190 The Ottawa Naturalist. [December 



REVIEW. 



Macoun, John. Catalogue of Canadian Plants, Part VII. 

 LiCHENES AND Hepatic^, pp. 3 1 8. Geological Survey of 

 Canada. 1902. 



Since the publication of Part VI of this Catalogue ten years 

 ago there has been no more important contribution to Canadian 

 Botany than the volume recently published by the Geological 

 Survey Department. The author has succeeded in compiling. and 

 tabulating all our available knowledge of Canadian Bryophytes 

 and Thallogens, and Parts VI and VII taken together constitute 

 a work upon which all future study of these great classes in 

 Canada must be based. In Part VII, Prof. Macoun enumerates 

 53 genera and 196 species of Hepatics and 59 genera and 410 

 species of Lichens, with of course many varieties. In the ad- 

 dendum 243 species of Mosses are added to those enumerated in 

 Part VI. 



The greater part of the material examined by Prof. Macoun 

 is included in the Herbarium of the Geological Survey where 

 Canadian cryptogams of the above classes are represented by over 

 i6,ono sheets of specimens, the chief part of which were collected 

 by the author himself. Botanists from all parts of Canada have, 

 however, assisted in making the list complete, and few, if any, 

 printed lists of species have been overlooked. As in Part VI, 

 descriptions of recently described new species have been reprinted, 

 and though called a catalogue the volume really contains an im- 

 mense amount of information regarding habitat and distribution, 

 and the author's unrivalled personal knowledge of Canada has 

 ^ enabled him to so arrange his matter that the geographical and 

 descriptive parts of the Catalogue contain none of the errors so 

 common in publications of this kind. 



