PEA FAMILY 309 



subulate, entire, shorter than the reddish -purple to light pink corolla; pods 1 or 

 2-seeded. 



Valleys and foothills, 50 to 2500 feet : coastal Southern California ; Coast 

 Ranges; Great Valley. North to Washington. Mar.-May. 



Geog. note. — The prevailing form in central and northern California is the typical state of 

 the species with the calyx much exceeded by the dark purple corolla. Though much less common 

 southward, it extends to San Diego Co. The variety inconspicuum Fer., with pale corollas and 

 long calyx -lobes, has a center of distribution from Los Angeles to San Diego and is in that region 

 apparently more common than the species. While the combination of pale corollas and long 

 calyx -lobes is the common one for the variety, forms with relatively short calyx -lobes also occur 

 throughout its range. 



Locs. — Coastal S. Cal.: Jaeumba, San Diego Co., T. Brandegee ; Cahuilla Valley, w. Eiver- 

 side Co., Jepson 1474a; Banning, Gilman; San Bernardino, Parish; Purisima Hills, Santa Bar- 

 bara Co., Jepson 12,651. Coast Eanges: Pacific Grove, Heller 6629; Mt. Hamilton, Jepson 4199; 

 Corral Hollow, Mt. Hamilton Eange, Jepson 9564; Mt. Diablo, Jepson 9858; Oakland HUls, 

 Jepson 6865; Mt. Davidson, San Francisco, Jepson 10,355; Vallejo, BlanTcinship. Great Valley: 

 Delano, Tulare Co., Muns 9010 ; Coalinga, Jepson 15,355 ; Vacaville, Jepson, 13,685 ; Mills sta., 

 n. Sacramento Co., Jepson 15,733; Sutter City, Jepson 13,688; Eed Bluff, BlanTcinship. 



Var. inconspicuum Fer. Smaller but like the species in habit ; stems 4 inches high or less ; 

 flowers light purple to white ; calyx nearly equaling to slightly exceeding the corolla ; banner 

 broader. — Coastal Southern California ; occasional in Coast Eanges and Great Valley. 



Locs. — San Diego, K. Brandegee ; Banning, Gilman 14; Highland, San Bernardino Valley, 

 Parish 4684; Glendora, Los Angeles Co., E. D. Palmer; San Fernando, Jepson 8927; Bakersfield, 

 Jepson 6767 ; Lone Willows road sta., Fresno Co., Jepson 11,585 ; San Luis Obispo, Jones 2675 ; 

 Little Arthur Creek, w. of Gilroy, Jepson 9717; Santa Eosa Creek, Sonoma Co., Bolander 3804. 



Var. palmeri McDer. Leaflets large (% to 1^/4 inches long), lanceolate, abruptly acute at 

 tip, the margins serrate-setate ; corolla purple to pink. — Santa Catalina Isl. (Erythea 7:144); 

 San Clemente Isl., Nevin. South Guadalupe Isl., Lower California. 



Eefs. — Trifolium gracilentum T. & G. FI. 1:316 (1838), type from Cal., Douglas; McDer. 

 N. Am. Sp. Trifolium 295, pi. 124 (1910) ; Jepson, Fl. W. Mid. Cal. 307 (1901), ed. 2, 226 (1911), 

 Man. 542, fig. 531 (1925). T. denudatum Nutt. Jour. Acad. Phila. n. ser. 1:152 (1848), type 

 loc. "pueblo de los Angeles", Gambel. T. exile Greene, Pitt. 1:6 (1887), type loc. Santa Cruz 

 Isl., Greene. T. gracilentum var. exile Kennedy, Muhl. 5 : 10 (1909) . T. gracilentum var. palmeri 

 f. exile McDer. I.e. 300. T. gracilentum var. reductum Parish, Bot. Gaz. 65:338 (1918), type 

 loc. summit of Pilot Knob, Mohave Desert, Parish 10,160. Var. inconspicuum Fer. Zoe 4 : 380 

 (1894), type loc. San Bernardino, Parish 2647; McDer. I.e. 297, pi. 125; Jepson, Fl. W. Mid. Cal. 

 226 (1911), Man. 542 (1925). T. inconspicuum Hel. Muhl. 1:135 (1906). Var. palmeri McDer. 

 I.e. 300. T. palmeri Wats. Proc. Am. Acad. 11:132 (1876), type loc. Guadalupe Isl., Palmer. 



37. T. macraei H. & A. Chile Clover. Stems several from the base, spreading, 

 stout or often wiry, 4 to 12 inches long; herbage softly pubescent throughout; 

 leaflets obovate, 4 to 6 lines long; heads 4 to 6 lines high, borne in pairs, sessile or 

 shortly pedunculate, subtended by the broadly ovate stipules and sessile leaves; 

 calyx-teeth plumose, linear-subulate to filiform, dilated at the base; corolla purple, 

 as long or longer than the plumose calyx; pods 1-seeded. 



Along the immediate coast, 5 to 50 feet : Del Norte Co. to Monterey Co. ; Santa 

 Catalina Isl. Chile. Apr. 



Locs. — Lake Earle, Del Norte Co., Davy; Eureka, Chandler 1148; Point Eeyes, Jepson 8311; 

 Corte Madera, Marin Co., Heller; North Berkeley Hills, Tracy 737; San Bruno, Michener Sr 

 Bioletti; Pilarcitos, San Mateo Co., Davy 1016 ; Mt. Hamilton, Elmer 4673 ; Del Monte, Monterey, 

 Heller 6664; Santa Catalina Isl. (Erythea 7:144). 



Eefs.— Trifolium macraei H. & A. Bot. Misc. 3:179 (1833), type loc. "Baths of Collina" 

 (Chile), Macrae; McDer. N. Am. Sp. Trifolium 202, pi. 81 (1910) ; Jepson, Fl. W. Mid. Cal. 

 305 (1901), ed. 2, 227 (1911), Man. 545 (1925). T. cataUnae Wats. Proc. Am. Acad. 25:128 

 (1890), type loc. Santa Catalina Isl., T. Brandegee. T. macraei f. catalinae McDer. I.e. 204, pi. 

 82. T. Mcephalum Elmer, Bot. Gaz. 41:312 (1906), type loc. San Pedro, San Mateo Co., Elmer 

 4812. T. mercedense Kennedy, Muhl. 9:17 (1913), type loc. Lake Merced, San Francisco, Tracy 

 1822 (stems stout and erect; calyx-tube 1 line long, teeth 21/2 lines long). 



38. T. amoenum Greene. Two-fork Clover. Stem stout, erect, commonly 

 one from the base, dichotomously branched only above, 1/3 to 2 feet high, few- 

 headed; herbage more or less densely pubescent; leaves subsessile; leaflets broadly 



