Bartramiopsis Kindberg, 1894.

Bartramiopsis is known from only a single site in northwestern Washington State. It is easily recognized even in the field as a moderately large moss with photosynthetic lamellae and with long cilia on the shoulders of each leaf.
see key to Atrichum Etc.

Species included:
Bartramiopsis lescurii (T. P. James) Kindberg, not known from CA