38 WILSON EXPEDITION TO CHINA 
Populus alba, var. tomentosa Wesmael in Bull. Soc. Bot. Belg. XXVI. 373 
(1887).— Burkill in Jour. Linn. Soc. XXVI. 535 (1899). 
Populus alba Burkill, l. e. (non Linnaeus) (1899). — ?Nakai in Jour. Coll. 
Sci. Tokyo, XXXI. 211 (Fl. Kor. 11.) (1911). 
Populus pekinensis L. Henry, Rev. Hort. 1903, 355, fig. 142. 
Populus alba, var. seminuda Komarov in Act. Hort. Petrop. XXII. 20 (1903). 
Populus glabrata Dode in Mém. Soc. Hist. Nat. Autun, XVIII. (Extr. Monog. 
Inéd. Populus, 27, t. 11, fig. 25») (1905). 
CHINA. Chili: Siwantze, G. E. Simon (ex Carriére, type); near Peking, 
Skatschkow (fide Maximowiez); same locality, E. Bretschneider; same locality, 
S. W. Williams (‘common over northern China, 50 feet high, timber not durable, 
flowers in April"); Yellow Temple, near Peking, Sept. 16, 1903, C. S. Sargent 
(“leaves very lustrous”); Peking, October 7, 1905, J. G. Jack. Chekiang: 
Shanghai, cultivated in Public Garden, 1908, D. Macgregor. 
A picture of a cultivated specimen of this tree will be found under Nos. 650 and 
0321 of the collection of Wilson photographs and. also in his Vegetation of Western 
China, No. 403. 
18. Populus adenopoda Maximowiez. See p. 23. 
19. Populus Sieboldii Miquel in Ann. Mus. Lugd.-Bat. IIl. 29 (1867), exclud. 
plantis masculis. — Wesmael in De Candolle, Prodr. XVl. pt. 2, 327 (1868); in 
Mém. Soc. Sci. Hainaut, lI. (Monog. Populus, 57) (1869). — Dippel, Handb. 
Laubholzk. 11. 192, fig. 91 (1892). — Koehne, Deutsche Dendr. 80 (1893).— 
Schneider, ZU. Handb. Laubholzk. Y. 17, fig. 3 h-i, 7 h-1 (1904). — Dode in Mém. 
Nat. Hist. Autun, XVIII. (Eztr. Monog. Inéd. Populus, 32, t. 11, fig. 33) 
(1905). — Ascherson & Graebner, Syn. Mitteleur. Fl. IV. 29 (1908). — Gomboca — 
in Math. Termesz. Közl. XXX. 131 (Monog. Gen. Populi) (1908). — Henry in © 
Elwes & Henry, Trees Gr. Brit. & Irel. 1794, t. 408, fig. 6 (1913). 
Populus tremula, var. villosa Franchet & Savatier, Enum. Pl. Jap. 1. 463 (non 
Lang) (1875). — Maximowiez in Bull. Soc. Nat. Mosc. LIV. 49 (1879). — 
Shirasawa, Icon. Ess. For. Jap. 1. 37, tab. 18, figs. 1-10 (1900). — Matsumura 
Ind. Pl. Jap. Il. 7 (1912). 
aa ASIA. Saghalien: Korsakof, rare, June 1908, U. Faurie — 
o. * 
JAPAN. Hokkaido: Hakodate 1861, C. Mazimowicz; Shibetsu, July 12, 1884, — 
K. Miyabe; (near Mori, September 26, 1892, C. S. Sargent. Hondo: without - 
locality, P. von Siebold (type, ex Herb. Lugd. Bat.); prov. Mutsu, prope Aomori, 
in sylvis, May 1902, U. Faurie (Nos. 5085, 5087, 5088); same locality, June 1905, 
U. Faurie (No. 6644); prov. Shimotsuke, Lake Chuzenji, August 11, 1905, J. @ 
Jack; Nikko, April 25, 1904, N. Mochizuki; prov. Shinano, above Narai, alt. 
1200 m., September 3, 1905, J. G. Jack. 
i This Japanese species seems to be distinct in the rather close dentation of its 
eaves. 
This tree is widely distributed in Japan from about central Hondo northward 
through Hokkaido to southern Saghalien. In Hondo it is not plentiful, but 1n 
Hokkaido it was formerly very abundant; but as its wood makes the best match- 
splints in Japan it has been promiscuously felled for this purpose. In the govern- 
ment forests in the more inaccessible parts of Hokkaido it still remains in fair quan- 
tity. Itis a tree of medium size with smooth grayish-green bark, and is very like — 
the common Aspen (P. tremula Linnaeus) in habit and general appearance, and like | 
that species it produces suckers freely. EH. w 
