INTRODUCTION. 3 



4. Collections l)v Messrs. T. Kawakami ami G. Nakahaka. 

 Kecently the Formosan Government bus l)eeii carrying out bota- 

 nical surveys in tbe island. Tbe ";entlemen above mentioned were 

 engaged in the work; and one of the present writers, B. Hay ATA, 

 ])eing in connection with it, took up the work of determining the 

 specimens. So all the materials were sent to him for study. The 

 specimens thus determined were finally presented to the Herbarium 

 of the Botanical Institute by the Formosan Government. 



Besides our own work, the few families mentioned below were 

 determined by various other specialists : 



1. Cyperaceœ (excepting Carex), by Prof. C. B. Clarke. 



2. Carex, by Rev. G. Kükenthal. 

 o. Gramineœ, by Prof. E. Hackel. 

 4. Filices, by Mr. Y. Yabe. 



In conclusion, we feel bound to express our hearty thanks 



to those collectors, Avho have afforded the valuable materials to 



our Herbarium; especially Bev. U. Faurie and Mr. T. Making, 



who not only generously put their important collections at our 



disposal, but also kindly supplied many useful observations for 



this paper. Thanks are also due to Prof. K. Miyabe for his 



kindness in sending the collection of the Sapporo Agricultural 



College at our request. We also wish to tender our gratitude 



to Messrs. T, Kawaka:^!! and G. Xakahaea, who assisted us 



by supplying material and in many other ways. To Prof. C. 



B. Clarke, Rev. G. Ki kenthal, Prof. K. Hackel and Mr. 



Y. Y'abe, we are much indebted for the trouble they have 



taken in the determination of species. 



November 12, 1905. 



J. Matsumura and B. Hayata, 



Botanical Institute, CoUe<ie of Science, 



hiiju'riid University, Tokyo. 



