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 obser- 

 vation and reliable information; further knowledge is more likely 

 to extend than to restrict them. 



LIST OF TREES. 



Fretnontia Calif omica Torr. Fieuiontodendron Calif ornicu-ni 

 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. Fls. 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, Ganojig. 



Rhamniis Californica Esch. Shrub, 12 feet high, with 

 slender stems. Fls. 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. 



Rha^nnus Californica var. tonicntclla Brew. & Wats. R. 

 tomentella Benth. Greene Fl. Fr. 80. Coville, 1. c. 78. Like the 

 species in habit and size, and of the same range, but less 

 abundant. 



yEsculus 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. Fls. 

 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 loth 

 U. S. Census (ix. 44) is unsupported by any data. 



Acer glabruin Torr. Shrub, 5 feet high. Rare. Head- 



