Lecidella stigmatea Lecanoraceae
Lecidella stigmatea

Growth type crustose
Chemical results: Thallus K +/- yellow, C-, P-, UV-

Common on cement, mortar, urban walls and paths and on base-enriched or weakly calcareous siliceous rocks.

Very variable. Thallus pale grey, whitish or stained green, evanescent, cracked or +/- areolate. Apothecia have dark brown or black discs, margins becoming excluded. Epithecium purple-brown, hypothecium pale yellow or colourless. Spores simple, 10-16 x 6-9 Ám. Micro photograph below.

Similar: Clauzadea monticola has a reddish-brown hypothecium


Lecidella stigmatea


Lecidella stigmatea

Microscope photograph
Lecidella stigmatea
Lecidella stigmatea
Parkstone and Sturminster Marshall, Dorset. March 2012 and 2014

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