⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35157078, with some changes.

Catharinea undulata var. allegheniensis Jenn. is a synonym of Atrichum angustatum (Brid.) Bruch & Schimp.

This name is a synonym of Atrichum angustatum (Brid.) Bruch & Schimp..

The record derives from Tropicos which reports it as a synonym (record 35157078) with original publication details: Man. Mosses W. Pennsylvania 188 188 1913.