PLANTS FROM PEITAIHO 159 



Keys for the identification of the families and general 

 are provided, more or less completely, in textbooks, but 

 specific descriptions of many Peitaiho plants are quite 

 inaccessible and it is for this reason that a short description 

 of the most striking differences between the species has 

 been added. 



Identifications of duplicates have kindly been furnished 

 by Professor E. S. Sargent of the Arnold Arboretum for the 

 trees and woody plants; by Professor A. S. Hitchcock of the 

 Department of Agriculture Washington, for grasses. Dr. 

 O. Stapf the Keeper of the Herbarium of the Eoyal Botanic 

 Gardens, Kew, England; Dr. E. D. Merrill of the Phillipine- 

 Bureau of Science, with Mr. Wm. R. Maxon and Mr. E. P. 

 Killip of the Smithsonian Institute named all other flowering 

 plants, and Mr. Sun Ichi Ono procured identifications of 

 Marine Algae from Professor Kintaro Okamura of Tokyo 

 Imperial University and from Mr. M. Higashi those of 

 some Charas and fresh-water Algae. Without such gener- 

 ous assistance the compilation of this list would have been 

 an impossible task. Acknowledgment is also due to the 

 Peking Union Medical College for laboratory facilities kindly 

 furnished. 



N. H. Cowdry. 



There has been added to the index the Chinese names 

 both in character and the Romanised, as taken from the 

 dictionary of Botanical Terms published by the "Commercial 

 Press" of Shanghai, for the different natural orders and 

 genera. By so doing it is hoped to extend the usefuiness of 

 this excellent collection, many members of which the reader 

 will not find mentioned in the Botanical Dictionary. 



Date: December, 1921. 



Departments of Pharmacology and Anatomy, 

 Peking Union Medical College. 



DIVISION 1.— SPERMATOPHYTA. 



Subdivision 1. — Angiospermae. 

 Class 1. — Dicotyledones. 



Ranunculaceae. Crowfoot Family. 



Clematis heraclaefolia, DC— Lotu? Hills.— Erect, 2 ft. 

 widely spreading ; male flowers light blue ; leaves like 

 "Cow Parsnip." 



