S 
Fie, 227. A group of gymnosperm cones, of which allexcept B are seed cones 
A, spruce (Picea excelsa), one half natural size; B, spruce, branch and staminate 
cones almost natural size ; C’, Douglas fir, or Douglas spruce (Pseudotsuga taxifolia), 
one fourth natural size; D, arbor vite (Thuja occidentalis), almost natural size 
298 
