Potriphila navicularis

Hosts: Polytrichastrum alpinum.

Note: ascospores and conidia were not found in my collections, so the ID here is not strongly supported.

Image of infected leaf under the dissecting microscope. Slit-like fruitbodies are indicated. Cairn Gorm, VC96, July 2019
A closer view of the fruitbodies between the leaf lamellae. Cairn Gorm, VC96, July 2019
Fruitbody in water (1000X). Cairn Gorm, VC96, July 2019
Host leaf section showing a fungal fruitbody. Mounted in water – 200X. Cairn Gorm, VC96, July 2019
Section of an empty fruitbody in water (1000X). Cairn Gorm, VC96, July 2019