(349 ) 
11. Quercus Atvorpiana Eastwood, Handb. Trees Calif. 48, 
pl. 27, fig. 4. 1905. 
Type locality: “In the mountains connecting the Coast Range 
with the Sierra Nevada at the southern end of the San Joaquin 
Valley bordering the deserts.” 
Distribution: Desert slopes of the southern California moun- 
tains, extending from the Tehachapi Mountains southward into 
Lower California. This species may be only a form of Q. pungens 
to which it is certainly very closely related. Upper Sonoran. 
Specimens examined: Frazier Borax Mine, Mount Pinos, Abrams 
€§ McGregor 266; Oriflamme Canyon, Cuiamaca Mountains, 
Abrams 3935. 
3. CASTANOPSIS. Curnquapin. 
1. CASTANOPSIS SEMPERVIRENS (Kell.) Dudley; Merriam, N. Am. 
Fauna, no. 16: 142. 1899. 
Castanea sempervirens Kell. Proc. Calif. Acad. 1: 75. 1855. 
Type locality: “From the vicinity of Mariposa.” 
Distribution: Southern Cascade Mountains southward through 
the Sierra Nevada and the mountains of southern California, to 
the San Jacinto Mountains. In southern California it occupies 
a comparatively distinct belt in the border line between the Tran- 
sition and Canadian Zones. 
Specimens examined: North Baldy, Abrams & McGregor 607; 
Mount San Antonio, Abrams 2712; Mount San Gorgonio, altitude 
3200 meters, Abrams &F McGregor 759. 
POLYGONACEAE. Bucxwueat Famity. 
1. ERIOGONUM. Witp BuckwHEat. 
Involucres capitate or fascicled, in cymose-umbellate clusters; bracts foli- 
aceous. 
Leaves orbicular to oblong, not fascicled. 
Peduncles elongated; flowers very villous. 
1. E. cinereum. 
Peduncles short; flowers glabrous. 2. E. parvifolium. 
Leaves narrowly oblanceolate, often revolute, more or less fascicled. 
Perianth glabrous without; leaves nearly so. 
3. E. fasciculatum. 
Perianth villous without. 
Leaves green and nearly glabrous above; involucres 3 mm. high. 
3a. E. fasciculatum foliolosum. 
