Graphidaceae (previously Thelotremataceae) Diploschistes scruposus Growth type crustose Chemical results: K+/- yellow, C+ red, P-, UV- Found on siliceous or slightly basic rocks, often when nutrient-rich Areolate or continuous, thick greyish thallus, often tinged yellowish when in shade. Pruina absent. Immersed black urceolate apothecia, frequently pruinose with raised thalline margins. Spores initially colourless and multi-septate, becoming dark and muriform when mature. Similar: Diploschistes muscorum. Initially parasitic on Cladonia ssp.

Diploschistes scruposus
Wool and Lychett Matravers, Dorset.