452 WILSON EXPEDITION TO CHINA 



10 mm. latum sericeum. Carpella ovata adpressissime ciliata 13 mm. longa 8 mm. 

 lata," while in 1915 the description is as follows: " Bracteae fructiferae ovatae, apice 

 acuminato-paucilobis, pilosae. Nux ovata, cuspidata 1.3 cm. longa." The leaves 

 resemble those of C. Sieholdiana Blume and especially those of var. mitis Maximo- 

 wicz which i ^ also credited by Nakai to southern Korea. Further investigations are 

 needed in order to decide if C. hallaisanensis is closely related to C. heterophylla 

 Fischer or is connected with the C. Sieholdiana group, the setose bristles of which 

 are sometimes wanting. 



8. Corylus Sieholdiana Blume, Mus. Bot. Lugd.-Bat. I. 310 (sphalm. C. Sibol- 

 diana) (1850). — Schneider, III. Handb. Lavbholzk. I. 150, fig. 83 n (pro parte) 

 (1904). — Bean, Trees & Shrubs Brit. Isl. I. 403 (1914). 



Corylus heterophylla, var. Sieholdiana A. De Candolle, Prodr. XVI. pt. 2, 130 



(1864). 

 Corylus rostrata Maximowicz in Mem. Acad. Sci. St. Petersbourg, ser. 7, X. no. 



11, 10 in adnot. (Rhamn. As.-Or.) (non Alton) (1866). — Franchet & Sava- 



tier, Enum. PI Jap. I. 4.52 (1875). 

 Corylus rostrata, var. Sieholdiana Maximowicz in Mel. Biol. XI. 319 (1881) ; in 



Bidl. Acad. Sci. St. Petersbourg, XXVII. 538 (1882). — Herder in Act. 



Hort. Petrop. XI. 363 (1890). — Winkler in Engler, Pflanzenr. IV.-61, 52, 



fig. 16 B (1904). 

 Corylus heterophylla Dippel, Handb. Laubholzk. II. 129 (non Fischer) (1892), 



quoad syn. "C. Sieholdiana." 



JAPAN. Hokkaido: prov. Ishikari, Mt. Moiwa, thickets and woods, com- 

 mon, July 30, 1914, E. H. Wilson (No. 7311; bush 1.5-3 m. tall; with almost ripe 

 fruits). Hondo: prov. Suruga, Fuji-san, July 31, 1891, K. Waianabe (with un- 

 ripe fruits); prov. Kai, Mt. Minobu, April 2, 1905 (ex Herb. Sakurai; flowers; 

 the leaves of August 14, 1905, of the same specimen belong to C. heterophylla Fischer) ; 

 prov. Kozuke, around Karuizawa, tliickets, common, August 31, 1914, E. H. 

 Wilson (No. 7426; bush 1.2-2.4 m. tall; with ripe fruits); prov. Shinano, on 

 Tsubakura-dake, woodlands, common, alt. 950-1600 m., September 15, 1914, E. 

 H. Wilson (No. 7460; bu.sh 0.9-1.8 m. tall; with ripe fruits); Mt. Togakushi, 

 July 10, 1884 (ex Herb. Sci. Coll. Imp. Japan; with unripe fruits); on Jesoga-dake 

 (Jisoga-dake ?), July 1903, U. Faurie (No. 6649; with unripe fruits) ; prov. Shimot- 

 suke, Nikko, April 1, 1904, A^. Mochizuki (with male and female flowers); same 

 locality, August 8, 1905, J. G. Jack (with unripe fruits) ; same locality, P. von 

 Siehold (type ex Blume); Lake Chuzenji, August 12, 1905, J. G. Jack (with ripe 

 fruits); same locality, September 6, 1892, C. S. Sargent (shrub 1.8 m. tall; with 

 ripe fruits); prov. Uzen, Adzuma-yama, common in thickets, alt. 750-1300 m., 

 July 19, 1914, E. H. Wilson (No. 7215; bush 6 m. tall, with young fruits); prov. 

 Ugo, Chokai-san, September 14, 1892, J. H. Veitch (with old leaves and catkins); 

 prov. Mutsu, Aomori, forests, May 6, 1905, U. Faurie (No. 6816; flowering 

 branchlets); Iwagisan (? Iwaki Mt.), August 1905, U. Faurie (No. 6648; with 

 ripe fruits). 



These specimens represent the tjrpical form which seems to be most frequent in 

 central and northern Hondo, but according to Wilson's No. 7311 occurs also in 

 Hokkaido, at least in a somewhat intermediate form. It is characterized by its 

 obovate, obovate-oblong, elliptic or oval leaves which have a rounded or very 

 slightly cordate base and are mostly more or less gradually pointed at the apex; 

 their serration is rather acute, and they are not or only slightly lobed, while in the 

 var. mandshurica the leaves usually are more orbicular-obovate or almost rectan- 

 gular-elUptic, being often deeply cordate at the base and more truncate at the 



