Peculiarities. Commercial Divisions. Botanical
Characteristics 148
_a._ Black Spruce (Picea nigra) 150
_b._ Red Spruce (Picea rubens) 150
_c._ White Spruce (Picea alba) 151
_d._ White Spruce (Picea engelmanni) 152
_e._ Sitka Spruce (Picea sitchensis) 153
DOUGLAS SPRUCE (Pseudotsuga).