Habitat
Aulacomnium androgynum can be found in a variety of open and shaded habitats.
Substrata include decaying wood, tree trunks, disturbed mineral soil and rocks.
Gametophyte
Overall Structure:
Aulacomnium androgynum is an acrocarp that forms short, bright yellow-green tufts or turfs.
Leaf Structure:
Leaves are costate and the marginal cells are not differentiated from the other laminal cells. The cells are also distinctly papillose.
The apex of each leaf is pointed and often bears sharp teeth.
Asexual Reproduction
Gemmae:
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.
Sporophyte
Sporophytes are common and mature in spring ().
The sporangia are brown and grooved at maturity.