1 84 p s t e I s i a 



or shorter than the scales; cone-scales deciduous 

 from the axis which persists for a long time. 

 Seeds with conspicuous resin vesicles, winged. 



A grou}) of aljout twenty-five somewhat di- 

 verse species, mostly inhabiting the mountainous 

 regions of the north temperate zone and the ad- 

 jacent tropics. Over half the species occur on 

 the Pacific slopes of North America and Asia. 

 Onlv two species of Ru- Abies are reported from 

 X'ancouver Island, but it is highly probable that 

 a third sjiccies occurs there, and the presence of 

 a fourth species is {){)ssible. 



Bracts of mature cone shorter than the scales, 

 leaves flat. 



Resin ducts of leaves within the paren- 

 chvma, leaves blue-green and glau- 

 cous, cones medium sized. 



Abies lasiocarpa 

 Resin ducts of leaves close to the lower 

 epidermis. 



Bracts of cone oblong or obcordate, 

 with an abruptly acuminate apex. 

 Cones medium sized. 



Abies grand is 



