TSniA DIVERSIFOLIA. 467 



Tsuga .nn.lmianu, Engelmaim in Hot. Gazette, VI, 223 (1881). Sargent in 

 f'Jjird. Chron. XXVI. 1886 , p. 780, with tig.; Garden and Forest, 11/267, with tig.; 

 and Silva N. Amer XII. U9, t 604. Mayr, Wald. Xordamer. 196. H^issm-r, 

 Nadelholzk. 406, with tig. Masters in Journ. R. Hort. Soc. XIV. -J55. 



Allies Carolinians, Chapman, Fl. ed. II. Suppl. 650 (1887). 



The existence of a second species of Tsuga in the Atlantic States 

 of North America was not even suspected till Professor L. E. Gibbes 

 detected the subject of this notice on the southern Alleghanies in 

 1850 ; a discovery that came as a surprise both to botanists and to 

 horticulturists, as the region had presumably been thoroughly explored 

 previously. Tsuga caroliniana has since been found in considerable 

 numbers on the rocky banks of streams on the Blue llidge mountains 

 from south-west Virginia to north-east Georgia, at elevations varying 

 from 2,500 to 3,500 feet and in places even 1,000 feet higher, 

 .scattered among other trees, but rarely in groups of more than half 

 a dozen together. It was introduced into Britisli gardens in 1886 

 through the Arnold Arboretum of Harvard University, and has thus 

 far proved hardy in the neighbourhood of London. 



Tsuija caroliniana is chiefly distinguished from the type species, 

 T. caMi'lewi*, with which it is sometimes found associated in its native 

 habitat, by its larger and darker leaves of a somewhat different 

 anatomical structure and by its larger cones with scales much longer 

 than broad and which stand out at nearly a right angle to the axis 

 when mature. 



Tsuga diversifolia. 



A large tree frequently .80 feet high with a trunk 3 4 feet in 

 diameter covered with dark reddish brown' bark. Branches relatively 

 slender, spreading or slightly ascending and much ramified at the distal 

 end. Branchlets very slender, the youngest shoots pubescent. Buds 

 globose, dark chestnut brown. Leaves persistent two three years, 

 shortly petiolate, the petiole parallel with the axis of the shoot that 

 produces it, the blade spreading at a right angle to it, linear, emarginate 

 or obtuse, O25 0'5 inch long, lustrous green witli a shallow median 

 _roove above, paler with two greyish stomatiferous lines beneath. Cones 

 pendent, ovoid-cylindric, 0*75 inch long, shortly stalked, the stalk 

 clothed with persistent bracts, composed of four five series of 

 spirally arranged suborbicular scales, rugose on the exposed side. 

 .Seed-wing oblong, neaily as long as the scale. 



Tsuga diversifolia, Maximowicz in Melange. Biol. Acad. Sc. Petersb. VI. 373 

 (1866). Masters in Journ. Linn. Soc. XVIII. 514 ; and Journ. R. Hort. Soc. 

 XIV. 255. Mayr, Abiet. des Jap. Reiches, 61, Tafel IV. tig. 13. Beissner, 

 Nadelholzk. 396. Sargent, Forest Fl. Jap. 81, t. 25 ; Garden and Forest VI. 

 495, with tig.; and X. 491, tig. 63. 



Abies Tsuga, Hort. (not Siebold). 



Eng. Japanese northern Hemlock. Germ. Maximowicz' Tsuga. Jap. Kometsuga. 



Tsufja diversifolia was first recognised as a species distinct from 

 the Abies Tsuga of Siebold and Zuccarini by the Russian botanist 

 Maximowicz who described it under this name in the " Melanges 



