Lecanora gangaleoides Lecanoraceae
Lecanora gangaleoides

Growth type crustose
Chemical results: K+ yellow, P+ orange, UV- or pale orange.
Apothecia greenish-brown in section, the thecium dark greenish. Scratching the discs or thallus reveals orange anthraquinones.

Mainly coastal, on siliceous rocks.

Green-grey smooth or warted thallus with a white prothallus. Black convex discs with wide thalline margin, the thecium dark greenish. Lower medulla scratches orange. Microscope photograph below.

Similar: Tephromela atra, thecium purplish, UV+ bluish-white


Lecanora gangaleoides


Lecanora gangaleoides

Microscope photograph
Lecanora gangaleoides
Lecanora gangaleoides
Portland, Dorset. February 2016

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