444 WILSON EXPEDITION TO CHINA 



As a large bush or small bushy tree this species is abundant in the woods and 

 forests of western Ilupeh and of Szech'uan. E. H. W. 



Corylus chinensis Franchet in Jour, de Bot. XIII. 197 (1899). 

 Schneider, III. Handb. Laubholzk. II. 896, fig. 560 c (1912). — Bean, 

 Trees & Shrubs BriL Isl I. 401 (1914). — Rehder in Bailey, Stand. 

 Cycl HorL II. 859 (1914). 



Corylus Colurna, var. chinensis Hurkillm Jour. Linn. Soc. XXVI. 503 (1S99). — 

 Diels in Bot. Jahrb. XXIX. 281 (1900). — Winkler in Engler, Pflanzenr. 

 IV.-61, 50, fig. 15 (19ai). — Bean in Kew Bull. Misc. Inform. 1911, 327 

 (1911). 



Western Hupeh: Patung Hsien, woodlands, etc., alt. 900-1600 

 m., January 1909 (No. 1453; tree 3-17 m. tall, girth 0.3-2.4 m.; 

 branchlets with old leaves and catkins); Changlo Hsien, woods, alt. 

 900-1600 m., September 1907 (No. 2281, tree 10 m. tall, girth 0.6 m.; 

 with ripe fruits); Hsing-shan Hsien, oak woods, alt. 1800-2200 m., 

 June 2, 1907 (No. 2281%* tree 13 m. tall, girth 0.6 m.; sterile); Fang 

 Hsien, alt. 1200 m., June 1910 (No. 4553; huge tree, 40 m. tall, girth 

 5.4 m.; sterile); Patung Hsien, 4. HeJiry (No. 7533; leafy branchlets 

 with catkins). Eastern Szech'uan: Wushan Hsien, woodlands, 

 alt. 900-1600 m., September 1907 (No. 2280; tree 17 m. tall, girth 2-4 

 m.; Icixfy branchlets with catkins) ; same locality, A. Henry (No. 7111; 

 leafy branchlets with catkins). Western Szech'uan: Hung-ya 

 Hsien, roadside, one tree only, alt. 1100 m., September 8, 1908 (No. 

 2282; fruiting branchlet). Yunnan: "in silvis montanis faucium ad 

 Santchang kion, in via e Tali ad Ho-king," alt. 2200 m., /. Delavay 

 (Nos. 197 and 212, types, ex Franchet). 



In the typical form which 1 have collected myself in 1914 not far from the type 

 locality, the involucre of the fruits is not distinctly elongated into a tube, but the 

 margin is deeply lobed, and the lobes arc more or less furcate, the nutlet being not 

 or less distinctly hidden than in the forms from Szech*uan and Hupeh of which I 

 have seen ripe fruits. The size of the thick-shelled nuts seems to be variable, as 

 well as the size and thickness of the involucres; the nuts are especially thick m 

 Wilson's No. 2282 compared with those from Yunnan or with those of a cultivated 

 specimen in Hort. Vilmorin at Les Barres in France. So far as I can see there is 

 otherwise no real difference between the Yunnan plant and those from Szech*uan 

 and Ilupeh, but I have not been able to compare male flowers. 



There is another Tree Hazel in eastern Szech'uan, *' in silvis ad Heoupin prope 

 Tchen-keou-tin," alt. 1400 m., P. Farges (No. 1307), which was first described as C. 

 rostrata, var. Fargesii by Franchet (in Jour, de Bot. XIII. 199 [1899]), under which 

 name it is kept by Winkler (in Engler, Pflanzenr. IV.-61, 53, fig. 14 F [19041), 

 while Burkill referred it to C. mandshurica, var. Fargesii in Jour. Linn. Soc XX\ !• 

 505 [1899]). Diels followed him (in Bot, Jahrb. XXIX. 281 [1900]). Burkill and 

 Winkler saw Franchet's type, but they did not refer any other specimen to this 

 variety. 1 made it a species, C. Fargesii {III Handb. Laubholzk. II. 896, fig- 561 e 



