Sori of Scolopendrium vulgare
Hart’s Tongue. Scolopendrium vulgare
Walking Fern. Camptosorus rhizophyllus
Christmas Fern. Polystichum acrostichoides
Varieties of Christmas Fern
Braun’s Holly Fern. Polystichum Braunii
Holly Fern. Polystichum Lonchitis
Marsh Fern. Aspidium Thelypteris
Marsh Fern, in the mass
Massachusetts Fern. Aspidium simulatum
New York Fern. Aspidium noveboracense
Sori of Aspidium noveboracense
Pinnae and Sori of Aspidium noveboracense
Oak Fern. Phegopteris Dryopteris
Northern Oak Fern. Phegopteris Robertiana
Broad Beech Fern. Aspidium hexagonoptera
Long Beech Fern. Aspidium polypedioides
Fragrant Fern. Aspidium fragrans
Marginal Shield Fern. Aspidium marginale
Crown of Fronds of Aspidium marginale
Sori of Aspidium marginale
Male Fern. Aspidium Filix-mas
Aspidium Filix-mas and details
Goldie’s Shield Fern. Aspidium Goldianum
Aspidium Goldianum, in the mass
Crested Shield Fern. Aspidium cristatum
Crested Shield Fern. Aspidium cristatum (No. 2)
Clinton’s Shield Fern. Aspidium cristatum var. Clintonianum
Crested Marginal Fern. Aspidium cristatum x marginale
Aspidium cristatum x marginale, in the mass
Boott’s Shield Fern. Aspidium Boottii
Spinulose Shield Fern. Aspidium spinulosum
Aspidium spinulosum var. intermedium
Aspidium spinulosum var. americanum
Bulblet Bladder Fern. Cystopteris bulbifera
Cystopteris bulbifera with sprouting bulb
Fragile Bladder Fern. Cystopteris fragilis
Rusty Woodsia. Woodsia ilvensis
Northern Woodsia. Woodsia alpina
Details of Alpine Woodsia
Blunt-lobed Woodsia. Woodsia obtusa
Smooth Woodsia. Woodsia glabella
Hayscented Fern. Dennstaedtia punctilobula
Forked variety of Dennstaedtia punctilobula
Field View of Dennstaedtia punctilobula
Pinnae and Sori of Dennstaedtia punctilobula
Meadow View of Sensitive Fern
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. Schizaea pusilla
Sporangia of Curly Grass