Marsh Fern family–Thelypteridaceae
Phegopteris connectilis (Michx.) Watt
Names: Narrow Beech Fern is also known asLong or Northern Beech Fern.Scientificsynonyms include: Thelyopteris phegopteris Dryopteris phegopteris, Phegopteris polypodioides, Polypodium connectile, and Polypodium phegopteris. Phegos means Oak in Greek, the corresponding term in Latin, Fagus, is applied to the Beech tree. Connectilis refers to how the base pair of pinnae are fused to the rachis.
Relationships: Phegopteris includes 5 species native to North America and Eurasia. Two are found in the United States.
Habitat: This species grows in moist to wet forests, streambanks, and shady, seepy cliff crevices.
Diagnostic Characters: Narrow Beech Fern resembles Oak Fern, but is larger, to 40 cm, and a darker green, with long, triangular fronds. The main pinnae are at right angles to the rachis, but the lowest pair of pinnae usually angle or droop downward.
In the Landscape: Hitchcock thought this was perhaps the best ornamental species of our Marsh Ferns.
Consortium of Pacific Northwest Herbaria
WTU Herbarium Image Collection, Plants of Washington, Burke Museum
E-Flora BC, Electronic Atlas of the Flora of British Columbia