350 Trees of Southern California. [ZoE 
some of the cafions of these mountains; smaller groves are found, 
in the cafions 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 robusta 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. 
Pinus Lambertiana 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 cafions. San Bernardino and San 
Jacinto Mountains, 
Pinus albicaulis Engelm., Trans.- St. Louis Acad. ii, 209; 
Bot. Gaz. vii, 4; Coll. Wks. 329, 383. P. flexi/is James var. 
albicaulis Engelm., Bot. Calif. ii, 124. Tree 4o 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 
Lower California, a few trees probably straggling across the 
boundary; a single one observed near Larken’s Station June, 
1890, in flower. 
Pinus monophylla Torr. & Frem. Irregular tree, 30 feet high, 
the trunk 18 inches in diameter. Fis. June; Fr. Sept. Rocky 
cafions 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. iv, 15), from Cajon Pass, but not now — 
found there. 
Pinus Torreyana Party. Sea coast hills at Del Mar, San 
