2 



— 185 — 



Species circ. 20 in boreali-hemisphaerica incola, quarum 5 in Korea 

 media et boreali spontaneae, et tres exoticae late plantatae. 

 Conspectus sectionum. 



jPetioli apice laterali compressi 2 



iPetioli apice teretes. 3 



''Gemmae pilosellse. Amenta spicata vel racemoso-spicata. Sta- 

 mina 8-10. Trepidce 



Gemmae glabrae. Amenta mascula racemosa vel paniculata. 

 Stamina 15-30 Aigeiros 



{Gemmae pubescentes non viscosas. Stamina 4-8 Leuce 

 Gemmae glabrae viscosae. Stamina 10-60 Tacamahaca 



i-i a m in 



QfJ§ Populus alba LlMR^US 



Populus sect. Leuce Duby in de Candolle, Bot. Gallic, ed. 2, I, 

 p. 427 (1828), pro parte — Reichenbach, Fl. Germ. Excurs. II, p. 173 

 (1831), pro parte— Koch, Syn. Fl. Germ. & Helv. ed. 1, p. 660 (1837), 

 pro parte— Spach, Hist. Veg. X, p. 379 (1841), pro parte ; in Ann. 

 Sci. Nat. 2 ser. XV, p. 28 (1841), pro parte — Trautvetter in Lede- 

 bour, Fl. Ross. Ill, pt. 2, p. 626 (1851), pro parte— Grenier & Godron, 

 Fl. Franc. Ill, pt. 1, p. 143 (1855), pro parte— Wesm^el in DC. Prodr. 

 XVI, sect. 2, p. 324 (1868), excl. syn. Leucoides— Lange in Willkomm 

 & Lange, Prodr. Fl. Hisp. I, p. 233 (1870), pro parte— KOCH, Dendrol. 

 II, pt. 1, p. 483 (1872), pro parte— Dippel, Handb. Laubholzk. II, 

 p. 190 (1892), pro parte — Kcehne, Deutsch. Dendrol. p. 78 (1893), pro 

 parte— Schneider, Illus. Handb. Laubholzk. I, p. 16 (1904). 



Syn. Populus §1. Populi albce Lamarck & DC. Syn. Fl. Gall, 

 p. 179 (1806), pro parte. 



Balsamiflua Griffith, Notul. PL Asiat. IV, p. 382 (1854). 



