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  3. Repeat steps 1 and 2, narrowing down the possibilities.
  4. A 'COMPARE IMAGES' link appears on left when under 100 kinds match. Use this to compare kinds.
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Discover Life 25 kinds match in US, MA, Nantucket:
Athyrium filix-femina  [popup]
Lady fern...
Botrychium dissectum  [popup]
Dissected grapefern...
Dennstaedtia punctilobula  [popup]
eastern hayscented fern
Dryopteris carthusiana  [popup]
spinulose woodfern
Dryopteris cristata  [popup]
Crested woodfern
Equisetum arvense  [popup]
Equisetum variegatum  [popup]
Lycopodiella alopecuroides  [popup]
Lycopodiella inundata  [popup]
Lycopodium digitatum  [popup]
Hanging clubmoss...
Lycopodium obscurum  [popup]
Dendrolycopodium obscurum
Lycopodium tristachyum  [popup]
Deeproot clubmoss...
Onoclea sensibilis  [popup]
Sensitive fern
Ophioglossum pusillum  [popup]
northern adderstongue
Osmunda cinnamomea  [popup]
Cinnamon fern...
Osmunda claytoniana  [popup]
Interrupted fern
Osmunda regalis  [popup]
Royal fern
Phegopteris connectilis  [popup]
long beechfern
Polypodium virginianum  [popup]
Rockcap fern...
Pteridium aquilinum  [popup]
Western Brackenfern...
Thelypteris noveboracensis  [popup]
Parathelypteris noveboracensis
Thelypteris palustris  [popup]
Eastern marsh fern
Thelypteris simulata  [popup]
bog fern
Woodwardia areolata  [popup]
Netted Chainfern...
Woodwardia virginica  [popup]
Pteridophyta


REMAINING (number with state)
Blade division
 Pinnate-pinnatifid (6)
 Bipinnate (4)
 Tripinnate (3)
 Pinnatifid (2)
 Pinnate (1)
Family
 Lycopodiaceae (5)
 Dryopteridaceae (4)
 Thelypteridaceae (4)
 Osmundaceae (3)
 Blechnaceae (2)
 Dennstaedtiaceae (2)
 Equisetaceae (2)
 Ophioglossaceae (2)
 Polypodiaceae (1)
Genus
 Lycopodium (3)
 Osmunda (3)
 Thelypteris (3)
 Dryopteris (2)
 Equisetum (2)
 Lycopodiella (2)
 Woodwardia (2)
 Athyrium (1)
 Botrychium (1)
 Dennstaedtia (1)
 Onoclea (1)
 Ophioglossum (1)
 Phegopteris (1)
 Polypodium (1)
 Pteridium (1)
Habitat, terrestrial
 Moist woods (4)
 Stream banks (4)
 Swamps (3)
 Rocks (1)
Leaf base stipule present
 No (3)
 Yes (3)
Plant conspicuoulsy jointed
 No (23)
 Yes (2)
Rachis color
 Green (2)
 Yellow (1)
Sporangia
 In axils (5)
 On leaf blades (5)
 Fertile stalk (2)
 Fertile spikes (1)
Stipe is hairy
 No (3)
 Yes (1)