xiv Illustrations 



PLATE FACING PAGE 



6 Zygadenus gramineus Rydb. Zyga- 



denus , . . . . ." . 38 



7 Stenanthella occidentalis (A. Gray). 



Rydb. Stenanthium . . . 40 



7 Clintonia uniflora Kunth. Clintonia 40 



8 Tofieldia intermedia Rydb. False As- 



phodel ' ; " ' r \ ; V : ' V i; - : ' .'' 42 



8 Vagnera stellata (L) Morong. Star- 



Flowered Solomon s Seal ' .' . 42 



9 Erythronium grandiflorum. Pursh. 



Snow Lily . ". '. "-. -. 44 



lo Lilium montanum A. Nels. Red Moun- 

 tain-Lily . .- v . . '. 46 



10 Kruhsea streptopoides (Ledeb) Kear- 



ney. Kruhsea . . . .46 



11 Cypripedium passerinum Rich. Small 



White Lady's Slipper . '. , : . 54 



11 Cypripedium parvinorum Salisb. 



Small Yellow Lady's Slipper . ' '. 54 



12 Corallorhiza Corallorhiza (L). Karst. 



Coral-Root . * . . . . 56 



12 Lyschiton kamtschatcense (L.) 



Schott. Western Skunk-Cabbage . 56 



13 Cytherea bulbosa (L.) House. Calyp- 



so ,. . ~ . . . . . 58 



