MivABE ANT) Kudo : Mateeials fob a Flora op Hokkaido II. 39 



Later, however, be cliauged Lis opinion and treated it as a variety of L. ardica, 

 indoreing the opinion of Nilssou. According to the results of our study on the 

 specimens of the plant under consideration collected in the Northern Kiirilcs, and 

 also on those of L. ardica, arcuata and confusa, collected in the Tschuktschland 

 and Arctic Alaska by N. Hashimoto^\ we have come to the conclusion, that it 

 would Letter be treated as an independent species. It is no doubt very .similar 

 to L. ardica in its general cliaracters, from which it differs, however, in its 

 stronger stem, fimbriatel ower bract, larger heads and lanceolate perianth-segments, 

 which are crenulately denticulate toward the acuminate apex. It is also easily 

 distinguished from L. arcuata by its stronger foliaceous stem, and longer and 

 broader lower bract, which is longer than the inflorescence ; and from L. conficsa 

 by its inclo.sed fruit and by the difference in the relative length of stamens and 

 perianth-segments. 



6. Juncus tenuis Willd. in Linn. >Spec. PI. 2 (1799) p. 314; Britt. & 

 Brown, HI. EI. 1. p. 386 ; Fr. Buch. .Tuncac. p. 115. 



NoM. JAP. K'usa-i. 



Hab. Hokkaido. Prov. Neraiiro : Tomoshiri (D. Hoshi !^' Aug. 14, 1911). 



DiSTElB. North and South America, Europe, Australia and Japan (Honsiu 

 and Hokkaido). 



Our plant agrees perfectly with the descriptions of the present siiecies and 

 also with the American specimens. This is the first record of its occurrence in 

 the Flora of Hokkaido. 



7. Juncus papillosus Er. et 8av. Enum. PI. Jap. 2. (1879) pp. 98, 533. 

 J. nijmncnsis Fr. Buch. Monogr. Jimcac. p. 340 et Juncac. p. 193. — J. nni- 



lellifer Le'v'l. et Ynt. Bull. Soc. Bot. Franc. 51 (1904) p. 292, teste Fr. Buch. 



NOM. JAP. Ao-kdgai, Uosoha-kögaizekishö. 



Hab. Hokkaido. Prov. Oshima : Hakodate (Eaurie n. 3208, Oct. 18, 1887 ; 

 n. 5236, 8ept. 29, 1902).— Prov. Shiribeshi : Otaiii (Fam^e n. 185, Sept. 1905). 

 — Prov. Ishikari : Sapporo (Faurie n. 3052, Aug. 30, 1888). — Prov. Ibm-i : Abuta 

 (K. Miyabe !''^ Aug. 16, 1890) ; Hayakita (Miyabe & S. Arimoto !« Aug. 4, 1902). 

 —Prov. Hidaka:.Samani (Y. Tokubuchi !=^ Aug. 22, 1892); Abnrakoma (Toku- 

 buchi ! Aug. 18, 1892) ; Horoman (Tokubuchi ! Aug. 20, 1892) ; Sarmu (Toku- 

 buclu! Aug. 12, 1892).— Prov. Kushiro : Sempöji (Miyabe! Aug. 10, 1884); 



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