Its capsules are oval-shaped, and bend back into the leaves when the plant is dry, and stand out when it is moist.

[5] Grimmia pulvinata colonizes a variety of surfaces including rocks, concrete, and tree trunks.

It is tolerant of a wide range of pH levels on surfaces, allowing it to live on many types of rock.

[7] Grimmia pulvinata is a pioneer species, meaning it is among the first organisms to colonize habitat which has been disturbed by an event such as a forest fire.

[6] Its resistance to pollution allows it to colonize urban areas such as roofs, walls, and tarmac.