26 f; i5i;, X iä--\t m m m ii*^ .n. n vi 1 1. 



Uli the rucky suiiiniit of Mt. Kainui, in the Island of ()l<u.sliiii, giowiiiLj together 

 with lichens and mosses. The plant is said to grow also on the rock)' cliffs near 

 Tsurikake and some other places in the same island. 



The Island Okushiri, bathed by a warm branch cuneni of the Kuroshiwo, has 

 a mild climate. As a consequence, among its flora, we find many interesting 

 southern elements, wnich are either very rare or entirely unknown in tiie main- 

 land of Hokkaido. As exam[)les, we may cite Cyinbidium virens Lindl., Loiiicera 

 stropkiophora Franch., Diyoptcris laccra Ü. K. var. suhtripartita Miyabe & Kudo, 

 and Aniisia japonica HI. 



106. Cypei'US difTormis I— Spec. PI. ed. 2. p. 61 ; Kunth, Enum. PI. II. p. 

 38; Ledeb. Fl. Ross. IV. p. 242; Maxim. Prim. Kl. p. 297; Rgl. Tent. Fl. Ussur. 

 p. 159; Miq. Prol. Fl. Jap. p. 73; Fr. et Sav. Enum PI. Jap. II. p. 104; Clarke, 

 in Hook. f. Fl. Brit. Ind. VI. p. 599 et l'"orb. et Hemsl. Ind. Fl. Sin. III. p. 210; 

 Kom. P"l. Mansh. I. p. 331 ; Matsuni. Ind. PI. Jap. II. 1. p. 140; Nakai, Fl. Korea. 

 II. p. 286 et Bot. Mag. Tokyo XXVI. p. 190. 



Cyperus Gocrlngii Steud. Syn. II. p. 24. 



NoiM. J/\p. Tama-gayatsuri. 



Hab. Hokkaido. Vxow Isliikari : Teine (K. Konilö!'^ Sept. 26, 1906); Has- 

 sabu (M. Takenouchi I June 7, 1917). 



DiSTKiB. Hokkaido, Honshu, Kiushiä, Formosa, Korea and widely dis- 

 tributed throughout tropical and temperate regions of Asia, Europe and Africa. 



107. Juncellus serotinus C. B. Clarke, in Hook. f. Fl. Brit. Ind. \T. p. 

 594 et P'orb. & Hemsl. Ind. Fl. Sin. III. p. 208; Matsum. Ind. PI. Jap. II. I. p. 

 154; Nakai, Fl. Korea. II. p. 280 et Bot. Mag. Tokyo XXVI. p. 199. 



Cypcnts serotinus Kottb. Desc. et Ic. Gram. j). 31 ; Kunth, Enum. II. p. 19; 

 Diels, Fl. C. China, p. 227; Kom. Fl. Mansh. I. p. 332. 



Cyperus japoniciis Miq. Prol. Fl. Jap. p. 72 ; Fr. et Sav. Enum. PI. Jap. II. 103. 



Cyperus serotinus Rotlb. var. Jepauperata Fr. et Sav. /. c. p. 102. 



NoM. Jap. Mizu-gayatsuri, Ushi-gayatsuri. 



Hab. Hokkaido. Prov. Shiribeshi : Yoichi (Y. Tokubuchi ! Aug. 7, 1894); 

 Zcnibako (Y. Tokubuchi ! Sept. 1 5, i 869). — Prov. Ishikari : Sapj)oro (S. Tanou- 

 ») ;!£ ^ ^ ^- 



