340 Trees of Southern California. [ZOE 
The following list includes all species which have been reported 
as trees, or which are so elsewhere, although here reduced to 
shrubs. The dimensions given are those of full-grown, but not 
exceptionally large specimens. ‘The dimensions as well as the 
altitudes are estimated; it is regretted that actual measurements 
cannot’be given. The ranges are assigned from personal obset- 
vation and reliable information; further knowledge is more likely 
to extend than to restrict them. 
LIST OF TREES. 
Fremontia Californica Torr. Fremontodendron Caltfornicum 
Coville Death Val. Rep. 74. Arborescent shrub, 12 feet high, 
the stems 4 inches in diameter. On dry hillsides often forming 
extensive thickets which are conspicuous from a long distance 
when in bloom, from the abundance of the showy yellow flowers. 
The dense hairs which clothe the capsules are stinging to the 
flesh. Fis. May; Fr. August. Abundant along the northern, or 
desert, base of the San Bernardino Range from Cushenberry 
Cafion to Antelope Valley. Rare on the southern side of the 
Range; Lytle Creek. Also near San Diego, Ganong. 
Rhamnus Californica Esch. Shrub, 12 feet high, with 
slender stems. Fis. April-June; Fr. Sept. Throughout the 
mountain region at from 2500 to 5000 feet altitude on the 
southern slope of the San Bernardino Range to the Coast. 
Rhamnus Californica var. tomentella Brew. & Wats. A&. 
tomentella Benth. Greene Fl. Fr. 80. Coville, l.c. 78. Like the 
species in habit and size, and of the same range, but less 
abundant. 
sculus Californica Nutt. Small tree, or arborescent shrub, . 
15 feet high, trunk 6 inches in diameter, usually forming groves 
on hillsides; when solitary with rounded compact head. Fis. 
June. A single tree, edge of Antelope Valley, but abundant in 
the Cafiada de las Uvas, at Ft. Tejon, a few miles over the Los 
Angeles County line. The reference to its occurrence in the 
San Bernardino Mountains, in the Forestry Report of the roth 
U.S. Census (ix. 44) is unsupported by any data. 
Acer slabrum Torr. Shrub, 5 feet high. Rare. Head- 
