300 LEGUMINOSAE 



Hillsides and valleys, 20 to 7800 feet: common tlirougliout cismontane Cali- 

 fornia. North to British Columbia, east to Nevada. Mar.-May. 



Locs. — S. Cal. (perhaps the most common Trifolium species) : San Diego, E. Brandegee ; 

 Pigeon Pass, Riverside, F. M. liced 74G ; San Bernardino foothills, Parish; Pacoima Cafion, San 

 Gabriel Mts., Fcirson 379; Ncwhall, Jcpson 8924 ; Santa Catalina Isl. (Erythea 7:144) ; Prisoners 

 Harbor, Santa Cruz Isl., Jepson 12,062; San Eniigdio Canon, Davy 1981. Coast Ranges: San 

 Luis Obispo, Summers; Mt. St. Helena, Jcpson 10,389; Mail Ridge, Humboldt Co., Jepson 1898; 

 Bull Creek, Humboldt Co., Jepson 1G,401 ; Quartz Valley, near Yreka, Butler 380. Great Valley: 

 Vacaville, Jcpson 13,683; Marysville Buttes, Jepson 13,682; Red Bluff, Jepson 16,352; Redding, 

 Blankinship. Sierra Nevada: Kaweah River, Woolsey; Markwood Mdw., Fresno Co., Jepson 

 16,036; Huntington Lake, E. Ferguson 368a; Mono Mdws., South Fork San Joaquin River, E. 

 Ferguson 419 ; Fresno Flats, Jepson 12,840 ; Guadalupe Mts., Mariposa Co., Jepson 10,731 ; 

 Gwiu Mine, Calaveras Co., Jepson 1776, 1791; Angels Camp, Jepson 10,425; Folsom, e. Sacra- 

 mento Co., Jcpson 15,741 ; DowTiieville, Lemmon. 



Refs. — TRiFOLiUil MICROCEPHALUM Pursh, Fl. 478 (1814), type Inc. Clarks River, Lewis 

 (cf. Piper, Contrib. U. S. Nat. Herb. 11:363) ; McDer. N. Am. Sp. Trifolium 117, pi. 43 (1910) ; 

 Jepson, Fl. W. Mid. Cal. 308 (1901), ed. 2, 226 (1911), Man. 541 (1925). T. microcephalum f. 

 velutinum McDer. I.e. 120, pi. 44, type loe. Tehipite Valley, Fresno Co., Hall 4" Chandler 493. 



16. T. repens L. White Clover. Stems creeping, bearing erect or ascending 

 leaves and petioles; peduncles 2 to 9 inches high, much exceeding the leaves; herb- 

 age glabrous; leaflets broadly obcordate, 4 to 9 lines long; stipules ovate-lanceolate, 

 acute; heads globose, 8 to 14 lines broad, the flowers completely reflexed in age; 

 calyx IMj to 3 lines long, its teeth subulate, shorter than the tube; corolla white or 

 pale pinkish, 4 to 5 lines long. 



Naturalized from Europe in moist meadows and waste places, 10 to 6500 feet ; 

 coastal region ; lower Sacramento River ; Sierra Nevada ; Inyo Co. Apr.-Aug. 



Locs. — Coastal region: Loa Angeles (Erythea 1:59); Fortuna, Humboldt Co., Jepson; 

 Eureka, Tracy 1946; Requa, Davy 5913. Lower Sacramento River: islands in sw. Sacramento 

 Co. (Erythea 1:243), Sierra Nevada: Mineral, Tehama Co., Jepson 12,274; Tallac, Eldorado 

 Co., Jepson 8086; Murphys, Calaveras Co. (Erythea 6:18) ; Angels Camp, Calaveras Co., Jepson 

 10,427; Cow Creek, Tuolumne Co., Jepson 6512; Yankee Hill, Tuolumne Co., A. L. Grant 756; 

 Phoenix Lake, Sonora, A. L. Grant 37a. Inyo Co.: Wild Rose Spr., Panamint Range, Jepson. 



Refs. — Trifolium repens L. Sp. PL 767 (1753), type from Europe; McDer. N. Am. Sp. 

 Trifolium 290, pi. 122 (1910) ; Jepson, Fl. W. Mid. Cal. ed. 2, 227 (1911), Man. 544 (1925). 



17. T. hybridum L. Alsike Clover. Stems stoutish, erect or ascending, 

 V2 to 2% feet high; herbage sparsely pubescent, or subglabrous; leaflets large, 

 ovate to orbicular, % to II/2 inches long; stipules ovate-lanceolate, foliaceous near 

 the margin, conspicuously veined; heads globose, 9 to 11 lines wide; pedicels pu- 

 bescent; calyx sparsely pubescent with appressed hairs, or glabrous, or a little 

 hairy in the sinuses; corolla light pink, 314 to 4 lines long; pods 3 or 4-seeded. 



Naturalized from Europe in valley flats, mountain meadows, or along creeks, 

 10 to 5800 feet : Humboldt, Siskiyou, Sierra and Tuolumne Cos. May-July. 



Locs. — Eureka, Tracy 2108; Areata, Davy 5601; Yreka, Butler 387; Pioneer sta.. North 

 Fork Yuba River, Jepson 16,803; Cow Creek, Tuolumne Co., Jepson 6510. 



Refs. — Trifolium hybridum L. Sp. PI. 766 (1753), type from Europe; McDer. N. Am. Sp. 

 Trifolium 288, pi. 121 (1910) ; Jepson, Fl. W. Mid. Cal. ed. 2, 227 (1911), Man. 543 (1925). 



18. T. breweri Wats. Forest Clover. Stems slender, erect or diffuse, 6 to 

 14 inches high; herbage pubescent, glaucous; leaflets obovate, notched or obtuse at 

 apex, coarsely dentate, 2 to 7 lines long; heads small (3 to 4 lines high), loose; 

 peduncles curved at apex in age and pedicels retrocurved so that the flowers at 

 last stand almost horizontally (that is, at right angles to the straight portion of 

 the peduncle) ; pedicels about 1^/2 lines long; flowers 2i/4 to 3 lines long; calyx 

 pubescent, its subulate teeth exceeding the tube; corolla cream-white to deep pink; 

 pods pubescent, short-stipitate, 1-seeded. 



Open forest slopes, 3000 to 6500 feet : Sierra Nevada from Madera Co. to Plu- 

 mas and Butte Cos.; Trinity Co. to Siskiyou Co. North to southwestern Oregon. 

 June-Aug. 



