xxii Illustrations 



PLATE FACING PAGE 



60 Azaleastrum albiflorum (Hook.) Rydb. 



White Mountain Rhododendron . 218 



6 1 Menziesia ferruginea Smith. Smooth 



Menziesea . . . . .220 



6 1 Kalmia microphylla (Hook.) Heller. 



Dwarf Swamp-Laurel . . .220 



62 Vaccinium erythrococcum Rydb. 



Alpine Bilberry . . . .222 



62 Vaccinium globulare Rydb. Thin- 

 Leaved Bilberry - . ^ : 2 2 2 



62 Vaccinium ovalifolium Smith. Blue- 



berry . - ,. ' '. ^ . r^5 222 



63 Primula Maccalliana Wiegand. Mac- 



calla's Primrose . . \.". 228 



63 Androsace carinata Torr. Sweet 



Androsace . . . 228 



64 Trientalis arctica Fisch. Arctic Star- 



Flower \_ ... . 230 



64 Dodecatheon conjugens Greene. Shoot- 



ing-Star . ;. .., ,. : . -230 



65 Gentiana affinis Griseb. Large Gen- 



tian .... 234 



65 Romanzoffia sitchensis Bong. Ro- 



manzoffia . *" J 1' . . 234 



66 Phacelia sericea (Graham) A. Gray. 



Mountain Phacelia . . .238 



