160 WILSON EXPEDITION TO CHINA 



I unite under S. opaca the following specimens vtdthout making an attempt to 

 decide whether this species is a hybrid between S. viminalis Linnaeus and S. Caprea 

 Linnaeus or whether some of the specimens mentioned represent hybrids of a differ- 

 ent origin. 



NORTHEASTERN ASIA. Amur: without locality, C. Maa:imomc3 (cf and 

 9); Saghalien : Toyohara, moorlands, side of streams, abundant, August 3 ,1914, 

 E. H. Wilson (No. 7334; bush 1.8-3 m. tall; sterile); same locahty and date, E. 

 H. Wilson (No. 7344; bush 1.8-6 m. tall; sterile, looks like S. Caprea X S. sachali- 

 nensis); Dui, along the river, beginning of June, 1860, P. von Glehn (type of S. 

 opaca, with fruits; ex Schmidt). 



JAPAN. Hokkaido: prov. Ishikari, Sapporo, April and September, 1877, 

 Watase {d',9 and sterile); same locahty, April 21, 1890, May 26, 1890, Y. Toku- 

 huchi (cf and with fruits; partly as S. sachalinensis, partly as S. stipularis); same 

 locality, October 15, 1890, April 21 and 26, 1891, May 2, 1891, Y. Tokubuchi 

 (cf, 9 and sterile; partly as S. stipularis); same locality, May 27 and August 

 11, 1891, Y. Tokubuchi (with fruits and sterile; as <S. sachaliiiensis) ; same locahty, 

 April and July 1893, Y. Tokubuchi (9 and with fruit; as S. sachalinensis); 

 same locahty, September 17, 1892, C. S. Sargent (tree 7-10 m. tall, girth 0.3 m.; 

 sterile); same locahty, " secus aquas," June 12, 1908, U. Faurie (No. 260; 

 with fruits); same locahty. May 31, 1903, S. Arimoto (9; as S. sachalinensis); 

 same locality, H. Shirasawa (sterile); Maruyama, May 7, 1892, Miura (cf 

 and 9 ; as S. sachalinensis) ; prov. Oshima, near Mori, September 13, 1892, 

 C. S. Sargent (small tree; sterile). Hondo: prov. Rikuzen, Sendai, August 27, 



1905, J. G. Jack (sterile); prov. Shimotsuke, Nikko to Lake Chuzenji, road- 

 side, October 25, 1905, J. G. Jack (sterile) ; Lake Chuzenji to Lake Yumoto, August 

 11, 1905, /. G. Jack (sterile); shores of Lake Yumoto, September 6, 1892, C. S. 

 Sargent (sterile); Nikko, June and October 2 (Nos. 88, 89 ex Herb. Tokyo; sterile); 

 prov. Shinano, on Tsubakura-dake, side of torrents, common, alt. 1600 m., E. H. 

 Wilson (No. 7499; small tree 4.5-7 m. tall; sterile, looks like S. viminalis X S. 

 Caprea); Kanogawa, 1862, C. Maximowicz (No. 5; 9 type of von Seemen); prov. 

 Musashi, Toda, April 14, July 22, 1913 (9 and sterile; looks like *S. viminalis X S. 

 purpurea) ; Tokyo, Meguro, April 1910, H. Shirasawa (9 and sterile) ; prov. Suruga, 

 near Gotemba, side of streams, April 14, 1914, E. H. Wilson (No. 6456; bush 1.8-2.4 

 m. tall; 9, looks like a hybrid with S. purpurea). Shikoku: prov. Tosa, Nano- 

 kawa, April 3 and May 20, 1888, K. Wata7iabe (9 and sterile). 



Very nearly related to S. opaca seems also S. aeqxdtriens Seemen (Salic. Jap. 70, 

 1. 15, fig. E-G [1903]), from Hokkaido, prov. Ishikari, Sapporo, May 1892, Y. Toku- 

 buchi (type; 9 ), which is only known from young flowering branchlets. The pedicel 

 and the style are both as long as the ovary; the stigmas are hnear and bifid; the 

 gland is oval and only J^ the length of the pedicel. 



146. Salix Siuzevii Seemen in Fedde, Rep. Spec. Nov. V. 17 (1908), apud Siuzev 

 in Trav. Mus. Bot. Acad. Sci. St. Petersbourg, IX. No. 2 (1912) ex Toepffer, Salicol. 

 Mitt. No. 5, 248 (1912). — Wolf in Act. Hort. Petrop. XXVIII. 527 (1911). 



NORTHEASTERN ASIA. Ussuri: Nikolsk Ussuriiski, April 29, 1905, P. 

 V. Siuzev (No. 34, type, 9, ex von Seemen). Maritime Prov. : Sachoba river, 



1906, Paltchevsky (d' and 9, ex Wolf). 



Von Seemen states that this Willow belongs to sect. Viminales and is most nearly 

 related to S. opaca Andersson, differing from it especially by the shorter and nar- 

 rower gland and by the shorter entire style. According to the description the 

 pedicel is as long or even longer than the capsule, the style only }4 the length; 

 the stigmas are short and thin; the lanceolate leaves are grayish green beneath 

 and are up to 13 cm. long and 2 cm. broad. 



