How to recognize Homomalium adnatum: This tiny little mat forming moss has leaves only 0.5 to 0.8 mm long. The leaves are oblong-ovate and shortly acuminate and held somewhat erect on the branches and stem. The leaf margins are smooth or slight serrulate at the tip. The triangular group of quadrate alar cells extends about 1/3 of the way up the leaf. The capsules are 1-1.5 mm long at the tip of a orange to yellow seta.
Where to find Homomalium adnatum: This moss grows on shaded boulders either acidic or basic especially near streams.