Lecanora semipallida Lecanoraceae
Myriolecis semipallida (Lecanora semipallida)

Growth type crustose
Chemical results: Thallus negative. Apothecium margin K+ yellow, C+/- yellow, KC+ yellow, P-. Discs UV+ yellow or orange

Common and widespread on calcareous rocks and especially on hard limestone

Endolithic grey to blackish thallus with groups of apothecia with wide, white margins. Discs pale brown to greyish-brown, sometimes slightly pruinose. Hymenium covered with dense layer of epithecial granules that dissove in K

Similar: Lecanora dispersa, epithecial granules insoluble in K

Lecanora semipallida

Lecanora semipallida
Lecanora semipallida
On concrete block. Brands Bay, Dorset. January 2015

All images used are copyright. Please contact me if you find errors.