SALICACEAE. — POPULUS 33 
Populus balsamifera, var. suaveolens Burkill in Jour. Linn. Soc. XXVI. 536 
(pro parte) (non Loudon) (1899). — Shirasawa, Icon. Ess. For. Jap. 1. 37, 
t. 18, fig. 11-24 (1900). 
NORTHEASTERN ASIA. Mandshuria: ad fl. Amur., Sept. 1, 1855, R. 
Maack; ad fl. Li-Fudin, 1860, C. Mazimowicz; prov. Sheng-king, June 25, 1906, 
F. N. Meyer (No. 22; young shoots slightly angular !); Kabarovka, August 23, 
1908, C. S. Sargent; banks of Chita River, Chita, August 12, 1903, C. S. Sargent. 
Saghalien: without locality, Fr. Schmidt (ex Herb. Petrop.); Korsakof, July 
and September 1908, U. Faurie (Nos. 280, 280^, Kamtschatka: Petropav- 
lovski, 1853-56, C. Wright. ~ 
JAPAN. Hokkaido: Sapporo, Prov. Ishikari, May 1884, K. Miyabe; same 
locality, August 21, 1905, J. G. Jack; “in arena rivorum Kamikawa," July 1905, 
U. Faurie (No. 6642). Hondo: prov. Shimotsuke, Lake Chuzenji, August 11, 
1905, J. G. Jack. 
This magnificent Poplar grows to a larger size than any other species of eastern 
Asia, and ranks with the largest trees which grow there. Itis abundant in Hok- 
kaido, rather less so in southern Saghalien, and is rare in Hondo, where it occurs 
sparingly in the Nikko region and northward. At its best it is a tree from 27 to 30 
m. tall with a trunk 5 or 6 m. in girth. The branches are massive and wide- 
spreading and form a flattened rounded and somewhat oval crown. The bark is 
gray and deeply fissured on the trunk of old trees but smooth and yellowish-gray 
on the branches and also on the trunks of young trees. It is seen at its best in the 
moist bottom lands of river-valleys. Pictures of this tree will be found under Nos. 
X237, x238, x239, x244, x367, x507 of my collection of Japanese ee ce 
9. Populus szechuanica C. Schneider. See p. 20. 
Populus szechuanica, var. tibetica Schneider, n. var. 
Populus balsamifera Thomson, W. Himalaya & Tibet, 180 (1852). — Stewart, 
Punjab Pl. 204 (1869). — Hooker f., Fl. Brit. Ind. V. 638 (in part, not Lin- 
naeus) (1888). — Brandis, Ind. Trees, 640 (1906). 
Populus tristis Koehne, Deutsche Dendr. 83 (non Fischer) (1893), quoad speci- 
mina citata No. 2-4. — Henry in Elwes & Henry, Trees Gr. Brit. & Irel. VIL. 
1840, in adnot., 1841 (1913). 
A typo recedit gemmis, ramulis leviter angulatis ramisque et petiolis breviter 
pubescentibus, foliis initio utrinque deinde tantum nervis plus minusve puberulis 
v. subglabrescentibus etiam axi amentorum foemineorum hirtella. : 
Arbor ad 28 m. alta. Folia turionum ut videtur elliptico-lanceolata, basi sub- 
rotundata v. late cuneata, apicem versus sensim acuta, visa ad 12 cm. longa et ad 
5.5 em. lata, margine glanduloso-crenato-dentata, ramulorum fructiferorum ovata, 
basi plus minusve rotunda, apice acuta v. subacuminata v. late ovata v. ovato-ro- 
tunda, basi leviter v. distinctius cordata, apice plus min: acuminata, 10-14 cm. 
longa et 6-8.5 cm. lata, margine satis crebre glanduloso-dentata, pleraque ciliata; 
petioli 2-6 em. longi. Flores non vidi. Capsulae subsessiles, glabrae, ovoideo- 
globosae, 3-4-valvae. n : 
CHINA. Western Szech’uan: without precise locality, ravines, alt. 3000- 
3600 m., June 1904 (Veitch Exped. No. 4527; tree 16 m. tall, with smooth bark). 
INDIA. Kashmir: “Northwestern Tibet," cultivated, alt. 2000-4500 m., 
T. Thomson (ripe open fruits, type); Ladak, Khárbu Koma to Sháksi, southwest 
1 This specimen may represent the same form as P. suaveolens, var. 
Schrenk, see p. 19. 1 am not quite sure whether this is a form of P. suaveolens 
or P. Mazimowiczii. 
