Note: the smallest of the Ephebe species, with thread-like thalli recalling a Stigonema-cushion, terminal pycnoascocarps (to 0.1 mm in diam.) with a spinulose margin, 16-spored asci, and simple, subspherical ascospores (4-6 × 3-5 μm); based on a type from Greenland, on humid rocks; very rare, with a single record from the Eastern Alps (Austria).