40 ^ 35 X m-it mmmm is. n n. 



KuriraJi (Miyabe ! July 29, 1894); Musamai (M. Nalcamura !'> Sept. 19, 1886); 

 Shitjxkara (Sukeo Ito I'^ Aug. 1895) ; Shakubetsu (M. Nakaraura ! July 30, 1888) ; 

 Akkeshi (Faurie, n. 1248, Oct. 25, 1885) ; Kusliiro (Faurie, n. 4866, Sept. 18, 

 1889). 



DiSTRro. Amur- region, Maucliuria, Corea, Housiu and Hokkaido. 



The study of a large collection of the specimens of the present sp)ecies made 

 in Honsiu and Hokkaido, shows that there are considerable variations in some 

 characters of this species. The size of the inflorescence varies from a small 

 anthela to a large difused one. The branches of the inflorescence are generally 

 weak, although there are some which are decidedly strong. The papilla, on which 

 Franchet and Savatier laid stress as being a specific character, are, as Buchenau 

 has shown, nothing more than stomata, and they also .vary in number and 

 prominence. Our plant agrees perfectly with Juncus iMpillosus Fr. et Sav. as 

 well as with J. niponensis Fr. Buch. in all its important characters. It is intense- 

 ly green ; and its fruits are pyramidal in shape and twice as long as the perianth, 

 whose segments are narrow and acuminate, and whose inner segments are longer 

 than the outer. It seems to us that it is proper to retain the Franchet and 

 Savatier's name for the plant, and regard the Buchenau's as synonymous. 



8. Juncus prominens (Fr. Buch.) Miyabe et Kudo. nom. nov. 



J. falcatKS E. Mey. var. y prominens Fr. Buch. Juncac. p. 247. fig. 116 ; 

 Matsum. Ind. PI. Jap. 2. p. 184. 



Greenish, perennial herbs. Stolons horizontal, strong, covered with scales ; 

 scales straw- or sometimes dark -colored, many-nerved, ovate-lanceolate, acute or 

 sometimes acuminate at the apex. Stems green in color, whitish at the base, 

 generally erect, straight, sometimes ascendent, smooth, distinctly sulcate, terete, 

 not provided with papilla or septa, usually tall, 26-41 cm long, or some- 

 times shorter, 16-20 cm high (mostly in the specimens collected in the 

 Southern Kuriles). Basal leaves falcate, acuminate, variable in length, usual- 

 ly much shorter than the stem, but sometimes slightly shorter than or rarely 

 as long as the stem, 3-20 cm long, 1-3 mm broad, finely many nerved, 

 not provided with aepia, ; cauline leaves one or two, green or sometimes dark- 

 green, falcate, acuminate, many-nerved, 6-14 cm long, 1-3 mm broad, 

 generally shorter than the inflorescence. Inflorescence terminal, 2-5 cm long, 

 anthelate, usually 3 -headed ; central head sessile ; lateral ones always pedunculate; 



1) *H^- 2) V'Mm^ 



