12<1 52. LYTIITUCT.T. 



(2) Leaves oblanceolate, spathulate or obovate, 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 ............ 7?. rotu/ulijtoro. 



E. indicn. 

 ( 3 ) Leaves obovate .......................... ] 



It. iinlicit var. idiginosa. 



Leaves lanceolate ...................... It. ifiwiI !.<( var. 



Rotala densiflora K<KHNK var. formosana HAYATA in MATSUM. et HA\ ATA 

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

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

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

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

 campanulate 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 filiformed. Ovary obovoid, immersed within the calyx- 

 tube, 5-celled ; style short; ovules y.. placenta axial. Capsules not yet 

 known. 



HAP,. Pachina, Taihoku. 



Rotala indica KCEHNE; MATSF.M. et HAY ATA Eimm. PI. Formos. p. 149. 

 HAD. Bankinsing. 

 DISTRIB. Malaya to Ja]:>an. 



Rotala indica var uliginosa KIKKM. ; M \rsr.M. et HAVATA Enum. PI. 

 Formos. p. 150. 



HAB. Taihoku. 



DISTPJB. Malaya and India. 



Rotala leptopetala KKHXE; MATSi;.\r. et HAY ATA Knmn. PI. Formos. 

 p. 150. 



HAB. Taito, Kisaijiirokusha, Koshun, Takow. 

 DISTEIB. China, T^oo-choo, India, Malaya. 



Rotala mexicana CH. et Son. ; MATSU^F. et HAY ATA Enum. PI. Formos. 

 p. 150. 



HAB. Taihoku. 



