Illustrations xix 



PLATE FACING PAGE 



40 Tiarella unifoliata Hook. Western 



Foam-Flower .. . ^v l~*>w i.. ' 150 



40 Lutkea pectinata (Pursh) Kuntze. 



Cut-Leaved Lutkea . . ;v ' u . j.' 150 



41 Rubus pedatus Smith. Creeping 



Raspberry . I'W-* P r ? -1 . 7 '; 152 



42 Rubus parviflorus. Nutt. Salmon- 



Berry . . V * ' . 156 



43 Fragaria glauca (S. Wats.) Rydb. 



Wild Strawberry . J':-H ,-;-. J58 



43 Amelanchier flinda Lindl. Service 



Berry v ; "> . ;. ,. ; . 158 



44 Dry as octopetala L. White Mountain 



Avens. - J t' u * -i - >r '' '.-. : '' ;; 'i" : : ; i 164 



44 Dryas Drummondii Rich. Drum- 



mond's Mountain Avens &\&$\ . 164 



45 Geum strictum Ait. Yellow Avens . 162 



45 Sieversia ciliata (Pursh) Don. Long- 



Plumed Purple Avens . . ^162 



46 Phaca americana (Hook.) Rydb. Arc- 



tic Vetch . ' . .. . .172 



46 Homalobus aboriginorum (Rich) 



Rydb. Indian Vetch . "' 1 ~. w ., 172 



47 Aragallus deflexus. (Pall.) Heller. 



Drooping Vetch . . i - ' ;.' - . 176 



17 Aragallus viscidulus Rydb. Sticky 

 Oxytrope . . , ;f .rf [Mx'-i i ^ I 



