Thanks to David Toren for the identification. Note that a plant of Syntrichia sp?. can be seen at the right hand edge above the middle. Bryum argenteum, Aloina sp. and two other acrocarps were within inches, and Tortula atrovirens was close by.
This moss formed mats on the trunk of an oak tree near Mariah Meadows Resort (in hills Near Cobb) and is here seen photographed later from a collected piece. The small green specks seen on the upper leaf surfaces are gemmae that enable vegetative propagation.