136 Postelsia 
typical of the whole region, a discussion of its 
conifers is not without general interest. 
The main facts brought out in the following 
discussion have been obtained from observations 
during four summers spent in the vicinity of the 
Minnesota Seaside Station in southwestern Van- 
couver. Additional data as to geographical dis- 
tribution have been obtained from Macoun’s 
Catalogue of Canadian Plants and Sargent’s 
American Sylva, together with an examination 
of the specimens in the herbarium of the Uni- 
versity of Minnesota and some personal ob- 
servations made in the mountains of the upper 
mainland of British Columbia. The formal 
specific descriptions are largely adapted from 
Sargent’s Sylva. 
The topography of Vancouver Island is every- 
where hilly and in the central portion it is very 
mountainous with numerous summits. which 
reach the level of perpetual snow. As is usual 
in regions of rugged topography, there is very 
considerable local variation in climate. Stations 
at sea level have a mean temperature of 45° to 
50° E: 
The west coast, being under the immediate 
