“bristle star moss”
How to recognize Campylium chrysophyllum: This is a yellowish-green patchy mat forming moss. Looking at this plant with a hand-lens the tips of the leaves that project away from the stem and branches are very obvious; this is a clue that the moss might be a Campylium. The wide-spreading leaves are long pointed with an ovate base and a single costa that only reaches half way up or more on the 2-3 mm leaf. The leaf tip is usually channeled with the sides curled in slightly. Under the microscope the small opaque squarish to short-oblong alar cells can be seen at the edge of the base of the leaf in 4-6 rows at the edge if the leaf. These cells and the 1/2-2/3 of leaf length single costa helps to distinguish it from Campylium stellatum, which usually has a short double costa or sometimes a 1/4 leaf length costa.
Where to find Campylium chrysophyllum: This moss forms patches on soil or rocks and sometimes on tree bases and logs, in wet or dry calcium enriched environments. It does not persist in shaded places.