Observations on the Flora of Japan, 



{Continued from p. 184.) 



By 



T. Makino. 



Lecturer of Botany in the Science College, 

 Imperial University of Tokyo. 



Halophila eupnlebia Makino, sp. nov. 



Halophila ovalis Ha- 

 yata, Mater. Fl, Formos 

 in Journ. Coll. Sc. Imp. 

 Univ. Tokyo, XXX. 1 

 (1911), p. 309, non Hook, 

 fil. 



A submerged marine 

 perennial herb. Stem 



long-creeping, hypogseous, 

 laxly ramose, rooting at 

 nodes, stout-filiform, 1— 

 1^ mm. in diameter, gla- 

 brous, pale ; internodes 

 about i-4cm. long; 

 root one to a node, long, 

 filiform, clothed with 

 white delicate root-hairs. 

 Leaves in pair at each 

 node of the stem, arising 

 upon sand or mud, petio- 

 late, enclosed the base of 

 petioles with one of scales, 

 which are placed at each 

 node of stems ; lamina 

 oblong, broadly oblong, 



(Fig. XV.). 



Fig. XV. mnfj. 



