INDEX TO THE COMMON NAMES. 



275 



Mountain rush, 24. 

 Mud horsetail, 53, 62. 



NAKKD horsetail, 23. 

 OREGON selaginella, 148. 



PADDOCK-pipes, 24, 49, 62. 

 Pepperwort, i8S. 

 Pillwort, 206. 

 Pine-grass, 49. 

 Pine-top, 49. 

 Pipes, 24. 

 Polishing-rush, 23. 

 Prickly mountain moss, 150. 

 Princess pine, 93. 



RESURRECTION moss, 161. 

 Resurrection plant, 163. 

 River-bank quillwort, 239. 

 Rock selaginella, 139. 

 Running moss, 85. 

 Running pine, 84, 93. 



SALVINIA, 175. 

 Savin-leaved club-moss, 95. 

 Scouring-rush, 23. 

 Scrub-grass, 23. 

 Shade horsetail, 53. 

 Shave -grass, 23. 

 Shining club-moss, 107. 



Shore horsetail, 65. 

 Sigillarias, 6. 

 Smoke-rush, 49. 

 Smoke-weed, 24. 

 Smooth scouring-rush, 30. 

 Snake-grass, 49. 

 Snake-moss, 85. 

 Snake-rush, 24. 

 Snake-weed, 24. 

 Stag-horn, 84. 

 Stag-horn club-moss, 101 

 Stiff club-moss, 86. 

 Swamp evergreen, no. 



TAD-PIPES, 49. 



Toad-pipes, 49. 



Toad-tail, 85. 



Trailing Christmas-green, 84, 93. 



Tree club-moss, 99. 



Tuckerman's quillwort, 225. 



VARIEGATED scouring-rush, 36. 

 Virgin Mary's furze, 114. 



WATER fern, 170, 181. 

 Water horsetail, 58. 

 Water-pepper, 206. 

 Winter-rush, 24. 

 Wolf's-claw, 85. 

 Wood horsetail, 53. 



