BETULACEAE. — ALXUS 497 



— Komarov in Act. Hort. Petrop, XXll. 54 {Fl Mansh. II.) (1903). — Callier 

 apud Schneider, III. Handb. Lauhholzk. 1. 133, fig. 68 a-a^ 72 k (1904). — Rehder 

 in Bailey, Stand. Cycl. Hort. 1, 253 (1914). 



Alnus incana, var. kirsuta Spach in Ann. Sci. Nat. ser. 2, XV. 207 (1841). 

 Ledebour, Fl. Ross. III. pt. 2, 656 (1850). — Turczaninow in Bull. Soc, 

 Nat.Mosc.XXyUA0ii{lSo4:); Flor. Baical-Dahur. 11.133 ilSo(y). — Tmut' 

 vetter & Meyer in Middendorff , Sibir. Reise, 1. pt. 2, Bot. abt. 2, 86 {Fl. Ockot.) 

 (1856). — Maximowiez in Bull. Acad. Sci. St. Petershourg, XV. 139 (1856); 

 in Mel. Biol. II. 435 (1857). — Traut vetter in Mem, Sav. Etr. Acad. Sci. 

 St. Petershourg, IX. 258 (Maximowicz, Prim. Fl. Amur.) (1859). — Regel 

 in Nouv. Mem. Soc. Nat. Mosc. XIII. pt. 2, 155, t. XVII. fig. 1-2 {Monog. 

 Betulac. 97) (1861) ; in Mem. Acad. Sci. St. Petershourg, ser. 7, IV. 136 {Tent. 

 Fl Ussur.) (1861); in Bull. Soc. Nat. Mosc. XXXVIII. pt. 2, 433 (1865); 

 in De Candolle, Prodr. XVI. pt. 2, 189 (1808). — Dippel, Handb. LauWwlzk. 

 II. 164 (1892). — Herder in Act. Hort. Petrop. XII. 77 (1892). — Matsu- 

 mura in /owr. Coll Sci. Tokyo, XVI. art. 5, 12 (1902); Ind. PL Jap. II. 

 pt. 2, 17 (1912). — Winkler in Engler, Pflanzenr. IV.-61, 123 (1904).— 

 Shirasawa, Icon. Ess. For. Jap. II. t. 13, fig. 1-12 (1908). — Nakai in Jour, 

 Coll. Sci. Tokyo, XXXI. 204 {Ft. Kor. II.) (1911). 



Alnus tinctoria Sargent in Garden <& Forest, X. 472, fig. 59 (1897). 



Alnus hirsuta, var. vulgaris Callier in Schneider, III. Handb. Lauhholzk. I. 133 

 (1904). 



Alnus hirsuta, var. Cajanderi Callier, 1. c. 133 (1904). 



Alnus hirsuta^ var. vidgaris, f. typica Callier in Fedde, Rep. Spec. Nov. X. 233 

 (1911). 



Alnus hirsuta, var. vulgaris, f. macrophylla Callier, 1. c. 233 (1911). 

 Alnus sihirica, var. hirsuta Koidzumi in Tokyo Bot. Mag. XXVII. 144 (1913). — 

 Nakai in Tokyo Bot. Mag. XXIX. 46 (1915). 



NORTHEASTERN ASIA. Transbaikalia: ''ad fl. Angaram superiorem," 

 1834, N. Turczaninow (co-type in Herb. Gray; fruits). Amur : Bureja Mts., 1858, 

 G. Radde (young fruits). Ussuri : coast region, lat. 44-45° N. 1859, C. Wiljord 

 (fruits). Saghaiien: near Toyohara, abundant in swamps, August 4, 1914, 

 B. H. Wilson (No. 7326; bush or tree, 3-15 m. tall, girth 1.5 m.; young fruits); 

 "in humidia Korsakof," October 5, 1908, U. Faurie (No. 286; fruits); without 

 locality, Fr. Schmidt (fruits). 



JAPAN. Hokkaido: prov. Oshima, Hakodate, 1861, C. Maximowicz (young 

 fruits); same prov., Onuma-koen, moist woods and thickets, common, June 

 26, 1914, E. H. Wilson (No. 7262; bush or tree, 4-9 m. tall, girth 0.9 m., 

 branches slender, horizontally spreading; young fruits); prov. Kushiro, forming 

 pure woods, August 12, 1914, E. H. Wilson (No. 7377; tree up to 18 m. tall, girth 

 3 m.; young fruits); prov. Ishikari, Poronai, September 19, 1892, C. S. Sargent 

 (tree 7-10 m. tall; apparently one of the type specimens of A. tinctoria; sterile); 

 same place and date, common, C. S. Sargent (tree 13-17 m. tall; type of A. tine- 

 ^la; fruits). 



According to Sargent ^s description the typical A. tinctoria is nothing else than 

 A. hirsuta. He says: " the leaves . . . are . . . clothed below with soft, close, rufous 

 pubescence, which also covers the upper side of the slender midribs and primary 

 veins." The type was gathered in Hokkaido, and the specimens in the Herb. Am. 

 Arb. cannot be distinguished in the sense of Callier and Komarov as a glabrescent 

 form or species different from A . hirsuta, of which I have seen a co-t>T)e. Of the 

 tJl^lcal A. hirsuta Callier has distinguished several varieties and forms (apud 



