38 NORTH AMERICAN FAUNA. [No. 16. 
Alice Eastwood showed me, in the herbarium of the California Acad- 
emy of Sciences, a cone, said to have come from Wagon Camp, in which 
the bracts, except a few at the base, are not exserted. 
SILVER PINE on Mounrain WHITE PINE (Pinus monticola).—Silver 
pines occur here and there on Shasta, scattered among the Shasta firs. 
They were found in greatest abundance on a pumice slope south of 
Brewer Creek Canyon, where they are the dominant trees up to an 
altitude of 7,200 feet, and where the ground was strewn with cones of 
the previous year—cones in which the scales are strongly reflexed. 
IP 
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Fig, 20.—White-bark pine (Pinus albicaulis). 
In this area, along Brewer Creek, they meet and slightly overlap the 
alpine hemlocks and white-bark pines of the zone above. They are 
common also on the steep lava ridges on the north side of Shasta, par- 
ticularly in the neighborhood of Inconstance Creek and in Mud Creek 
Canyon, especially on the west side of the ridge between Mud and 
Clear creeks. A few trees occur near the top of Red Cone, east of 
Wagon Camp. 
LopGE-PoOLE PINE (Pinus murrayana).—The lodge-pole pine was 
not found on Shasta except on the northeast quadrant, where Ver- 
