26 THE BOTANICAL MAGAZINE. [ voi. xxvni. No. 325. 



Hab. Prov. LSE (after Yokusai Iinuma); Prov. MUSASHI 

 (K. Serizawa ! ; T. Making !). 

 A rare species. 



Hydrocharis Morsus ranse Linn. Sp. PI. p. 1036. 

 var. asiatica (Miq.) Making. 



Hydrocharis asiatica Miq. F1. Ind. Batav. III. (1855), p. 

 239, Ann. Mus. Bot. Lugd.-Bat. III. (1867), p. 194, et Prol. 

 Fl. Jap. (1866-67), p. 160 ; Franch. et Say. Enum. PI. Jap. 

 II. (1879), p. 19 ; Maxim. Fl. As. Orient. Fragm. in Bull. Soc. 

 Nat. Mosc. (1879), p. 59 ; Debeaux, Fl. Shangh. (1875), p. 

 112; AscHERS. ET GuRKE in Engl, et Prantl, Nat. Pfl.-Fam. 

 II. 1 (1889), p. 258. 



Hydrocharis Morsus ranae C. H. Wright in Journ. Linn. 

 Soc. XXXVI. p. 2 (1903), quoad pi. Chin.; Matsum. Ind. PI. 

 Jap. II. 1 (1905), p. 32, non. Linn. 



More robust, larger in all parts, usually crowded and 

 widely covered the surface of water. Stolons floating and 

 widely diffuse, attaining about 6 mm. in diameter ; internodes 

 usually long. Leaves snbnumerous to few fasiciculated, floating 

 or often rising out of the water, entirely green (more or less yel- 

 lowish, not deep green), attaining about 6 cm. long, 6^ cm. 

 broad ; petiole attaining about 23 cm. in length and about 

 6 mm. in diameter. Fruit about If cm. across. Seed ellip- 

 soid, subdensely patently long-papillose, with a funicule at base. 



Nom. Jap. Tochi-kagami, Dbgame-no-kagami, Dbgame-hasu, 

 Dbgame-dzuru, Koma-no-ashigata, Suppon-no-kasa, Suppon-no- 

 kagami, Yatsu-bana. 



Hab. JAPAN. 



The typical one, which is common in Europe, is not found 



Vallisneria spiralis Linn. Sp. PI. p. 1015; Franch et 

 Say. Enum. PI. Jap. II. p. 18. 



Nom. Jap. Sekishd-mo, Ito-mo, 6-itomo, Hera-mo, Hira-mo. 



JAPAN (T. Making! ^ and g). 

 forma minor Making. 



