Description: E. hutchinsiae is the shaded rock equivalent of the bark epiphyte E. crassa (described elsewhere). In Ireland it is not unusual to find the two species growing side by side with E. crassa on the tree bole next to a vertical, acid outcrop and E. hutchinsiae on the rock. Look for it on shaded siliceous rocks in valley woodlands where the dark grey to olive green thallus supports the much larger, raised discs (0.3-1.0mm diam.) stamped with a conspicuous, whitish, horseshoe-like rim. Damp, shaded vertical rock faces in valley woodlands or alongside loughs. Throughout, except in central and south-east Ireland.

Key Identification Features:

• Dark grey thallus (could easily be overlooked as bare rock) bearing numerous raised discs with a distinctive white rim
• Often on vertical rock faces immediately behind old oak boles in shady, valley woodlands or along rocky lough margins.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Enterographa hutchinsiae at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Enterographa hutchinsiae at iNaturalist World Species Observations database.