MiYABE AND KUDO : MATERIALS FOR A FlORA OF HOKKAIDO. VII. 



167 



Hab. Saghalin. Pahmaito Detu (T. Miyake ! ^^ Aug. 19, 1906). 

 Kuriles. Paramoshiri : Chitose Bay (T. Matsubara ! ^^ J'jly 29, 1916). 

 DisTRiB. Saghalin, Northern Kuriles, Kamtschatka, Behring Island, Siberia 

 and North America. 



New to the Flora of Hokkaido. 



79. Sceptrocnide macrostachya Maxim. Mel. Biol. IX. p. 626. t. IX. f. 

 9-16; Fr. et Sav. Enum. PI. Jap. II. p. 492 ; Matsum. Ind. PI. Jap. II. 2. p. 47. 



NoM. Jap. Miyama-irakusa. 



Hab. Hokkaido. Prov. Oshima : Moheji (Maximowicz ! Oct. i86o); Be- 

 tween Kamiiso and Ono (F. C. Greatrex ! Sept. 23, 1916). 



DisTRiB. Honshij and Hokkaido. 



This interesting nettle was most critically studied by Maximowicz apparently 

 from the fresh specimens collected by himself in the vicinity of Hakodate. At 

 our request, Mr. Greatrex has kindly sent us the living root of the plant, which 

 seems to be remarkably long. In his letter he informed us that it would be ex- 

 tremely difficult to get the whole root of a plant ; one would have to dig up the 

 whole bank systematically ! The sting is very violent far worse than that of 

 Urtica dioica. 



80. Moehringia platysperma Maxim. Mel. Biol. IX. p. 35; Matsum. Ind. 

 PI. Jap. II. 2. p. 85. 



Arenaria platysperma Makino, Bot. Mag. Tokyo, VI. p. 49 ; Yatabe, Nihon 

 Shokubutsu Hen, p. 232. 



NoM. Jap. Yezo-fusiwta, Tachihakobe. 



Hab. Hokkaido. Prov. Oshima : Hakodate (Maximowicz). — Prov. Iburi : 

 Tomakomai (Y. Kudo & T. Yoshimi ! ^^ June 25, 191 5). — Prov. Ishikari : Nopporo 

 (Y. Kudo! June 24, 1916). 



DisTKiB. Hokkaido and Honshii. 



81. Ceratophyllum demersum L. Spec PI. ed. i. p. 992; Thunb. Fl. 

 Jap. p. 190; DC. Prodr. III. p. 73; Fr. et Sav. Enum. PI. Jap. II. p. 482; Britt. 

 & Brown, III. Fl. II. p. 46 ; Kawakami, Bot. Mag. Tokyo. XII. p. (225) ; Matsum. 



