Bacidia arceutina Ramalinaceae
Bacidia arceutina

Growth type crustose
Chemical results negative. Hymenium colourless

Infrequent on branches and trunks of nutrient-rich, basic-barked trees

Thallus is often +/- immersed, cream, grey or grey-green, smooth or minutely warted. Apothecia are pale-brown and flat, becoming blackish and +/- globose. Hymenium and hypothecium colourless. Spores are colourless, 3-7 septate, 33-55(-67) x 1-5-2(-2.5) Ám. Micro photo below.

Similar Bacidia species have green or purple apothecial pigments.
Lecidea erythrophaea has simple spores.


Bacidia arceutina


Bacidia arceutina

Microscope photograph
Bacidia arceutina
Bacidia arceutina
Studland, Dorset. November 2013

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