Bryologist90: 18, figs. 9–23, 25–28. 1987,
Habitat: Acidic rock
Elevation: low to moderate elevations
Andreaea megistospora is distinguished from the similar A. rothii by its large spores, and may simply prove to be a large form of the latter. The variety epapillosa is a minor variant commonly occurring in mixture with the typical variety, and doubtfully warrants a name.