 

 more or less glabrate; calyx-segments subulate, the longer twice as long as the tube; 

 corolla pinkish or light red. 



Moist slopes in open pine forest, 5000 to 6000 feet : Trinity and Humboldt Cos. 

 to Shasta Co. North to Oregon, southeast to Arizona. Apr.-June. 



Locs. — Horse Mt., Humboldt Co., Tracy 7608 ; Bullard Basin, Salmon Mts., Hall 8629 ; La- 

 moine, Shasta Co., BlanJcinship. 



Refs. — Trifolium oreganum Howell, Erythea 1:110 (1893), type loc. Waldo, Ore., Howell; 

 McDer. N. Am. Sp. Trifolium 257, pi. 106 (1910), Jepson, Man. 543 (1925). T. rusbyi Greene, 

 Pitt. 1:5 (1887), type loc. n. Aria., Lemmon, Bushy (in part), T, oreganum f. rusbyi McDer. 

 l,c, 260, pi. 107, 



27, T. kingii "Wats. var. productum Jepson comb. n. Prong-horn Clover. 

 Stems rather slender, ascending, 4 to 15 inches high; leaflets lanceolate to oblong- 



