Connecticut Plants
Blunt-lobed Grape Fern
Botrychium oneidense (Gilbert) House

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.

  • Synonyms: Sceptridium oneidense
  • Family: adder's-tongue (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
  • Petiole (leaf stalk): light green, smooth
  • Growth pattern: single leaf
  • Persistence: evergreen
  • Origin: native
Botrychium oneidense (Gilbert) House

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