63. RUBIACE^, 97 



22. JDamnacanthus. 



DicJiotomous Key to tlie JFormosan Daynnacanth.is. 



( 1 ) Leaves ovate, smaller 2-3 cm. long, spiny D. indicus. 



Leaves lanceolate, linear nearly 10 cm. long, less spiny or not at all 

 spiny , D. angustifdia. 



Damnacanthus angustifolius Hayata F1. Mont Formos. p. 113. t. 



XV. 



Hab. Arisan. 



Damnacanthus indicus G^Eiiir. ; Hayata F1. Mont. Formos. p. 114. 



Hab. Arisan, Mt. Morrison, Hinokiyama. 



DiSTEiB. Eastern India, Central China, the Loo-choo islands and Japan. 



23. Psychotria Lnw. 

 Key to tJie Formosan Species. 



Erect, leaves ellii)tical or lanceolate, 14 cm. long, 4 cm. broad, acute at 



the apex, attenuate at the base P- elliptica. 



Kepent on the ground or on a trunk, branches much divaricate, leaves much 



smaller, obovate or oblong, 4 cm. long 1^ em. broad P. serpens. 



Fsychotria elliptica Ker. ; Matsum. et Hayata Enum. PI. Fbrmos. 

 p. 194. 



Hab. Pachina, Hokkokei, Giran, Tonsonpi, Taito, Senton, Kelung, 

 Kusshaku. 



DiSTEiB. Kwangt.ung, Hongkong, Hainan. 



Psychotria serpens Lbsn. ; Matsum. et Hayata Enum. PI. Formes. 

 p. 195. 



Hab. Maniyama, Hokkokei, Kotosho, Pacliina, Taiton, Kelung. 

 Disteib. Central and Southern China and Corea. 



24. GeopMla Don. 



Geophila reniformis Don. ; Matsum. et Hayata Enum. PL Formos. 

 p. 195. . 



