350 Trees of Southern California. [zoe 



some of the canons of these mountains; smaller groves are found 

 in the canons of the San Jacinto Mountain, near Agua Caliente 

 (Palm Springs), and a few trees in the Whitewater Cafion on the 

 eastern side of the San Bernardino Mountain mark the western 

 limit of the species. 



Washingtonia robtista is an obscure species, described from 

 young cultivated plants, and has never been identified with any 

 uncultivated trees. Its identity with W. filifera can hardly be 

 doubted. See Watson, Proc. Am. Acad, xxv, 136; Parish, Gard. 

 & For. iii, 51, 542; Orcutt, W. Am. Sci. i, 63, 76. 



Phius Laf>ibertia?m Dougl. Tree of large size, 200 feet high, 

 trunk 8 feet in diameter. Scattered throughout the higher moun- 

 tains at from 5000 to 7000 feet altitude, usually in the richer and 

 moister sort of flats and canons. San Bernardino and San 

 Jacinto Mountains. 



Finns albicazdis Engelm., Trans. St. L<ouis Acad, ii, 209; 

 Bot. Gaz. vii, 4; Coll. Wks. 329, 383. P. flexilis James var. 

 a/^/Va«/z^ Engelm., Bot. Calif, ii, 124. Tree40 feet high, the trunk 

 2 feet in diameter, or at its upper limit gnarled and prostrate 

 and but a few feet in height. On Grayback Mountain, constitut- 

 ing the upper edge of the timber belt, and extending from 1000 

 feet below the summit (11,725 ft.) to within 100 feet of it. Dead 

 trees, probably of this species, are scattered up to the summit. 

 {W. G. Wright?) This is the Southern known limit of this 

 pine. 



Pinus Parryana Engelm. Symetrical tree, 20 feet high, trunk 

 a foot in diameter. Forms extensive forests on dry mountains in 

 lyOwer California, a few trees probably straggling across the 

 boundary; a single one observed near I^arken's Station June. 

 1890, in flower. 



Pimcs mo7iophylla Torr. & Frem. Irregular tree, 30 feet high, 

 the trunk 18 inches in diameter. Fls. June; Fr, Sept. Rocky 

 canons and ridges on the north side of the San Bernardino Moun- 

 tains, from Cushenberry Springs to Cox's Ranch. Reported by 

 Bigelow (Pac. R. R. Rept. iy, 15), from Cajon Pass, but not now 

 found there. 



Pinus Torreyana Parry. Sea coast hills at Del Mar, San 



