Catillaria atomarioides Catillariaceae
Catillaria atomarioides

Growth type crustose. BLS conservation evaluation: LC NS
Chemistry unknown

Widespread on hard, siliceous rocks but probably very over-looked

Thin dark thallus, often looking like just a stain on the the rock. Very small black apothecia (0.1-0.2mm diam) with thin, slightly raised margins. True exciple green-black throughout. Spores 1-septate, 7-10 2.3-3.5 m. Epithecium dark brown to green-black. Microscope photographs below.

Similar: Catillaria chalybeia has larger apothecia and spores


Catillaria atomarioides

Catillaria atomarioides

Catillaria atomarioides

Microscope photographs
Catillaria atomarioides

Catillaria atomarioides
Catillaria atomarioides
Wool, Dorset. March 2017

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