Dataset: All Collections
Taxa: Athyrium filix-femina var. angustum (Athyrium filix-femina ssp. angustum, Athyrium angustum, Athyrium filix-femina var. michauxii, Athyrium filix-femina var. rubellum, Athyrium angustum var. rubellum, Athyrium angustum var. subtripinnatum, Athyrium angustum var. angustum)
Search Criteria: excluding cultivated/captive occurrences