Bryoxiphium Mitten, 1869.

Bryoxiphium is a very discontinuously distributed moss. In western North America, it is rarely encountered on siliceous rocks in northwestern Washington and in Arizona and New Mexico, as well as in scattered areas in the Cordillera Oriental of Mexico. The leaves show a steady increase in length toward the apex of the unbranched stem, and their distichous arrangement gives an almost sword-like appearance, thus the common name sword-moss.
see key to Fissidens Etc.

Species included:
Bryoxiphium norvegicum (Bridel) Mitten, not known from CA