140 Postelsia 
All parts of Vancouver Island are heavily 
forested except the southeastern peninsula and 
the higher mountain summits of the interior. 
The densest forests are to be found in the vicin- 
ity of the west coast, where the climatic con- 
ditions are particularly favorable to the growth 
of trees. 
Only thirteen species of conifers are known 
to occur spontaneously on the island, viz. :- 
TAXACH AS 
Taxus breviiolia 
PINAC EAL 
ABIETINEE 
Pinus monticola 
Pinus contorta 
Abies (Picea) sitchensis 
Abies (Hes peropeuce) Mertensiana 
Abies (Tsuga) heterophylla 
Abies (Pseudotsuga) taxijolia 
Abies grandis 
Abies amabilis 
CUPRESSINEZ 
Thuja plicata 
