32 University of California Publications in Zoology. (Vou. 
Pinus Murrayana Balfour. 
The tamarack or lodge-pole pine marked the lower division of 
the Boreal zone, and woods consisting of that species alone coy- 
ered a large part of the highest ridges from San Bernardino peak 
to the neighborhood of San Gorgonio peak. From an altitude 
of 8500 feet to 10,000 feet on north slopes and from 9500 to 
11,000 feet on south slopes, it was the prevailing tree. On the 
north face of Sugarloaf from 9000 feet to the summit, 9800 feet, 
was an extensive tract, and scattering individuals occurred in 
company with firs and yellow pines around Bluff lake, 7500 feet. 
A queer misplacement of the species, apparently out of its zone, 
was the occurrence of small groves on both the north and south 
shores of Bear lake, 6700 feet altitude. (See pls. 3A, 48, 7.) 
Pinus flexilis James. 
The limber pine marked a higher division of the Boreal zone 
than the tamarack pine, and in dwarfed or prostrate form ex- 
tended to the summits of the highest peaks. On north slopes I 
saw large well-formed trees down among the tamaracks as low 
as 9200 feet (near Dry lake). Towards the upper part of San 
Gorgonio peak and adjacent ridges the limber pine oceurred ex- 
clusively, and became gnarled and dwarfed in the extreme. Sev- 
eral examples grow near the monument on the yery summit, 
11,485 feet altitude. I saw many limber pines along the ridge 
from San Bernardino peak eastward, and on the erest of Sugar- 
loaf, but not elsewhere. (See pls. 3A, 84, 8B.) 
Ephedra viridis Coville. 
The desert tea was an abundant shrub on the desert slope of 
the mountains, as high as a little above Cactus flat, 6000 feet 
altitude; also down on the desert around Cushenbury springs. 
Lilium Parryi Watson. 
This handsome lily is abundant in the shaded canons above 
the 5500-foot contour south of the Santa Ana. We found it in 
bloom the last of July in Fish ereek, Lost creek, and South Fork 
canons. In the latter it was noted up to 8000 feet altitude. 
