— 356 — 



It is now my pleasant duty to express my hearty thanks to 

 each of the gentlemen above mentioned, for their obliging readiness 

 in undertaking the work, as well as for the care with which they 

 have carried it out. 



The ten parts of which the "Flora of Koh Chang" consists, 

 includes in all 1513 plants determined as to species, of which 194 

 were new to science. These species may be systematically divided 

 as follows: 



Phanerogams 521 of which 57 new; pteridophyta 72, of which 

 6 new; mosses (Bryales and Hepaticæ) 61, of which 23 new; algæ 

 669, of which 38 new; lichens 95, of which 39 new, and fungi 95, 

 of which 31 new. 



In addition, a number of species are noted under the different 

 genera as not identified with certainty. 



The material having been distributed among numerous special- 

 ists, the work upon the different sections naturally could not 

 progress at a uniform rate, in consequence of which it was 

 impossible to let the various groups appear in systematic order, 

 and again, I have not always succeeded in placing all the species 

 belonging to one family in the same part of the publication. To 

 the present Part X is therefore appended an index, drawn up by 

 Carl Christensen, M. Sc., which will, it is hoped, in some degree 

 obviate the difficulties thus arising. 



Especial thanks are due to my friend Dr. C. H. Ostenfeld, 

 Inspector of the University Botanical Museum at Copenhagen, for 

 the valuable assistance which he has afforded me in the placing 

 and treatment of the material. 



Finally, I beg to thank the Danish Botanical Society for accord- 

 ing space to the "Flora of Koh Chang" in their Journal, and also 

 the Carlsberg Fund, who have, besides granting me financial support 

 towards my stay in Siam 15 years ago, and during the subsequent 

 treatment of the material, also borne the printing expenses. 



Carlsberg Laboratory, Copenhagen, 

 December 14, 1915. 



Johs. Schmidt. 



