92 Nr. 2. C. H. OsTENFELD and C. SYRACH LARSEN: 
broad-shouldered“ — alluding to the right-angle between 
the „mucro“ and the remaining free margin of the bracts. 
The cone-scales are fewer in number, longer, and narrower 
in the case of the Alaskan Larch, and, finally, the shorter 
Fig. 29. L. laricina (Du Roi) Fig. 30. L. laricina (Du Roi) Koch. 
Koch. Cones from Canada, Cones from cultivated tree; Den- 
Ontario, Lake Superior (leg. mark, Bellevue near Beldringe, 
K. Heimbürger, 1928). (Nat. Præstø. (Nat. size, upper row 
size, upper row dry, lower dry, lower row wet). 
row wet). 
leaves and slower growth are stated to be characteristic for 
the latter. 
An investigation of the material from Fort Gibbon (lat. 
65° N., long. 152° W.) which lies on the Yukon River, 
and is very close to Tanana, from which WicxT's type 
came, confirms WIGHT's description, and there is no doubt 
that it fits the larch in Alaska. But this is not sufficient 
to separate it from L. laricina. In a large collection of 
cones from Lake Superior kindly sent us by Mr. K. Heın-. 
BURGER 1927, several cones are to be found which exactly 
correspond to those from Fort Gibbon, and this will prob- 
ably always be the case whenever there is abundant 
