FLORA OF THE KURILE ISLANDS. 259 



CUPULIFEB^. 



232. Betula alba, L., subsp. latifolia, var. Tauschii, Kegel ! in Bull. Mo.sc. 18G5, p. 399, t. 7, 



f. 11-14, and in DC. ri'odi-. xvj, i). 103; Fr. & Sav. Enum. i, p. 455. 

 Ilah. Etorofu, at Shibetoro, and Arimoi. 



Distrih. Middle and noilliern Japan, Mancliui'ia and Siberia, at Nasimovo, and by 

 Lake Baical. 



233. Betula Ermani, Cham, in Linnsea, vr, p. 537, t. G, f. D; Ledeb. Fl. Ross, iir, p. 653; 



Trautv. & Mey. Fl. Och. ]). 83; Keg. & Til. Fl. Ajan. ]). 119; Trautv. in Max. 

 Prim. Fl. Amur. p. 252; Kegel, in DC. Prod, xvi, p. 176. — Var. typica, Reg. 

 Bull. Mosc. 1865, p. 415; Max. Mel. Biol, xri, p. 923. 

 JIa7>. J^/orofii, at Fiu'ubetsu and Xobori on the Arimoi side. 



Disfrib. Aleutian Islands, Ivamtschatka,tlielvurile Islands, and Yezo; Nemuro! and 

 Saruru Sands! 



The species is distributed in several forms in castei-n Siberia, Kamtschatka and ad- 

 jacent islands, Manchuria, Saghalin, and northern and middle Japan. 



234. Alnus viridis, DC. Fl. Fr. Ill, p. 304.— Var. sibirlca, Kegel in Bull. Mosc. 1865, p. 



422. and in DC. Prodr. xvi, p. 182; Fr. & Sav. Enum. i, p. 45(5. Alnasfer fruti- 

 cosl(.s,'Le(.M:>. Fl. Ross. Ill, p. 655 ; Trautv. & Mey. Fl. Och. p. 85 ; Trautv. inMax. 

 Fl. Amm-. p. 257; F. Schm. Fl. Sacb. p. 175. 

 ITah. Kurile Islands (ex Pallas). Etorofa, at IN^obori, on the Arimoi side. 

 Distrih. Alpine districts of Europe; Siberia from the Ural to Kamtschatka; Dahu- 

 ria, Manchuria, Saghalin, northern and middle Japan, the Aleutian Islands, northern 

 !North Amei-iea and Greenland. 



235. Alnus incana, Willd. Sp. IV, p. 335. — Var. hirsuta, Spach, Rev. Bet. in Ann. Sc. ISTat. 



ser. 2, XV, p. 207; Ledeb. Fl. Ro.ss. in, p. 656; Reg. in Bull. Mosc. 1865, p. 434, 

 and in DC. Prodr. XVI, p. 189; Trautv. in Max. Fl. Amur. p. 258; F. Schm. Fl. 

 Sach. p. 175. 



JI(/h. Sliikotan, on hillsides. Kurile Islands {ex Georgi). 



Distrih. Yezo, Saghalin, Kamtschatka, eastern Sibei'ia, Manchuria and Dahuiia. 



The species is widely distributed in Europe, northern temperate Asia and Xoith 

 America. 



236. Quercus grosseserrata, Blume, Ann. Mus. Lugd.-Bat. i, p. 306; DC. Prodr. xvi, ]). 



16. Q. crisjjula, var. grosseserrata, Miq. Ann. Mus. Lugd.-Bat. i, p. 104; Fr. 

 & Sav. Enum. i, p. 446. 



Ilah. Etorofu, at Furubetsu and Kobori on the Arimoi side. 



Distrih. Japan. 



The absence of fruit in the original specimens very naturall^y led Miquel to unite this 

 species Avith Q. crisjmla, for there is ceitainly a close resemblance in their leaves. The 

 fruit of Q. crispiila is, however, verv ditferent from that of Q. grosseserrata. In the 

 former the cup is deepci', embracing about half the cylindi-ic nut, falling off' with it when 

 ripe; Avliile in the latter the cup is hemispherical, enclosing about one-third of the ovoid- 

 oblong nut which falls oft' free when ripe. 



MEMOInS ISOSTON SOC. NAT. HIST., Vol,. IV. 30 



