138 ABIES LASIOCARPA HOOK. AND ITS ALLIES. 



from, the coast in the north, then proceeding southward and east- 

 ward along the Kocky Mountains to Colorado, and perhaps to New 

 Mexico, the conjecture may be hazarded that all these forms belong 

 to one species, or that they may have had a common origin. This 

 view is supported by the variation in the size and form of the 

 leaves of the native specimens, and especially in the young plants 

 cultivated in British nurseries. If this view shouJd be ultimately 

 established, Sir William Hooker's name of lasiocarpa must be 

 adopted to cover the whole. Meanwhile, for practical purposes, 

 the grouping which seems to be most in accordance with the facts 

 as we know them at present, is the following : — 



PiNus (Abies) lasiocarpa W. Hook, in * Flora Boreali Americana, 

 ii. 163 (1842). Abies lasiocarpa Nuttall, Sylva. 9 A. subalpina Engel- 

 mann partim. 



Interior of N. W. America (Columbia Kiver), Douglas ! Lyall 

 in Mus. Kew (cones) ! ; Oregon, Cascade Mountains, Moseley ! 



Abies bifolia Murray in Proc. Eoy. Hort. Soc. Lond. iii. 

 (1863), p. 318. 



A. subalpina Engelmann in 'American Naturalist,' x. 554 (1876) 

 pro parte; Masters in Gard. Chron. Feb. 19, 1881, p. 236, c. ic; 

 Journ. Linn. Soc. Lond. 1886, vol. xxii. p. 183. 



Galton range of the Kocky Mountains, Lyall \ E. side of the 

 Cascade Mountains, Lyall ! Pringle ! Columbia Valley, Lyall ! 

 Mount Hood, Oregon, Stewart \ Colorado, Forest City, Engelmann 

 d Sargent ! Derry ! Brandegee ! Kelso's Cabin, Hooker S Gray ! ?New 

 Mexico, Boezl. 



Var. FALLAx Engelmann in Trans. St. Louis. Acad. iii. 597. 



I only know this from Engelmann's description, according to 

 which it has " the resin-ducts of this species, but the foliage almost 

 of cojicolor, leaves sometimes 1| or even If in. long, mostly obtuse, 

 and covered with stomata above, glaucous when young." 



Cascade Mountains, south of the Colombia, Dr. Newberry fide 

 Engelmann. An imperfect specimen from Colorado, in the Kew 

 Herbarium, appears to belong here. 



The full synonymy and bibliography of these forms is given in 

 Prof. Sargent's Keport on the Forests of North America, in the 

 Tenth Census Report (1884), p. 211, under the head of Abies 

 subalpina. 



Under the same heading the geographical distribution of A. 

 subalpina (including lasiocarpa and bifolia) is given as follows : — 

 ''Valley of the Stakhin River, Alaska, in lat. 60° N. (Muir), south 

 through British Columbia [at an elevation of 4000 feet] , and along 

 the Cascade Mountains to northern Oregon {Cullier), through the 

 Blue Mountains of Oregon and the ranges of Idaho, Montana, 

 Wyoming, Utah and Colorado [at an elevation of 12,000 feet] ." 



