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leathery grapefern

Scientific Name: Botrychium robustum

Family: Ophioglossaceae

Category: Fern

Growth: Forb/herb

Duration: Perennial

Other Names:

       

Leathery Grapefern

The Leathery Grapefern, a member of the genus Botrychium, is the largest grapefern found in New England.

Scientific Name and Common Names

  • Scientific Name: Botrychium multifidum (S.G. Gmel.) Trevis
  • Common Names: Leathery Grapefern, Leather-leaved Grape-fern, Broadleaf Grapefern, Leather Grapefern

Taxonomy and Nomenclature

  • Family: Ophioglossaceae (Adder's-tongue family)
  • Kingdom: Plantae
  • Division: Pteridophyta
  • Synonyms: Sceptridium multifidum (S.G. Gmelin) M. Nishida, Botrychium multifidum (S. G. Gmelin) Ruprecht

Morphological Characteristics

  • Plants are typically 10-45 cm in height.
  • The trophophore (sterile frond) is shiny green, leathery, and evergreen.
  • Trophophores range from 4-40 cm long, and are wider than long.
  • They have up to 10 pairs of overlapping pinnae that are 1 to 2 times pinnate.

Distribution and Habitat

  • The Leathery Grapefern is found east of the Cascade Mountains in Oregon.
  • It is also reported from Minnesota and Lake County.
  • It is known from multiple locations in USDA Forest Service (USFS) Region.

Quirky Facts

  • The name Botrychium comes from the Greek word "botrus" (or "botrys"), meaning "grape." The species name multifidum is derived from the Latin "multifidus," meaning "multiply divided."