— 193 — 



386 (1841); in Ann. Sci. Nat. 2 ser. XVI, p. 31 (1841)— Ledebour, 

 Fl. Ross. Ill, pt. 2, p. 628 (1851)— Grenier & Godron, Fl. Franc. 

 Ill, pt. 1, p. 144 (1855)— WESM^EL in DC. Prodr. XVI, sect. 2, p. 327 

 (1868)— Lange in Willkomm & Lange, Prodr. Fl. Hisp. I, p. 233 

 (1870)— Koch, Deutsch. Dendrol. II, pt. 1, p. 488 (1872)— Dippel, 

 Handb. Laubholzk. II, p. 198 (1892)— Kcehne, Deutsch. Dendrol. p. 

 78 (1893)— Schneider, Illus. Handb. Laubholzk. I, p. 5 (1904). 



Syn. Populus § Populi nigrce Lamarck & DC. Syn. Fl. Gall. p. 180 

 (1806). 



Populus sect. Aegirus Ascherson, Fl. Brandenb. p. 643 (1864). 



Populus subgn. Leuce Lauche, Deutsch. Dendrol. p. 316 (1880), pro 

 parte. 



Populus subgn. Eupopulus sect. Aegiri Dode in Mem. Soc. Hist. Nat. 

 Autun XVIII, p. 14 & 31 (1905). 



Populus II. Eupopulus I. Aegirus Ascherson apud Ascherson & 

 Gr^bner, Syn. IV, p. 31 (1908). 



Gemma? viscidae glabrae. Petioli apice plus minus laterali compressi. 

 Bracteas caducae. Flores masculi longe pedicellati. Stamina 15-30. 

 Antherse persistentes. Stigmata 2-4 cristata. 



No Korean species belongs to this section. However, the following 

 exotic plants are used extensively for silviculture. 



1. (a) Populus nigra Linn^us, Sp. PI. ed. I, p. 1034 (1753). 



Europa, Caucasus, Siberia. 

 (b) Populus nigra LiNN^US var. italica Du Roi, Harbk. Baumz. II, 

 p. 141 (1772). Tauria, Himalaya. 



2. Populus monilifera AlTON, Hort. Kew. ed. 1, III, p. 406 (1789). 



Regiones boreali-orientalis Americas septentrionalis. 



m mm a h <d % in 



