308 LEGUMINOSAE 



Humboldt Co., Tracy 5992. Sacramento Valley : Vacaville, Jcpson 13,702 ; Colusa Co., K. Brande- 

 gee. Sierra Nevada foothills: Mariposa, Co7u;(1on ; Pilot Hill, Eldorado Co., K. Brandcgcc. 



Var. decipiens Greene. Leallets linear-e\ineate to obcordatc, entire or slit,'litly eniar^jinate 

 at apex. — Santa Barbara Co. to Humboldt Co.; Sacramento Valley; northern Sierra Nevada 

 foothills. North to WaahinRton (Piper, Contrib. U. S. Nat. Herb. n:;3()l). 



Variation note. — The variety decipiens Greene is mainly a leaf variation, although Greene 

 characterized his variety further" by its stouter stems and heads with more numerous flowers, as 

 opposed to the slender* stems and few-flowered heads of the species. We note in a series of 

 specimens that few-flowered heads are likely to be associated with small and delicate plants, but 

 that such plants may have leaflets which vary widely as to the depth of the apical notch. In general 

 the association of robust habit with shalluwly notched leaflets (that is, typical var. decipiens), 

 and of delicate habit with deeply notched leaflets (that is, typical of the species), is more com- 

 mon than the opposite combinations, though individuals more or less intermediate may be common 

 in a given locality. In the fields of Pope Valley, Napa Co., we have observed numerous plants 

 with every gradation from deeply notched leaflets to obtuse leaflets but without definite asso- 

 ciation with stem thickness or number of flowers in the head (Jepson, Crum 1055). The number 

 of specimens at hand of each form indicates that the species (except in the most extreme form) 

 is nearly as common and widely distributed as the variety. 



Locs. — Coastal region: Gaviota, Santa Barbara Co., Easttoood; San Luis Obispo, Summers; 

 Pilarcitos, San Mateo Co., Davy 1019; Berkeley, Davy 6548; Buck Mt., Humboldt Co., Tracy 

 2780. Sacramento Valley: Wolfskill, nw. Solano Co., Jepson 10,403; Crane Creek, w. Tehama 

 Co., Jepson 13,703; Eed Bluff, Jepson 13,704. Northern Sierra Nevada foothills: Placerville, 

 K. Brandegee ; Morleys sta., Shasta Co., If. S. Baker. 



Refs. — Trifolium bifidum Gray, Proc. Am. Acad. 6:522 (1866), type loc. near Mt. Diablo, 

 Breicer; House, Bot. Gaz. 41 : 334, fig. 2 (1906) ; McDer. N. Am. Sp. Trifolium 301, pi. 127 in part 

 (1910); Jepson, Fl.W. Mid. Cal. 307 (1901), ed. 2, 226 (1911), Man. 541 (1925). Var. decipiens 

 Greene, Fl. Fr. 24 (1891), type loc. San Francisco "Bay district" ; McDer. I.e. 302, pi. 127 in part ; 

 Jepson, Fl. W. Mid. Cal. 307 (1901), ed. 2, 226 (1911), Man. 542 (1925). T. hallii Howell, Fl. 

 Nw. Am. 135 (1898) as to the Oregon plant, not T. & G. T. greenei House, Bot. Gaz. 41:334 

 (1906), renaming of variety. 



35. T. ciliolatum Benth. Tree Clover. Stem stout, erect, fistulous, 1 to 2 feet 

 high; herbage glabrous throughout; leaflets oblong or oblong-ovate, obtuse, entire 

 to serrulate, 1/2 to li/i> inches long; stipules large, ovate-lanceolate, the margins 

 scarious; heads conical, 3 to 7 lines high; flowers reflexed in age; rachis often pro- 

 jecting through the head as a sterile point 1 to 5 lines long; calyx-teeth remarkably 

 ciliate; corolla pinkish-purple; banner inflated at base, tapering toward the apex; 

 pods 1 or 2-seeded. 



Plains, valleys and foothills, 50 to 5000 feet : throughout cismontane Califor- 

 nia. North to Washington. Apr. 



Locs. — Coastal S. Cal.: Mesa Grande, San Diego Co., E. Ferguson 35; Lugonia, San Ber- 

 nardino Valley, Parish; Pacoima Caiion, San Gabriel Mts., Peirson 378; Santa Catalina Isl. 

 (Erythea 7:144) ; Prisoners Harbor, Santa Cruz Isl., Jepson 12,065; Santa Barbara, Elmer 3824. 

 Coast Eanges: San Luis Obispo, Summers 168; Little Arthur Creek, w. of Gilroy, Jepson 9705a; 

 Black Hills, Mt. Diablo, Jepson 10,689; Calistoga to Porter Creek, Jepson 9184; Mt. St. Helena, 

 Jepson 10,368; South Mill Creek, Ukiah, Jepson 9276; Hydesville, Humboldt Co., Tracy 3720. 

 Great Valley: Selma, U. P. Kelley ; Lockeford, San Joaquin Co., Jepson 15,190; Vacaville, Jep- 

 son 13,668; Sutter City, Jepson 13,666; Red Bluff, Blanlcinship ; Crane Creek, w. Tehama Co., 

 Jepson 13,667. Sierra Nevada: Old Colony Mill, Marble Fork Kaweah Eiver, Jepson 631; Boot- 

 jack, Mariposa Co., Jepson 12,780 ; Cathay Valley, Mariposa Co., Jepson 12,767; Guadalupe Mts., 

 Mariposa Co., Jepson 10,734; Table Mt., Sonora, Jepson 6423 ; Yankee Hill, Tuolumne Co., A. L. 

 Grant 754 ; Gwin Mine, Calaveras Co., Jepson 1801 ; Angels Camp, Jepson 10,423 ; Eock Creek, 

 Butte Co., Heller 13,924. 



Refs. — Trifolium ciliolatum Benth. PI. Hartw. 304 (1848), type loc. Sacramento Valley, 

 Hartweg 270; Jepson, Fl. W. Mid. Cal. 307 (1901). T. ciliatum Nutt. Jour. Acad. Phila. n. ser. 

 1:152 (1847), type loc. Los Angeles, Gamlel; McDer. N. Am. Sp. Trifolium 292, pi. 123 (1910) ; 

 Jepson, Fl. W. Mid. Cal. ed. 2, 226 (1911), Man. 542, fig. 530 (1925) ; not T. ciliatum Clarke 

 (1813-1816). T. ciliatum var. discolor Loja. Nuov. Giorn. Bot. Ital. 15 :146 (1883), type loc. "in 

 monfcosis Californiae prope Sancta Inez", E. Cooper. 



36. T. gracilentum T. & G. Pin-point Clover. Stems slender, erect, spread- 

 ing or procumbent, 5 to 20 inches long ; herbage glabrous ; leaflets obovate, retuse 

 at apex, 3 to 6 (or 9) lines long; stipules ovate-lanceolate; heads numerous, small, 

 3 to 5 lines long, with the flowers reflexed in age, the rachis projecting ; calyx-teeth 



