Protoblastenia lilacina Psoraceae
Protoblastenia lilacina

Growth type crustose. BLS conservation evaluation: LC NR
Chemical results: K- (or very weak)

Common and widespread on limestone, both in natural habitats and on churchyard memorials but probably under-recorded

The thallus is endolithic or partly epilithic, whitish, grey or cream, the orange apothecia +/- strongly convex when mature. The spores are ellipsoidal, 12-16 x 6.5-8 Ám, hypothecium often violet. Sections in K dark yellow-orangish with a slight red tinge, shown in micrographs below

Similar: Protoblastenia calva similar appearance, strong K+ red


Protoblastenia lilacina

Protoblastenia lilacina

Micrographs
Protoblastenia lilacina

Protoblastenia lilacina
Protoblastenia lilacina
Puddletown and Corfe Mullen, Dorset. May 2017,December 2018

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