26 52. T.YTiinvrE-T:. 



( 2 ) Leaves oblanceolate, spatlmlato or otovate, flowers at the axils of the 



leaves from the top to the middle, not forming a distinct spike. (3) 



Leaves rounded, flowers in a distinct spike E. rotundiflora. 



B. indica. 

 ( 3 ) Leaves obovate 



\R. indica var. tdiginosa. 

 Leaves lanceolate B. densijlora var. formosana. 



Sotala densiflora Kcehne var. formosana Hayata in Matsum. et Hayata 

 Enum. PI. Formos. p. 149. Annual herb, very glabrous, base repent, stem 

 tetragonons, 14-15 cm. high. Leaves opposite or ternate, sessile, linear-oblong, 

 entire, 1 cm.-1.5 cm. long, 4-3 mm. broad. Flowers axillary, sessile, solitary, 

 minute, minutely 2-bracteolate, bracteoles linear 1.5 mm. long. Calyx tubuloso- 

 eampanulate 2 mm. long, dentate, primary teeth 5 acute valvate as long ,as 

 petals, with appendix at the sinus. Petals 5, inserted at the throat of calyx, 

 rounded, obtusely acuminate, very small. Stamens 5, inserted at the middle 

 of calyx-tube, filaments fihformed. Ovary obovoid, immersed within the calyx- 

 tul», 5-celled ; style short ; ovules oo, placenta axial. Capsules not yet 

 known. 



Hab. Pachina, Taihoku. 



Rotala indica Kcehne ; Matsum. et Hayata Enum. PI. Formos. p. 149. 

 Hab. Bankinsing. 

 DiSTRlB. Malaya to Japan. 



Sotala indica var uliginosa K(Eii\e ; MATSUisr. et Ha-yata Enum. PI. 

 Foi'raos. p. 150. 



Hab. Taihoku. 



DiSTBiiB. Malaya and India. 



Rotala leptopetala Kfi^HNjE; :MATSu:\r. et Hayata Enum. PI. Formos. 

 p. 150. 



Hab. Taito, Kisaijurokusha, Koshun, Takow. 

 DiSTEiB. China, Loo-choo, India, Malaya. 



Rotala mexicana Ch. et Sen. ; MATsrur. et Hayata Emnn. PI, Formos. 

 p. 150. 



Hab. Taihoku, 



