226 K. MIYABE ON THE 



lieved by the inhaliitants of Etorofu to have great virtues in hysteria, and ishirgely I)ronglit 

 back l)y the Japanese sailors and fishermen who visit tliis ishmd. It is known there by 

 the name of lieuizarasa. 



ROSACEA. 



71. Prunus Ceraseidos, Max. Mel. Biol, xt, p. (398. Ceraseklos apetala, Sielj. & Zuee. 



Miinch. Abliandl. iii, p. 743, t. v, fig. 1. 1-8. Primus apetala, Fr. & Sav. Ennni. 

 ir, p. 329. 



Var. kurilensis. A straggling shrub; the bark of the young branches greyish or grey- 

 ish-brown and glal^rous; leaves appressed-hairy above, and more or less villose akmg 

 the veins beneath, oi-bicukar or roundish-oblong, or sometimes obovate at the end of the 

 l)ranehes, rounded or obtuse at the base, abi'uptly cuspidate at the a])ex, 7-12 (9)-veined, 

 prominently incised-seri-ate; teeth spreading, 1-3-serrate, and glandular at the ti|)s; pedi- 

 cels villose; drupe purplish-red (nearly ripened) ; putamen oval, smoothisli, with three 

 nearly parallel veins uear its keeled edge. The petiole measures 10-15 mm. long; the 

 blade, 70 X 52-85 X 60 ram.; the cuspidate tip, 8-12 mm.; the peduncle, 22 nun. long, 

 and the ]iutamen, 8x5 mm. 



Hah. In exposed hill tops along the coast; JiJtorofa, at Eubctsu and Shibetoro. 



All that I have seen in the above mentioned localities are straggling shrubs about 

 three or four feet high. The}' may grow lai-ger in less exposed places. 



The plant is most closely related to Primus Ceraseidos, Max. The shape and character 

 of the putamen, in these two plants, agree vevy well. The only prominent points of dif- 

 ference between them are in the form and texture of the leaves. In Prunus Ceraseidos, 

 they are broadly elliptical or obovate, and long-cuspidate, and their texture is less cori- 

 aceous than that of the Kurile plants. Such differences, however, may be accounted for 

 by the difference in their localities. In the absence of flowers (which are well charac- 

 terized in Primus Ceraseidos by the great development of the calyx-tube), it is difficult 

 to form any decided opinion as to whether the Kurile plants should be separated from 

 that species or not. So far as my materials allow me to judge, I am inclined to regard 

 it provisionally as a variety of Prunus Ceraseidos. 



Prunus Ceraseidos has been collected, thus far, only in the alpine and subalpine woods 

 of middle Japan. 



72. Prunus Maximowiczii, Rupr. in Bull. Acad. St. Petei'sb. XV, p. 131; Max. Prim. Fl. 



Amur. p. 89; F. Schm. Fl. Sach. ]). 125; Fr. & Sav. Emum. i, p. 118; Max. Mel. 



Biol. XI, p. 700. 

 IRib. Etorofu, in deciduous woods in the vicinity of Furubetsu and Arimoi. 

 The plant is found throughout the entire length of Japan; also in Corea, eastern Man- 

 churia and Saghalin. 



73. Prunus Ssiori, F. Schm. Fl. Sach. p. 124; Max. Mc'l. Biol, xi, p. 707; Fr. iVr Sav. 



]<]num. I, p. 119, 11, p. 330; Forbes & Hemsley, Index Fl. Sin. p. 221. 

 JIah. Etorofu, in deciduous woods in the vicinity of Furubetsu. 



Distrih. Southern Saghalin, northern and middle Japan, northeastern and central 

 China. 



