BETULACEAE. — CORYLUS 443 



Nakai's description of Taqiiet's number agrees well enough with Faurie's specimen 

 before me. The narrow-oblong or lanceolate fruiting bracts are 1.7-2 cm. long and 

 6-9 mm. broad. 1 am not sure about the real relationship of this species, which 

 needs further observation. See also the remarks under C. Tschonoskii Maximowicz. . 



14. Carpinus polyneura Franchet. See p. 430. 



Carpiaus polyneura, var. Wilsoniana Winkler in Bot. Jahrh. L. Suppl. 506 

 (1914). 



CHINA. Western Szech'uan: Mt. Omei, May 1904 O^eitch Exped. No. 

 5791, type; tree 10 m. tall, young fruits). 



This variety needs further investigation, as it was collected in a locahty where 

 there are so many endemic species. The leaves are longer and even more pointed 

 than in the type. The ripe fruits are not yet known. 



CORYLUS L. 



Corylus tibetica Batalin in Act. HorL Petrop. XIIL 102 (1893).— 

 Vilmorin & Bois, FruL Vilmorin. 206, fig. (1905). — M. L. de Vilmorin 

 in Rev. HorL 1910, 203, fig. 82, t. (1910). — Schneider, III Handb. 

 Lauhholzk. II. 895 (1912). — Hickel in Bull Soc. Dendr. France, 1912, 

 105, fig. 4 f (1912). — Bean, Trees & Shrubs BHl Isl I. 403 (1914). 



Corylus ferox, var. thihetica Franchet in Jour, de Bot. XIII. 200 (1899).— 

 Burkill in Jour. Linn. Soc. XXVI. 503 (1899). — Diels in Bot. Jahrb. XXIX. 

 281 (1900). — Winkler in Engler, Pflanzenr. IV.-61, 45 (1904). — Rehder 

 in Bailey, Stand, Cycl. Hart. II. 859 (1914). 



Western Hupeh : Fang Hsien, woods, alt. 1800-2400 m., October 



1907 (No. 712; bush 3-7 m. tall; fruiting branchlets) ; same locality, 

 1889, A. Henry (Nos. 6778, 6778^; old leafy branchlets with catkins); 

 Changyang Hsien, alt. 2100 m., April 8, and fall 1904 (Veitch Exped. No. 

 57; shrub 4 m. tall; flowers and ripe fruits). Western Szech'uan : 

 southeast of Tachien-Iu, woods, alt. 2200-2800 m., July and October 



1908 (No. 1301, in part; bush 3-7 m. tall; with fruits); same locality, 

 October 1908 (No. 1301, in part; bark of thin tree 7 m. tall, girth 

 0.3 m.); Tachien-lu, common in woods, alt. 1800-2400 m., October 

 1910 (No. 4283; bush 3-7 m. tall; with fruits); same locahty, A. E. 

 Pratt (No. 5; with young fruits); west and near Wen-ch'uan Hsien, 

 woods, alt. 2200-2800 m., July and October 1908 (No. I30I^ bush 

 3-7 m. tall, old leafy branchlets with catkins). Eastern Kansu: 

 Amdo, valley of Tshagon River, July 10, 1885, G. N. Potanin (fruiting 

 type, ex Batalin). 



According to my own observations this species also occurs in southeastern 

 Szech'uan and northern Yunnan, but I have not my specimens at hand. It is dis- 

 tinguished from the Himalayan species by its more copiously spinose fruithag bracts, 

 ^d by its more distinctly acuminate bracts of the male flowers, the tips of these 

 bracts being glabrous and mostly glandular. See also my remarks under the section. 



