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, w. NC, e. TN, OH, MO, and AR (Peck 2011).

Origin/Endemic status: Native

Taxonomy Comments: We need to more carefully study the plants ascribed to A. angustum in the Roan Mountain massif; they may represent an undescribed (or currently unrecognized) entity.

Other Comments: The occurrence of this northern species is not fully documented in NC or VA; it was found in the 1980s by Murray Evans on Hump Mountain, on or near the TN-NC border.

Synonymy: = 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

Show in key(s)

Show parent genus

Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FAC
• Eastern Mountains and Piedmont: FAC
• Great Plains: FAC
• Midwest: FAC
• Northcentral & Northeast: FAC

Heliophily ?: 4