Dryopteris intermedia (Muhl. ex Willd.) A. Gray
Evergreen wood fern
Kingdom Plantae Plants, but not fungi, lichens, or algae
Subkingdom Tracheobionta Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division Pteridophyta Ferns
Class Filicopsida “Leptosporangiate” (has to do with how their spores form) ferns—includes most ferns
Order Polypodiales Polypod ferns
Family Dryopteridaceae Wood ferns (about 70% of the ferns)
Genus Dryopteris From Greek dryas, “oak,” and pteris, “fern,” in reference to the presence of some species of wood ferns in woodland areas populated with oaks
Species intermedia Intermediate, indicating an observation that a species was probably considered as being halfway or partway between two others with regard to some particular characteristic, e.g. tall, short, and “intermediate”
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6/5/2015 · Big Bear Mountain, Brookline, New Hampshire ≈ 23 × 20" (57 × 51 cm)
9/14/2010 · Garden in the Woods, Framingham, Massachusetts ≈ 17 × 12" (44 × 29 cm)
10/7/2012 · Beaver Brook Assn Conservation Lands, Hollis, New Hampshire ≈ 5 × 3½" (13 × 9.2 cm)
6/18/2015 · Beaver Brook Conservation Area, Hollis, New Hampshire ≈ 6 × 9" (15 × 22 cm)
5/22/2010 · Garden in the Woods, Framingham, Massachusetts ≈ 17 × 12" (44 × 29 cm)
10/7/2012 · Beaver Brook Assn Conservation Lands, Hollis, New Hampshire ≈ 9 × 6" (23 × 15 cm)
Older scientific names
Dryopteris austriaca (Jacq.) Woynar ex Schinz & Thell. var. intermedia (Muhl. ex Willd.) Morton
Dryopteris spinulosa (O.F. Müll.) Watt var. concordiana (Davenport) Eastman
Dryopteris spinulosa (O.F. Müll.) Watt var. intermedia (Muhl. ex Willd.) Underw.
Dryopteris intermedia description by Thomas H. Kent, last updated 14 Aug 2021.
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6/18/2015 · Beaver Brook Conservation Area, Hollis, New Hampshire ≈ 12 × 8" (31 × 21 cm)
10/7/2012 · Beaver Brook Assn Conservation Lands, Hollis, New Hampshire ≈ 7 × 6" (18 × 15 cm)
9/24/2013 · Squannacook River Wildlife Area, Townsend, Massachusetts ≈ 12 × 8" (31 × 21 cm)
9/14/2010 · Garden in the Woods, Framingham, Massachusetts ≈ 15 × 10" (39 × 26 cm)
7/13/2015 · Mt. Ascutney State Park, Ascutney, Vermont ≈ 11 × 7" (28 × 18 cm) ID is uncertain
7/13/2015 · Mt. Ascutney State Park, Ascutney, Vermont ≈ 7 × 10" (16 × 25 cm) ID is uncertain
10/16/2013 · Willard Brook State Park, Blue Trail, Ashby, Massachusetts ≈ 7 × 6" (18 × 15 cm)
Range:
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