About Ptilidium ciliare (L.) Hampe
Ptilidium ciliare grows in loose, reddish-brown to yellow-green tufts, with individual shoots reaching up to 3 mm wide. Its stems are pinnate or bipinnate, and short stubby branching clusters of dense overlapping leaves cover the stems. Individual leaves grow up to 2.8 mm wide and 2.3 mm long. Leaf surfaces are finely serrated or ciliated, with margins extended into fringe-like rows of thin teeth. These teeth hide the bilobed structure of the leaves, making the division hard to see. Sexual reproductive structures are very rarely observed on this species. Ptilidium ciliare is commonly found in lowland to upland habitats, including acidic grassland, rocky slopes, cliff ledges, screes, wall tops, dwarf shrub heaths, bogs, sand dunes, and heathy woodlands. It usually grows mixed in with a variety of other bryophyte species. It prefers to grow on well-drained, acidic substrates. It rarely grows on fallen logs and branches.
