464 TSUGA CANAPENSIS. 



the extremity, yellow-brown, pubescent and marked with narrow, fluted, 

 cortical out-growths. Buds small, ovoid-globose, reddish brown. Leaves 

 persistent three four years, shortly petiolate, linear, flat, obtuse or 

 sub-acute, O25 0'75 inch long, those on the under side of the 

 branchlets pseudo-distichous, those on the upper side erect or sub-erect, 

 dark green with a shallow median channel above, and two glaucous 

 stomatiferous bands beneath. Staminate flowers small, globose, shortly 

 stipitate. Cones terminal, mostly on short lateral shoots, ovoid, obtuse, 

 about 075 inch long ; scales shortly clawed, broadly oval, obtuse or 

 sub-obovate, with minutely denticulate margin, striated on the exposed 

 side and persistent after the fall of the seeds. 



Fig. 115. Fertile branchlet of Tsuga canadensis. 



T&uga canadensis, Carriere, Traite Conif. ed. I. 189 (1855) ; and ed. II. 241 (1867). 

 Macoim, Cat. Canad. Plants, 471. Beissner, Nadelholzk. 398, with tigs. Masters 

 in Journ. R. Hort. Soc. XIV. 255. Sargent, Silva N. Amer. XII. 63, t. 603. 



Abies canadensis, Michaux, Hist. Arb. Amer. I. 137, t. 13 (1810). L. C. 

 Richard, Mem sur les Conif. 77, t. 17 (1826) London, Arb. et Frut. Brit. IV. 

 2322, with figs. Hoopes, Evergreens, 184, with tig. Gordon, Pinet. ed. II. 22. 



Picea canadensis, Link in Liimsea, XV. 523. 



Pinus canadensis, Linnaeus. Sp. Plant, ed. II. 1421 (1763). Lambert, Genus Pinus, 

 I. t. 32 (1803) Endlicher, Synops, Conif. 86. Paiiatore, D. C. Prodr. XVI. 428. 

 And many others. 



Eng. and Amer. Hemlock Spruce. Fr. Sapin du Canada Germ. Schierlingstaime. 

 Ital. Abete del Canada. 



var. alba spica (syn. argentea). 



A variety of European origin in which the tip of all or nearly all 

 the young shoots is cream-white. Another coloured form is known as 

 aurea, but the variegation is said to be inconstant. 



