xvi Illustrations 



p LATE FACING PAGE 



19 Alsine borealis (Bigel.) Britton. 



Northern Stitchwort . . .86 



19 Moehringia lateriflora (L.) Blunt- 

 Leaved Sandwort . . . .86 



19 Arenaria capillaris nardifolia (Ledeb.) 



Regel. Rock Sandwort . .86 



20 Caltha leptosepala Hook. . ;, o 104 



20 Trollius albiflorus (A. Gray) Rydb. 



Western Globe-Flower . .;' s.i- 104 



21 Aquilegia brevistyla Hook. Small 



Blue Columbine . ; '., .' 102 



22 Aquilegia flavescens S. Wats. Yellow 



Columbine .... - , ? 106 



22 Aquilegia- formosa Fisch. Western Col- 



umbine :.. , .; . ; . . <:;, .> 106 



23 Delphinium Brownii Rydb. Mountain 



Larkspur . ,<: . .> , ; . 108 



23 Anemone globosa Nutt. Wind-Flower 108 



24 Anemone Drummondii S. Wats. Al- 



pine Anemone if\ . '; V ' %?. 92 



24 Anemone parviflora Michx. Northern 



Anemone . . . . \. 92 



25 Pulsatilla hirsutissima (Pursh) Britton 



Pasque-Flower . . . \. 94 



25 Pulsatilla ^ occidentalis (S. Wats.) 



Freyn. Western Anemone . _.' 94 



