INDEX TO THE SCIENTIFIC NAMES. 331 



Sibiricus, 268. 

 CHEILANTHES, 237, 242. 

 Alabamensis, 242. 

 Feei t 241. 

 gracilis, 241. 

 lanosa, 239. 

 lanuginosa, 240. 

 tomentosa, 239. 

 vestita, 237. 

 CRYPTOGRAMMA, 286. 

 acrostichoides 283 . 

 Stelleri, 87. 

 CYSTOPTERIS, 209. 

 bulbifera, 212. 

 fragilis, 209. 

 f. angustata, 212. 

 f. den tat a, 212. 

 f. laciniata, 212. 

 montana, 214, 

 Dennstadtia, 231. 

 DICKSONIA , 231. 

 pilosiuscula, 229. 

 Dryopteris, 105, 117, 127, 133. 

 Filix, 209. 

 Lastrea, 133, 149. 

 LYGODIUM, 280. 

 palmatum, 280. 

 Matteuccia Struthiopteris, 259. 



/. Pennsylvania, 259. 

 Nephrodium, 127, 149. 

 NOTHOL>ENA, 287. 

 dealbata, 286. 

 nivea, 286. 

 ONOCLEA, 253. 

 sensibilis, 253. 



f. obtusilobata, 256. 

 Struthiopteris, 259. 

 OPHIOGLOSSUM, 48. 

 arenarium, 47. 

 vulgatum, 45. 

 f. arenarium, 47. 

 f. Engelmanni, 48. 

 OSMUNDA, 25, 35. 



cinnamomea, 25. 

 f. frondosa, 29. 



Claytoniana, 30. 



interrupta, 32. 



regalis, 32. 



spectabilis, 35. 

 PELLJEA, 83, 88. 



atropurpurea, 84. 



densa, 87. 



gracilis, 85. 

 PHEGOPTERIS, 195, 204. 



calcarea, 204. 



Dryopteris, 203. 



Dryopteris Robertiana, 204. 



hexagonoptera, 202. 



phfgopteris, 201. 



polypodioides, 200. 



Phyllitis Scolopendrium, 271. 



POLYPODIUM, 195, 204. 



deceptum, 198. 

 incanum, 198. 

 polypodioides, 199. 

 vulgare, 196. 



f. angustum, 197. 



f. biserratum, 198. 



f. Cambricum, 197. 



f. cristatum, 198. 



f. rotundatum, 197. 



POLYSTICHUM, 105, III. 



acrostichoides, 106. 



f. crispum, 107. 



f. incisum, 107. 

 aculcatum, no. 

 aculeatiim Calif or nicum, III. 

 aculealum angulare, in. 

 Braunii, no. 

 lonchitis, 108. 

 muni turn, 108. 

 Pteridium, 77. 

 PTERIS, 77 

 Aquilina, 69. 



aquilina pseudocaudata, 77. 

 aquilina lanuginosa, 77. 



