n KTRODCCnON. 



Iii thc coursc of my studies since iast year, 1 liavc found 

 many ncw spccics to bc added to thc flora of Formosa. Among 

 tlicm, tlic following genera* arc ncw to our flora. 



Ca^Mn, represented by C. Morii H.vyata wliicli is related to a Japanese 

 species, C. qmiqucfdia MiQ. 



Madajn, representcd bv M. cordata E. Bi;. wliicli is widely distriliuted 

 tlu'ougli Chiua aud Japau, but is rather rare iu this island. 



Eutrema, represented by E. liederasfdia F. et S. Avhich is peculiar to 

 Jaf)an aud Formosa. 



Cascaria, represeuted by C. Mcrrilli ILiYATA, ^vhich is related to sume 

 1'Jiililipiue species. The geuiis is mentioned luider the Samydacese iu 

 Bexthaji aud Hookee's fuudameutal work.** Li luy oijiuion, however, it 

 should be refened to the Bixiuese, so far as the preseut plaut is eoucerued, 

 after the hmitation of tlie two families (Samydacefe aud Bixineije) 

 meutioned iu the same work. The genus is referred to the Flacourtiacese 

 § Caseariese*** in Esgleks system. 



Salomonia, represeuted by S. dricta S. et Z. which exists only in 

 Japan aud Formosa. 



BMandrium, represeuted by M. morri-sonmontanuiu Hayata aud two 

 other sj)ecies, all endemic to the islaud. 



Arenaria, represeuted by A. pctidata Hayata which clo^ely resembles 

 A. scri^njllifolia Lixx. 



Eyssoptcris, represented by a Phihppiue sijecics, R. Camimjiana A Juss. 



Clmochcton, represeuted by Ch. kusuktiscnsc H.\.yata whicli is closely 

 related to Ch. hoiKjkongcnse Tdtcher. 



Cassinc, represented by C. illiciifdia H.\yata aud two other species, all 

 endemic to Formosa. 



Pi/gcum, represeuted by a PhiHppiue si^ecies, P. Prcslii Merr. 



Sanguisorha, represeuted by S. formosana Hayata, which is very 

 uear to S. qfjicinole Ldjx. 



Oxfcoineles, represeuted by 0. nnfhyUidifdia LlXDL. The species is 

 distributcd in Japau, the Bouin, Sandwich, Maiugaia, aud Pitcaim Islauds. 



* It sUould be niideit.tocH3 tliat I have not countod in tUese geneia any genus ontside of 

 Formosa, though they are mentioued In this work. 



** Besiha:.! et Hookek, Gcner-.i Plautanim I. p. 791. 



*»* Engleb, A u. Gilq. E., Syllabus der Pflanzenfamilien (1912) p. 268. 



