Tsuga 229 



Leaves, i to f inch long, oblong, rounded at the apex, which is entire, minutely notched 

 or mucronate ; lower surface with two narrow well-defined white stomatic bands. 

 Buds reddish, ovoid, sharp-pointed ; scales indistinctly keeled. 



In addition to the preceding, two species of Tsuga, belonging to this section, 

 occur in China. They are as yet imperfectly known. Tsuga chinensis, Masters,* a 

 native of the high mountains of Szechuan, is closely allied to Tsuga diversifolia, and, 

 like it, has pubescent young shoots. It differs in the cones, which are quite sessile, 

 and have very lustrous scales. The leaves are described as being green beneath ; 

 but this is probably an inconstant character. 



Tsuga yunnanensis, Masters,^ which was discovered by P^re Delavay in the 

 mountains near Likiang in Yunnan, is unknown to me. Franchet considers it to be 

 closely allied to T. Sieboldii. 



TSUGA PATTONIANA, Hooker's Hemlock 



Tsuga Pattoniana, Seneclauze, Conif. 21 (1867) ; Engelmann, in Brewer and Watson, Bot. California, 



ii. 121 (1880); Masters, Gard. Chron. xii. 10, fig. i (1892). 

 Tsuga Hookeriana, Carrifere, TraiU Conif. 252 (1867); and Lemmon, Erythea, vi. 78 (1898). 

 Tsuga Mertensiana, Sargent, Silva N. Amer. xii. 77, t. 606 (1898), and Trees N. Amer. 51 (1905); 



Kent, Veitch's Man. Coniferm, 468 (1900). 

 Pinus Mertensiana, Bongard, Vigit. de Sitcha, 54 (1832). 

 Pinus Pattoniana, Parlatore, D. C. Prod. xvi. 2, p. 429 (1864). 



Abies Pattoniana, Balfour, Rep. Oregon Assoc, i (1853) > Murray in Lawson, Pin. Brit. ii. 157 (1884). 

 Abies Hookeriana, Murray, Edin. New Phil. Joicrn. 289 (1855); and in Lawson, lac. cit. 153. 

 Abies Williamsonii, Newberry, Pacific R. R. Report, vi. pt. iii. 53, t. 7, fig. 19 (1857). 

 Hesperopeuce Pattoniana, Lemmon, Rep. Calif. State Board Forestry, iii. 128 (1890). 



A tree, occasionally attaining in America 1 50 feet in height, with a girth of 1 5 feet. 

 Bark dark cinnamon in colour, deeply divided into rounded connected scaly ridges. 

 Shoots brownish-grey, and densely pubescent. Branchlets in different planes, the 

 shorter and lateral ones usually arising on the upper side of the longer and terminal 

 ones, and disposed at right angles to them, giving a tufted appearance to the branch. 

 Leaves radially arranged on the branchlets, not markedly different in size, f to i inch 

 long, curved, linear ; apex usually rounded and obtuse, rarely acute ; upper surface 

 convex and keeled towards the apex ; lower surface rounded with a median groove ; 

 both surfaces with about eight lines of stomata, which are sparse and do not form 

 conspicuous white bands ; margin entire. Buds brownish, ovoid, acute at the apex, 

 composed of a few closely imbricated, strongly keeled scales. 



Cones sessile, about two inches long, oblong cylindrical, tapering at the apex 

 and slightly narrowed at the base, composed of five series of scales, each series with 



' Journ. Linn. Soc. (Bot.) xxvi. 556 (1902) ; Abies chinensis, Fianchet, /aurn. de Bot. 1899, p. 259. 



^ Journ. Linn. Soc. (Bot.) loc. cit.; Abies yunnanensis, Franchet, loc. cit. p. 258; and cf. also Masters, yowrK. Linn. 

 Soc. (Bot.) xxxvii. 421 (1906), who identifies the specimens from Szechuan with this species; but judging from Franchet's 

 description, they are the other species. 



