INDEX. 
New genera and species in bold-face type; synonyms in italics. 
Abronia 
angustifolia, 344 
micrantha, 343 
Acer circinatum, 75 
Acta arguta, 84 
grandiflora, 271 
la 
Agoseris dasycarpa, 26 
Alisma validum, 115 
Allocarya 
leptoclada, 109 
nitens, 108 
tenera, 109 
procu 
spadiceus, 205 
Amelanchier alnifolia, 81 
Andromeda Polifolia, 81 
calophylla, 347 
campestris, 275 
Canadensis, 275 
arpathica, 176 
decipiens, 278, 321 
