MATERIALS FOR A FLORA OF HOKKAIDO. V. 



l!y 

 KiNGO MiYABE 



and 



YusHUN Kudo. 



:[[: m m m m ^> # v. 



g tlS ^ -^ 



X B rjfe # 



45. Hydrilla verticillata Royle, 111. Bot. Himal. t. 376 (1S39); Caspaiy, 



in Print;sh. Juhrb. I. p. 494; Hook. f. Fl. Brit. Ind. V. p. 659; Forb. ct Henisl. 

 Ind. Fl. Sin. III. p. i ; Aschers, u. Gurke, in Engl. 11. Prantl, Nat. Pfl.-fam. II. i. 

 p. 250. f. 184. a, b ; Konsh. Acta Hort. Peterop. XII. p. 394; Aschers, u. Gracbn. 

 Syn. Mitteleurop. Fl. I. p. 398 ; Kawakami, Bot. Mag. Tokyo XII. p. (225) ; Diels, 

 in Engl. Bot. Jahrb. XXIX. p. 220; Kom. Fl. Mansh. I. p. 237 ; Matsuni. ct Ha- 

 yata, Enum. PI. F'ormos. p. 405 ; Nakai, Fl. Kor. II. p. 216. 



Serpicula verticillata L. f. Suppl. y>. 416. — Hychilla verticillata, var. Roxbuyghii 

 Casp. 1. c. ; Miq. Prol. Fl. Jap. p. 159; Fr. ct Sav. Enum. PI. Jap. II. p. 17 ; Ma- 

 tsum. Ind. PI. Jap. II. 1. p. 32. — Hydnlla japoiiica Miq. 1. c; Fr. et Sav. 1. c. p. iS. 



No.M. ].\v, Kuroino. 



Hab. Yezo. Prov. Iburi : Lake Osatsu (Y. Tokubuchi ! '^ 1893). — Prov.Ku - 

 shiro : Lake Akan (Fiiurie! n. 10722, 1893 ; T. Kawakami ! -^ 1897 ; J. Hanzawa!''^ 

 1904); Lake Turo (J. Hanzawa ! 1904). — Prov. Kitami : I,ake Abashiri (Faurie ! 

 1899). 



DiSTKiB. Yezo, Honshu, Kiushu, Riukiu, Formosa, Korea, Amur-region, 

 Manchuria, China, Tropical Asia, Central Europe, Mauritius, Madagaskar and 

 Australia. 



As to the distribution of the species in the Japanese Archipelago, the Lake 

 Abashiri is probably its northernmost locality. 



46. Vallisneria spiralis L. Spec PI. ed. i. p. lOi 5 ; Vw et Sav. Enum. PI. 



1) ^ i)lü tk -^ BF, 2) )\\ ±. m äSfo 3) 4: 'M ifil. 



