Fungi Outer Hebrides


Family: Rhizocarpaceae

Rhizocarpon reductum Th. Fr.

Type: Crustose

Cracked-areolate, greyish to mousey-brown thallus with thin black prothallus. Black apothecia with thin, persistent margin, initially inset later becoming slightly raised. Very common throughout Britain, on pebbles and other siliceous rocks

Determiner: 
Chris Johnson

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

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