g— TN CONTENTS /7 — D 



CONTRIBUTED ARTICLES. 



Aggressiveness of Plants, The Willard N. Clute, 39 



Eccentricities of Distribution Dr. W. W. Bailey, 100 



Flowering Raspberry, The Dr. W. W. Bailey 37 



History and Future of Forestry in the United States . . 



Mary F. Haggerty, 70, 103 



Key to the Apetalous Dicotyledons 120 



Key to the Monocotyledons 26 



Key to the Polypetalous Dicotyledons 88 



Key to the Sympetalous Dicotyledons 54 



Parnassia Dr. W. W. Bailey, 69 



Plant Hairs and Scales Mary McGowan, 4 



Plants of the Sand-barrens, The. . . .Willard N. Clute, 33 



Some Rare Vermont Plants Lester A. Wheeler, 65 



Some Spring Wildflowers of Alberta . .W. M. Buswell, 1 



Some Trees of the California Deserts . . C. F. Saunders, 97 



Teaching Systematic Botany Willard N. Clute, 50 



Three Examples of Retarded Development Among 



Leaves Edivin W. Humphreys, 6 



Local Names of Flowers Mrs. Flora Swetnam, 8 



REPRINTED ARTICLES. 



Centenary of a Botanist 41 



Studying Buds 21 



School Botany , 21, 50, 85, 117 



Editorial 28, 56, 92, 122 



Books and Writers. 31, 57, 93, 124 



