I found these yesterday, growing on the inner surface of partly detached bark of a dead and standing, thin Betula sp. These were growing mixed with what I think is Calycina languida.

The outer hairs are tapering and bent at the tips. No iodine reactions with Lugol's solution. Asci 8-spored, with croziers. The cylindrical paraphyses were a bit difficult to see in a water mount, but they didn't seem to have VBs. The spores measure 5.2-6.9 x 2.3-2.9 micrometres. 

This collection seems interesting to me and I'd naturally like to find out the genus and the species...