How to recognize Philonotis fontana: This is a small acrocarp which has reddish stems and dense rhizoids on the stem below. The ovate-lanceolate leaves are 1-2 mm long with long acuminate tips, and are erect when dry and spread a little when wet. The costa extends to the leaf tip and a little beyond. The roundish capsule is 2-4 mm long, and furrowed when dry. The distinguishing feature of this moss is the prorulose cells on the back of leaf, away from the stem. A compound microscope is need to see this feature. The bottom end of the cells protrudes above the leaf surface on the median and basal cells of the leaf.
Where to find Philonotis fontana: Look for this moss in wet places, especially seepage areas, on rocks and soil.