Molendoa Lindberg, 1878.
Molendoa is a rare moss in California perhaps best distinguished from Gymnostomum by the tendency to have tristichous leaves with papillae more centrally located over the cell lumina thus giving the cells a more pellucid look.
see key to Gymnostomum Etc.
Species included:
Molendoa sendtneriana (Bruch & W. P. Schimper) Limpricht