Conostomum Swartz in Weber & D. Mohr, 1804.

Conostomum is easily recognized by the strongly 5-ranked leaves on a small glaucous plant with dense red-brown rhizoids on older stems. The leaves tend to be so strongly keeled as to emphasize the pattern of leaf ranking. Conostomum is found on moist areas at high elevations, especially below perennial snow banks. In California, it usually grows as scattered plants among other mosses, and is recognized by its glaucous cast and strongly keeled leaves.
see key to Philonotis Etc.

Species included:
Conostomum tetragonum (Hedwig) Lindberg