ATHYRIACEAE

Athyrium angustum (Willdenow) C. Presl. Section: Athyrium. Northern Lady Fern. Phen: Jun-Sep. Hab: Moist forests, rock outcrops on grassy balds at high elevations. Dist: NL (Newfoundland) and n. QC west to SK, south to VA (Kartesz 1999), w. NC, e. TN, OH, MO, AR (Peck 2011), and NE.

Origin/Endemic status: Native

Syn: = K3, K4, NE, NY, Sf, Tat, WV; = Athyrium filix-femina (L.) Roth ex Mert. ssp. angustum (Willd.) Clausen – Il, K1, Mo1, Tn, W; = Athyrium filix-femina (L.) Roth ex Mert. var. angustum (Willd.) G.Lawson – FNA2, GrPl, Pa; = Athyrium filix-femina (L.) Roth ex Mert. var. michauxii (Spreng.) Farw. – C, F, G; = n/a – RAB; < Athyrium filix-foemina (L.) Roth – S13

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