PINACEAE. — TSUGA 37 



girth 2-6 m.); west of Kuan Hsien, cliffs, alt. 2600-3600 m., June 

 1908 (No. 2098, in part; tree 12-25 m. tall, girth 2-^ m.); south-east 

 of Tachien-lu, forests, alt. 2600-3300 m., common, July 1908 (No. 

 2098, in part; tree 20-50 m. tall, girth 2-4 m.); Wa-shan, forests, alt. 

 2600-3600 m., common, Jime and October 1908 (No. 2099; tree 10- 

 40 m. tall, girth 2-6 m.). Yunnan: near Mo-so-yu in woods at 

 Koutoni, January 1890, J. M. Delavay (No. 4618, type); in woods 

 at Peetsao-lo, alt. 2800, April 1886, /. M, Delavay, 



This species is only known to us from Yunnan and western Szech'uan and is 

 much less widely distributed than T, chinensis Pritzel from which it is readily dis- 

 tinguished by its rufous-grey, more setulose shoots, narrower leaves rounded, not 

 emarginate at the apex and alwaj's very white on the underside, and by its smaller, 

 dull colored cones composed of fewer and thinner scales which are slightly re- 

 curved at the apex. The two species are very distinct. Tsuga yunnanensis is 

 closely related to the Himalayan T, c^umosa Eichler, which has rather larger, more 

 pointed leaves, and slightly longer and more pointed cones. 



Tsuga yunnanensis occurs on Mount Omei and is fairly common on Wa-shan and 

 south-east of Tachien-lu. It has usually more massive branches than T. chinensis 

 but is otherwise very similar. It bears the same colloquial name (Tieh-sha) and 

 the timber is used for the same purposes as that of T. chinensis, 



A picture of T, yunnanensis will be found under No. 332 of the collection of 

 Wilson's photographs. 



Tsuga chinensis Pritzel in Bot Jahrb. XXIX. 217 (1900). 

 Masters in Jour. Linn. Soc, XXVI. 556 (1902) ; XXXVII. 421 (1906). 

 Beissner, Handh. Nadelhokk. ed. 2, 82 (1909). — Patschke in BoL 

 Jahrb, XLVIII. 639 (1913). 



Abies thii-sha David, Jour, de Trois. Voy. I. 343 (nomen nudum) (1875). 

 Abies Tsuga Franchet in Nouv. Arch. Mus. Paris, six. 2. VII. 97 (PL David. 



I. 287) (non Siebold & Zuccarini) (1884). 

 Abies dumosa, var. chinensis Franchet in Jour, de Bot. XIII. 258 (1899), quoad 



specimen Fargesianum. 

 Abies chinensis Franchet in Jour, de Bot. XIII. 259 (1899). — Bois in Bull. 



Sac. HorL France, s6r. 4, I. 230 (1900). 

 Tsuga dumosa^ var. chinensis Pritzel in Bot. Jahrh. XXIX. 217 (1900). 

 Tsuga Sieboldi Pritzel in Bot. Jahrh. XXIX. 217 (non Carridre) (1900),— 



Masters in Jcmr. Unn. Soc. XXVI. 556 (1902); XXXVII. 421 (1906); in 



Jour. Bot. XLI. 270 (1903). 

 Tsuga yunnanensis Masters in Gard. Chron. ser. 3, XXXIX. 236, fig. 93 (pro 



parte) (1906), non Masters in Jour. Linn. 5oc. XXVI. 556 (1902) i; XXXVII. 



421 (1906). — Bean in Kew Bull Misc. Inform. 1910, 176. 



* The short description agrees fairly well with T. yunnanensis, but the specimens 

 quoted belong at least partly to T. chinensis; the cones figured apparently 

 represent those of the latter species, while the leaves probably are those of T, 

 yunnanensis. 



