BETULACEAE. — ALNUS 507 



Alnus firma, var. Yaska Winkler in Engler, PJlanzcnr. IV.-61, 104 (1904). — ■ 

 Henry in Elwes & Henry, Trees Gr. Brit, (fc Irel. IV. 953, t. 268, fiR. 2 

 (1909)- — Matsumura, Ind. PI. Jap. H. pt. 2, 17 (1912). — Bean, Trees 

 <& Shrubs Brit. Isl. I. 180 (1914). 



Alnus yasha, var. typica Callier in Fedde, Rep. Spec, Nov. X. 227 (1911); 

 apud Schneider, III. Handb. Laubhohk. II. 889 (1912). 



Alnus yasha, var. macrocarpa Callier, 1. c. 227 (1911); I. c. 889 (1912). 



Alnus yasha^ var. microcarpa Callier, 1. c. 227 (1011); 1. c. 889 (1912). 



Alnus hirtella Koidzumi in Tokyo Bot. Mag. XXVII. 144 (1913). 



JAPAN. Hondo : prov. Suraga, slopes of Fuji-san from alt. 600 m. upwards, 

 thickets, abundant. May 8, 1914, E. H. Wilson (No. 6645; bush or small tree, 

 0.9-5 m. tall; flowers and old fruits); same locality, July 29, 1891, K. Watanahe 

 (fruits); same locality, L. Savatier (No. 1152; type of var. hirtella ex Franchet & 

 Savatier); prov. Sagami, Hakone mountains, common, April 17, 1014, E, IL 

 Wilson (No. 6427; tree 8 m. tall, girth 1.5 m.; flowers and old fruits); same 

 prov., Miyanoshita, August 25, 1892, C. S. Sargent (tree 7-10 m. tall, fruits); 

 Shinano prov., on Komaga-dake, August 29, 1880, J. Matsumura (fruits); same 

 prov., Nagasenka, October 24, 1892, C S. Sargent (small tree; fruits); same prov., 

 on Tsubakura-dake, forming tlilckets in beds of streams, September 13, 1914, 

 E. H. Wilson (No. 7449; slender tree or bush, 3-10 m. tall; fniits); samelocahty, 

 September 14, 1914, E. H. WHlson (No. 7452; bush or slender tree, 3-12 m. tall, 

 girth 0.3-0.45 m.; fruits); same prov., Otake-gawa, mountain slopes, common, 

 October 31, 1914, E. H. Wilson (No. 7752; small bushy tree, 5-9 m. tall; fruits); 

 prov. Kozuke, Mt. Asama, July 20, 18S0 (ex Herb. Sci. Coll. Univ. Jap.; fruits); 

 same place, July 1904, U. Faurie (Nos. 5791, 5792; fruits); same prov., Mt. 

 Myogi, August 12, 1912 (ex Herb. Sakurai; fruits); prov. Shimotsuke, Nikko 

 region, around Yumoto, common, October 19, 1914, E. H. Wilson (No. 7662; 

 small tree, 5-8 m. tall, girth 0.3-0.75 m. ; fruits) ; same prov., side of Lake Chuzenji, 

 not common, October 21, 1914, E. H. Wilson (No. 7674; small tree, 8 m. tall, 

 girth 0.9 m.; fruit.^); Nikko to Lake Chuzenji, roadside, October 26, 1905, /. G. 

 Jack (fruits); prov. Mino, Nojiri to Nakatsu-gawa, September 6, 1905, J. G. Jack 

 (fruits). Hokkaido: prov. Oshima, Hakodate, 1861, C. Maximowicz (flowera 

 and fruits; sub nom. var. multinervis) . 



The pubescence of the branchlets and petioles and the somewhat more abun- 

 dant pubescence of the leaves seem to be the only characters to separate this sub- 

 species from the type. The bracts of the male flowers are also sometimes ciliate 

 in the type, and the shape of the leaves is about the same in both forms, only the 

 leaves are usually somewhat narrower in subspec. hirtella. 



This is a small bushy tree not exceeding 10 m. in height, and very common in 

 woods throughout central Hondo between 500 and 1600 m. altitude. E. H. W. 



17. Alnus pendula Matsumura in Jour. Coll. Sci. Tokyo^ XVI. art. 5, 6, t. 3 

 (1902). — Schneider, III. Handh. Lauhholzk. 1. 804 (1906). — Rehder in Bailey 

 Stand. Cycl. Hort. I. 252 (1014). 



Alnus firrruif var. multinervis Kegel in Bull. Soc. Nat. Mosc. XXXVIH. pt. 2, 

 423 (1865); in De Candolle, Prodr. XVI. pt. 2, 183 (1868). —Winkler in 

 Engler, Pflanzenr. IV .-61, 104 (1904). — Henry in Elwes & Henry, Trees 

 Gr. Brit. <& Irel. IV. 952 (1909). — Bean, Trees & Shrubs Brit. IsL I. 180 

 (1915). 



Alnu^ jirma, var. mxdtinervia Franchet & Savatier, Enum. PL Jap. I. 457 

 (1875). — Shir asawa, Icon. Ess. For. Jap. II. t. 12, fig. 21-34 (1908). 



