Postelsia 
i" 
On 
tS 
winged. A genus of about seventy species, 
widely distributed throughout the north tem- 
perate zone and adjacent mountainous parts of 
the tropics» Whe greater: muimber of speciesmis 
found in the warmer parts of the range, over 
one-third of the known species occurring in 
southwestern North America. The extensive 
pine forests of more northern regions are com- 
posed of comparatively few species. Only two 
pines are known to occur in Vancouver Island, 
while a third may grow in the more mountain- 
ous parts of the island. 
Two sections of the genus Pinus are rec- 
ognized. 
Section 1. Pinaster. Endlicher, Synops. Conit. 
166.1847. emended. 
Apophysis of the cone-scale much thickened, 
more or less pyramidal with a central umbo. 
Foliage leaves in fascicles of one to five, usually 
with a persistent sheath of scales. 
Leaves in groups of two. Pinus contorta 
Pinus contoria Dougl., Loudon, Arb. Brit. 
A220 251828.. Oeruib deine: 
A small tree with stout branches often form- 
