Aulacomnium androgynum can be found in a variety of open and shaded habitats.
The apex of each leaf is pointed and often bears sharp teeth.
In this species, specialized asexual reproduction occurs via gemmae.
The “lollipop” shape of the gemmae-bearing structures of Aulacomnium androgynum are distinctive: the gemmae are clustered in balls elevated on pseudopodia that emerge singly from the shoot apices. The epithet androgynum apparently refers to past confusion of the gemmiferous shoots for male shoots ().
Individual gemmae are clavicle-shaped and short-stalked.