18 



is a glossary to all these terms at the back which will make 

 it possible for anyone with patience to follow the keys through. 

 It is to be regretted that in the keys to families — which occupy 

 31 pages-there are no page references, merely the family name 

 and its number. 



The scientific names used follow the standard American 

 Code of priority and are generally those used in the 2nd edition 

 of Britton and Brown's Illustrated Flora. Where the names 

 used dift'er from those of the Flora sj^nonyms are given. Names 

 from the 7th edition of Gray's Manual are also given as syn- 

 onyms. One "common name" is given for each species. Many 

 or these are names already in common use, but some are merely 

 literal translations of the scientific name. 



No notes are given as to distribution or habitat, students 

 being refered to the author's Catalogue of Ohio Vascular 

 Plants, published in 1914. The addition of such notes would 

 have slightly increased the size of the volume but greatly 

 increased its value. 



At the back of the book are keys to the woody plants 

 of Ohio based on leaf and twig characters for summer use 

 and on twig characters for winter use. These are quite similar 

 to those in the authors Field Manual of Trees, with the addition 

 of shrubby plants and the omission of trees not found in 

 Ohio. 



The book is well printed and attractively bound in black 

 fabricoid. It is of a size to fit a coat pocket (but not a small 

 one.) It will be of real help to botanists of Ohio and neighbor- 

 ing states and, once the terms are mastered, will be useful 

 to those to whom it is dedicated, — the "lovers of the beauties 

 of nature and of God's great, health-giving out-of-doors." 



George T. Hastings 



Moss Flora of North America^ 



This is the beginning of a new treatment of the Musci 

 of the United States and northward. As in the author's earlier 

 "Mosses with Hand-lens and Microscope," the illustrations 



1 A. J. Grout. Moss Flora of North America, North of Mexico. Vol. 

 Ill, Part 1. 62 pages, with 14 plates. Published by the Author, New York, 

 1928. $2.50 



