( 403 ) 
extends inland even to the desert slopes of the Cuiamaca Moun- 
tains. Upper and Lower Sonoran. 
Specimens examined: Santa Barbara, Nuttall; Parry, 1850; 
Elmer 3608; Los Angeles, Franceschi, 1893; Playa del Rey, 
Abrams 287; Big Tejunga Wash, San Fernando Valley, Abrams 
1385; Claremont, Baker 4156; Ysidora, Abrams 3307; San Diego, 
Brandegee (distributed by C. F. Baker 818); Herre, July 23, 1902. 
2. Neostyphonia ovata (S. Wats.). 
Rhus ovata §. Wats. Proc. Am. Acad. 20: 358. 1885. 
Type locality: “On hills and mountains, away from the coast, 
from San Diego to Los Angeles County, the Cantillas Mountains 
in Lower California, and in Southern Arizona; also on Santa 
Catalina Island.” 
Distribution: Santa Ynez Mountains, southward through the 
chaparral belt of the coastal slope to northern Lower California; 
also on the islands of the coast of southern California, and in 
Arizona. Upper Sonoran. 
Specimens examined: Santa Ynez Mountains, Brandegee; Dunn, 
1891; Elmer 3904; San Fernando Mountains, near Chatsworth, 
Abrams 1369; Sepulveda Canyon, Santa Monica Mountains, 
Abrams 2559; Sawpit Canyon, San Gabriel Mountains, Dudley, 
Dec. 1907; hills near Monrovia, Baker 4147; Lone Pine Canyon, 
San Gabriel Mountains, Abrams &% McGregor 677; Redlands, 
Parish, April 21, 1891; Fallbrook, Jones 3318; between Campo 
and Potrero, Abrams 3710. 
4. LITHRAEA. Catirornia sumac. 
1. Lirgraca Laurina (Nutt.) Walp. Rep. 1: 551. 1842. 
Rhus laurina Nutt.; Torr. & Gray, Fl. N. Am. 1: 219. 1838. 
Type locality: ‘On bushy plains, near St. Barbara, California.” 
Distribution: Southern slopes of the Santa Ynez Mountains 
southward to northwestern Lower California, and on the islands 
as far south as Cedros Island. In southern California this species 
is confined chiefly to the lower portions of the chaparral belt. 
Upper and Lower Sonoran. 
Specimens examined: Santa Barbara, Elmer gors; Mountain 
Drive, Santa Barbara, Abrams 4154; Santa Monica Canyon, 
Abrams 2192; Scoville’s Hill, Pasadena, Grinnell, July 3, 1903; 
