Fungi Outer Hebrides

Family: Verrucariaceae

Verrucaria mucosa Wahlenberg

Type: Crustose

A thin, encrusting lichen, mid to dark green, found on rocks of the lower intertidal zone. Often with a white prothallus, it has a smooth, oily appearance. The perithecia are black, largely embedded in the thallus but more obvious when dry

Smith, C.W. et al. editors (2009) The Lichens of Great Britain and Ireland
Dobson, F.S. (2018) Lichens: an Illustrated Guide to the British and Irish Species