Caloplaca crenularia Teloschistaceae
Blastenia crenularia (Caloplaca crenularia)

Growth type crustose
Chemical results: Apothecia K+ crimson / purple

Found on coastal and inland siliceous rocks, well-lit or in shade.

Grey cracked or areolate thallus with crowded rusty orange-red roughened apothecia, their colour remaining unchanged when wet. Margins shiny.
The asci are 8-spored, ascospores 12-14 x 6-8 Ám.

Similar: C. ceraceae discs greenish when wet, matt margins

Caloplaca crenularia

Caloplaca crenularia
Caloplaca crenularia
Portland, Dorset

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