154 IP OS t c Isia 



winged. A genus of about seventy species, 

 widely distributed throughout the north tem- 

 perate zone and adjacent mountainous parts of 

 the tropics. The greater number of species is 

 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 Piniis are rec- 

 ognized. 

 Section i. Pinaster. Endlicher, Synops. Conif. 



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 



Piniis contorta Dougl., Loudon, Arb. Brit. 

 4:2292 1838. Scrub Pine. 



A small tree with stout branches often form- 



