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Blunt-lobed Grape Fern
Botrychium oneidense (Sceptridium oneidense)

Blunt-lobed grape fern can easily be confused with the variety of cut-leaved grape fern that has smooth leaf edges. Blunt-lobed grape fern tends to have round tips to its fronds, and it stays pure green in winter, while cut-leaved grape fern turns bronze-green. In Connecticut, blunt-lobed grape fern is much rarer than cut-leaved grape fern.

• Family: Ophioglossaceae
• Habitat: rich, wet woods in acidic soil
• Height: 6-15 inches
• Location of spores: separate fertile section of frond, which branches from the sterile portion near the ground
• Stipe (leaf stalk): light green, smooth
• Growth pattern: single leaf
• Persistence: evergreen

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Botrychium oneidense
Photo © Don Lubin, courtesy of Ferns et al. of New England.


Last updated November 25, 2005. © 2005 Connecticut Botanical Society. All rights reserved.