Obtusilobata Forms of Sensitive Fern, Leaf to Fruit
Sori of Sensitive Fern
Sensitive Fern. _Onoclea sensibilis_
Sensitive Fern, Fertile and Sterile Fronds on Same Plant
Ostrich Fern. _Onoclea Struthiopteris_. Fertile Fronds
Ostrich Fern. Sterile Fronds
Sori and Sporangia of Ostrich Fern
Royal Fern. _Osmunda regalis spectabilis_
Sori of Royal Fern
Interrupted Fern. _Osmunda Claytoniana_
Interrupted Fern. Fertile Pinnules Spread Open
Cinnamon Fern. _Osmunda cinnamomea_
Cinnamon Fern. Leaf Gradations
Two Varieties of Cinnamon Fern
_Osmunda cinnamomea glandulosa_
Curly Grass. _Schizæa pusilla_
Sporangia of Curly Grass
Climbing Fern. _Lygodium palmatum_
Adder's Tongue. _Ophioglossum vulgatum_
Moonwort. _Botrychium Lunaria_
Moonwort, Details
Little Grape Fern. _Botrychium simplex_
Lance-leaved Grape Fern. _Botrychium lanceolatum_
Matricary Grape Fern. _Botrychium ramosum_
Common Grape Fern. _Botrychium obliquum_
_Botrychium obliquum_ var. _dissectum_
_Botrychium obliquum_ var. _oneidense_
Ternate Grape Fern. _Botrychium ternatum_ var. _intermedium_
Ternate Grape Fern. _B. ternatum_ var. _intermedium_
Rattlesnake Fern. _Botrychium virginianum_