( 407 ) 
southward to San Bernardino County. In southern California 
this is acommon shrub in the chaparral on the mountains and foot- 
hills, especially toward the coast. Upper Sonoran. 
Specimens examined: Santa Barbara, Nuttall; Torrey, 1850; 
Pasadena, Jones, May 8, 1882; Sepulveda Canyon, Santa Monica 
Mountains, Abrams 2541; Claremont, Baker 3443; San Gabriel 
Canyon, Leiberg 3404; Arroyo Seco, above Devil’s Gate, Abrams 
1427; Mill Creek, San Bernardino Mountains, Abrams 9 McGregor 
$22; Cleghorn Canyon, San Bernardino Mountains, Abrams & 
McGregor 700. 
5. RHAMNUS TOMENTELLA Benth. Pl. Hartw. 303. 1848. 
Rhamnus californica tomentella Brew. & Wats. Bot. Calif. 1: ror. 
1876. 
Rhamnus Purshiana tomentella K. Brand. Zoe 1: 244. 1890. 
Type locality: “In montibus Sacramento.” 
Distribution: In the chaparral belt of the Sierra Nevada, ex- 
tending southward to northern Lower California, and eastward 
to Arizona. In southern California this species replaces R. cali- 
fornica on the more interior mountains away from the influence of 
the coast fogs. Upper Sonoran. 
Specimens examined: Mount Pinos, Elmer 3817; Sespe Creek, 
near Ten Sycamore Flat, Abrams &§ McGregor 166; Sisar Canyon, 
Topatopa Mountains, Abrams &§ McGregor 66; foothills of the San 
Bernardino Mountains, Parish, June 26, 1898; San Diego, Parry, 
1850; Palomar Mountain, McClatchie, July, 1896; near Foster’s, 
Abrams 7371; Cuiamaca Mountains, between Julian and Cuia- 
maca, Abrams 3962; Buckman’s Springs, Susan G. Stokes, July 18, 
1895; hills near Campo, Abrams 3605. 
6. Ruamnus cuspipaTa Greene, Leaflets 1: 64. 1904. 
Type locality: ‘“Near Tehachapi.” 
Distribution :Tehachapi Mountains, southward along the desert 
slopes of the San Gabriel and the San Bernardino Mountains. 
Upper Sonoran. . 
Specimens examined: Rock Creek, Abrams & McGregor 532, 
621; Oakgrove Canyon, Liebre Mountains, Abrams § McGregor 
327; Lone Pine Canyon, San Gabriel Mountains, Abrams & Mc- 
Gregor 664; Hathaway Flat, San Bernardino Mountains, Abrams 
&§ McGregor 809. 
