Observations on the Flora of Japan. 



(Continued from Vol. XVIII. p. 160.) 



By 

 T. Makino, 



Assistant in the Botanical Institute, Science 

 College, Imperial University of Tokyo. 



All Known Species of the Japanese Listera. 

 LISTERA K. Brown in Ait. Hort. Kew. ed. 2, V. p. 201. 



Analytical Key. 



(Labellum entire (not cleft), linear-lanceolate, elongato- 

 linear above L. japonica Bl. 

 Labellum bifid 2. 



(Labellum: basal teeth none or obscure 3. 



w lLabellum : basal teeth well developed 4. 



(Labellum : lobes usually close (very rarely divergent) ; 

 basal teeth none. Leaves situated in the lower 

 portion of the whole plant L. Savatieri Maxim. 



Labellum: lobes divergent; basal teeth very minute 

 and obscure. Leaves situated in the middle of the 



whole plant ." I- Yatabei Makino. 



f Labellum : lobes linear or lato-linear, few or sub-several- 

 nerved 5. 



Labellum : lobes short broad and oval, several or sub- 

 numerous-nerved L. nipponica Makino. 



.Labellum 5i-8i : mni. long; lobes lato-linear, obtuse or 

 acute and often pauci-dentate at the apex ; basal 



teeth turned towards the column and clasping it L. shikokiana Makino. 



Labellum 2±-3% mm. long ; lobes linear, tapering towards 

 the apex ; basal teeth spreading and curved for- 

 wards L. cordata R. Br. 



Listera japonica Blume, Coll. Orchid. Archip. Ind. et Jap. p. 136, 

 tab. 38, fig. 2, et tab. 48, fig. E ; Miq. Prol. Fl. Jap. p. 141 ; Makino in 

 Bot. Mag., Tokyo, VII. (1893) p. 66. 



Diphryllum japonicum 0. Kuntze, Kev. Gen. PI. II. p. 659. 



