INDEX 



The accepted botanical names are in bold-face type. Synonyms are placed 

 in italics. Where the subject receives the most extended notice the page num- 

 ber is in bold-face type. 



Page 



Abies balsamea 290 



Aceracea 239 



Acer 239 



Negundo 240, 241, 298, 300 



Nugundo variety violaceum 242 



nigrum 246, 247, 299 



pennsylvanicum 295 



rubrum 244, 245, 298, 300 



rubrum variety Drummondii 244 



rubrum variety tridens 246 



saccharinum 242, 243, 300 



saccharum 248, 249, 298 299 



saccharum variety glaucum 248 



saccharum variety Schneckii 250 



saccharum variety Rugelii 250 



Acknowledgments 16 



Adelia 282 



acuminata 282, 283, 300 



^Esculacea? 251 



^sculus 251 



flava variety purpurascens 253 



glabra 251, 252, 300 



octandra 253, 254, 300 



Ailanthus altissima 237, 238 



glandulosa 237 



Alder 90, 300 



smooth 92, 93 



speckled 90, 91 



Alnus 90, 297 



incana 13, 90, 91, 297, 300 



rugosa 13, 90, 92, 93, 300 



Altin iacic 166 



Amelanchier canadensis 177, 178 



laevis 177, 179, 298 299 



Amygdalaceae 216 



Anonaceae 161 



Apple, American crab 172, 173, 299 



Iowa crab 174 



narrow-leaved crab 174, 175 



western crab 174, 176 



thorn . . 180 



