SALICACEAE. — POPULUS 17 



northeast of Sungpan Ting, upland thickets, alt. 3000-3300 m., 

 August 1910 (No. 445^; bushy tree, 6-7.5 m. tall; sterile). 



In the herbarium it is not easy to distinguish this species from the nearly related 

 P. lasiocarpa Oliver, but according to Mr. Wilson's description, and judging by the 

 young living plants in the Arnold Arboretum P. Wilso7iii seems to be a very distinct 

 species. It is readily distinguished from P. lasiocarpa by its habit, by the gla- 

 brous and purple, not tomentose and yellowish branchlets and by the color of 

 the leaves. These are bluish green above and rather whitish gray beneath, while 

 the leaves of P. lasiocarpa are clear-green above and greenish and a little shining 

 beneath. The shape of the leaves of P. Wilsonii is round-ovate, and not so deeply 

 cordate at the base as the more broadlj' oblong leaves of P. lasiocarpa. The 

 nearest relative to P. Wilsonii seems to be P. glauca Haines (see p. 30). 



This is a rare tree in western Hupeh and in Szech'uan, where it grows in forested 

 country between 1300 and 3300 m., especially near watercourses. In the forests 

 it is pyramidal in outline with rather thin ascending-spreading branches and dense 

 foliage; in the open the outline is more or less columnar and the branches are short 

 and spreading. The dark bluish-green leaves are strikingly handsome, and in habit 

 and general appearance it reminds one of Idesia polycarpa Maximowicz. Pictures 

 of this Poplar will be found under Nos. 090 and 099 of the collection of my photo- 

 graphs. E. H. W. 



Populus lasiocarpa Oliver in Hooker's Icon. XX. t. 1943 (1890). — 

 Burkill in Jour. Linn. Soc. XXVI. 536 (1899).— J. H. Veitch in 

 Jour. Hort. Soc. Loud. XXVII. 65, fig. 27 (1903). — Schneider, III. 

 Handb. Lauhholzk. I. 17 (1904). — Dode in Mem. Soc. Hist. Nat. 

 Autun, XVIII. {Extr. Monog. Ined. Populus, 66) (1905). — Ascherson 

 & Graebner, Syn. Mitteleur. Fl. IV. 51 (1908). — Gombocz in Math. 

 Termesz. Kdzl XXX. 120 {Monog. Gen. Populi) (1908).— Henry in 

 Elwes & Henry, Trees Gr. Brit. & Irel. VII. 1846, t. 408, fig. 9 

 (1913).— Bean, Trees & Shrubs Brit. Isl. II. 215 (1914). — Skan in 

 Bot. Mag. CXLI. t. 8625 (1915). 



Populus Fargesii Franchet in Bull. Mus. Hist. Nat. Paris, 11. 280 (1896). 



Western Hupeh: North and south of Ichang, woods, alt. 1300- 

 2300 m.. May 1907 (No. 706, in part; tree 16-24 m. tall, girth 1.25- 

 1.65 m.); same locality, June 1900 and 1901 (Veitch Exped. No. 384, 

 in part; tree 7-13 m. tall; ripe fruits); Hsing-shan Hsien, woodlands, 

 alt. 2000 m., July 1907 (No. 706, in part; tree 20 m. tall, girth 1.25 

 m.) ; Fang Hsien, woodlands, common, 1800-2300 m., June 1910 (No. 

 706, in part) ; without locality, May 1904, mountains, 2500 m. (Veitch 

 Exped. No. 4538; tree, 20 m. tall); district of Chienshih, alt. 1300- 

 2000 m., common in mountains, A. Henry (No. 5423", type; good 



