The Species of the Genus Larix. 31 
makes L. Lyallii easily recognisable, even without the 
cones. The wings of the seeds are stated to be of a faint 
red colour in contradistinction to those of L. occidentalis, 
É 
Fig. 8. L. Lyallii Parl. One year’s Fig. 9. L. Lyallii Parl. Cone 
shoot showing dense pilosity. from British Columbia, Tecamo- 
Montana, Glacier National Park, res (leg. John Macoun, July 1889). 
Piegan Purs, 2100 m. No. 2204 (leg. (Nat. size, upper dry, lower wet) 
J. G. Jack, Sept. 1921). 
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where they are brown; but the material of L. Lyallii from 
i Glacier National Park (2100 m. above sea-level) in Montana, 
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and from Tecamores in British Columbia, presents this 
difference to a slight degree only, and it can, no doubt, be 
entirely absent. 
In recent times (1893 and later), trials have been made 
