54 WEST-AMERICAN 



This lovely Hemlock is peculiarly characterized by its 

 alpine habitat, its cones larger than any other Hemlock- 

 Spruce, 2 to 3 inches long, oblong-cylindrical; scales 

 numerous, nearly of the same size, usually reflexed at 

 maturity, broader than long, 4 to 8 lines wide, 

 striate, with thin, wavy, rounded border; bracts small, 

 spatulate, 3 to 4 lines long; seeds angular, with 

 resin vesicles; wings elliptical, 3 to 6 lines long; 

 leaves linear, about J inch long, dark green, scattered, or 

 tufted at the ends of short brauchlets, quadrangular, 

 keeled above and below; resin duct solitary and large. 

 Pollen grains bilobed, unlike the other Tsugas. 



This tree has so many peculiar characters that the au- 

 thor of this volume published it (3d 'Rep. Cal. Board For- 

 estry, p. 126) as the type of a distinct genus Hesperopeuce. 



HOOKER'S HEMLOCK Var. Hookeriana. n. var.* 

 A bies Hookeriana Murray. 



Smaller, usually tall, slender, pinnacle-shaped trees, 

 with short, drooping branches, and smaller cones, 1 \ 

 to two inches long, the scales at maturity less spread- 

 ing and less striated. Alpine regions of the Cascade 

 Range, and eastward along the cross ranges to the 

 Selkirk and Gold Ranges, and' the Northern Rocky 

 Mountains. 



* New variety, not before published. 



