127. CUPULIFERE! CORYLEX. 503 
Corylus Davidiana, Baill. Hist. Pl. vi. p. 224; Franchet, Pl. David. i, 
p. 278. 
CHIN: near Peking (David! Bretschneider, 714 !), Pohuashan 
(Bretschneider !), Jehol (David, 1694, ex Decaisne), Huangtu- 
liangtze (Palibin); Kansun: near Lantschen on the Hoangho 
(Piasezki ex Maximowicz), Lidshapu (Potanin!). Mus. Brit. ; 
Herb. Kew. 
Var. cinerascens, Franchet in Bull. Soc. Bot. Fr. xxxii. p. 27. 
Ostryopsis Davidiana, Dene.; Franchet in Journ. de Bot. 1899, p. 209. 
Yunnan: Mosoyn, near Lankong, at 7500 feet, on chalk hills 
(Delavay, 37, 830 !). Mus. Paris. 
The type also in Mongolia. 
1. Ostrya virginica, Willd. Sp. Pl. iv. p. 469; Mazim. in Mél. 
Biol. xi. p. 317. Var. japonica, Maxim. ex Sargent, Forest-Fl. 
Japan, p. 66, t. 22. 
Ostrya carpinifolia, Franchet in Journ. de Bot. 1899, p. 204. 
Ostrya japonica, Sargent, loc. cit. 
Huren: Fang (A. Henry, 6581!) ; SzECHUVEN : near Tchen- 
keoutin (Farges!). Mus. Brit.; Herb. Kew.; Mus. Paris. 
Japan and N. America. 
The forms of the New and Old Worlds differ from one another, 
and seem distinct enough to be maintained as varieties. 
1. Corylus Colurna, Linn. Sp. Plant. ed. 1, p. 999; A. DC. in 
DC. Prod. xvi. 2, p. 181; Boiss. Fl. Or. iv. p. 1176; Hook. f. FI. 
Brit. Ind. v. p. 625. “Var. chinensis, Burkill. 
Corylus chinensis, Franchet in Journ. de Bot. 1899, p. 197 
Yunnan: Gorges of Santchangkiou, between Tali and Hokin 
at 7200 feet (Delavay, 197!) ; Huren: S. Patung (4. Henry, 
7533!); Szecuven: N. Wushan (A. Henry, 7111!). Herb. 
Kew.; Mus. Paris. 
This variable species occurs in Central Europe, Asia Minor, 
and the Himalaya. 
2. Corylus ferox, Wall. Pl. As. Rar. i. p. 77, t. 87 ; A. DC. in 
DC. Prod. xvi. 2, p. 129; Hook. f. Fl. Brit. Ind. v. p. 625. 
Var. thibetica, Franchet in Journ. de Bot. 1899, p. 200. 
Corylus tibetica, Batalin in Act. Hort. Petrop. xiii. p. 91. 
Kansun: by the River Tshagon (Potanin!); Huren: Fang 
(4. Henry, 6778, 6778 A !), Ichang (A. Henry, 6087); Suenst : 
Thoupeishan (Giraldi!) SzEcuvEN: Tachienlu (Pratt, 51), 
