Churchiae, 14: 39. 



Columbianum, 14: 37. 



cristatum, 11: 102. 13: 75. 



deltoideum, 14: 37. 



hastatum, 14: 37. 



marginale, 14: 35. 



multifidum, 14: 38. 



perpusillum, 18: $98. 



platylobum, 14: 36. 



ramosum, 14: 38. 



rotundatum, 14: 36. 17: 77. 



semilacerum, 14: 38. 



sinuatum, 14: 38. 

 Polystichum 



acrostichoides, 11: 4, 36, 69, 102. 

 12: 37, 48, 70, 75. 13: 13, 36, 

 56. 14: 4, 70, 100. 15: *$71, 

 122. 17: 77. 19: 112. 20: 

 39, 53, 75. 



angulare, 16: 14. 



crispa, 15: fl22. 



cristatum, 20: 81. 



f. Gravesii, 20: *$50. 



incisum, 12: 75. 15: *$101, 122. 



lanceolatum, 20: *$24. 



Lemmoni, 12: 82. 



multinda, 15: $71, fl22. 17: 

 *99. 



recurvatum, 12^: 79. 14: 41. 

 15: fl22. 



aculeatum, 12: 11. 15: 123. 16: 

 43. 17: 4. 19: 5. 20: 28. 

 angulare, 12: 11. 

 braunii, 15: 123. 

 Californicum, 11: 83. 12: 11. 

 lobatum, 11: 83. 12: 11. 

 scopulinum, 11: 83. 15: 123. 

 Braunii, 11: 102. 13: 37. 14: 100, 



16: 103. 17: 77. 20: 11. 

 Lemmoni, 12: 11, 109. 15: 123. 

 lonchitis, 11: 83. 12: 10. 14: 



70. 15: 123. 20: 11. 

 mohrioides, 11: 83. 

 munitum, 11: 83. 12: 10. 15: 

 123. 



fbbellare, 15: 123. 

 imbricans, 11: 83. 15: 124. 

 inciso-serratum, 11: 83. 12: 



109. 15: 124. 

 solitarinm, 11: 39. 

 Plaschnickianum, 13: *t78. 

 scopulinum, 12: 11. 

 Psilotum 



nudum, 11 : 15. 



triquetrum, 12: 38, 47. 16: 23. 

 Pteridium 



aquilinum, 15: 41. 

 Pteris 



aquilina, 11: 4, 21, 67, 102. 12: 

 70, 77, 89, 109. 13: 24, 38, 57. 

 14: 3, 67, 101. 15: 5, 26, 124. 

 17: 5, 15, 77. 19: 5, 55, 109. 

 20: 9, 37, 53. 

 crispa, 15: 124. 



lanuginosa, 11: 82. 12: 6, 99, 

 109. 



pseudo-caudata, 11: 4, 21, 22, 

 37, 102. 12: 36, 77. 13: 9, 

 38,57. 15: *$43, *44, 124. 17: 

 77. 



pubescens, 15: 124. 

 caudata, 12: 36, 47. 15: 124. 

 cretica, 12: 36. 13: 9. 15: 125. 

 esculenta, 20: 27. 

 longifolia, 11: 4, 21, 22. 12: 36, 

 47. 14: 110. 15: 125. 19: 

 68. 20: 83. 

 serrulata, 11: 4, 14, 104. 13: 9, 

 59. 15: 87, 125. 

 Rhipidopteris 



peltatum, 17: *fl6. 

 Salvinia 



natans, 16: 16. 

 Sagenia 



apiifolia, 11: 54. 

 cicutaria, 11: 54. 

 macrophylla, 11: 54. 

 Schizaea 



pusilla, 13: 97, 120. 17: 112. 19: 

 77, 88. 2b: 54. 

 Scolpendrium 

 Lindeni, 11: 86. 



vulgare, 11: 102, 107. 13: 30, 104, 



14: 69, 82. 15: 125. 17: 57. 



19: 70. 

 Selaginella 



acanthonota, 13: 15. 



apus, 11: 5, 37, 104. 12: 48, 70. 



13: 15, 40. 14: 8. 74, 103. 



16: 51. 17: 78. 19: 114. 20: 



19, 26, 42. 

 arenicola, 11: 37. 12: 38, 47. 13: 



15. 16: 51. 

 Bigelovii, 12: 13. 14: 111. 16: 



51. 



"Robnderi, 12: 13. 

 Caribensis, 13: 74. 

 cinerascens, 72: 13. 16: 51. 



