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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."