Catillaria chalybeia Catillariaceae
Catillaria chalybeia

Growth type crustose. Chemical reactions negative

Common on nutrient-enriched siliceous rocks, pebbles and walls. Occasionally found on timber and tree trunks.

Very variable. Thallus thin or cracked-areolate, grey, greenish or grey-black. Black prothallus often present. Apothecia flat or +/- convex, discs black with thin margins. Spores are 1-septate, 8-12 x 3-5 Ám. Hymenium usually bluish-green at base, paraphyses with dark, swollen tips. Photobiont Myrmecia. Micro photo below.

Can be confused with other Catillaria ssp., Micarea erratica and saxicolous Amandinea punctata


Catillaria chalybeia


Catillaria chalybeia

Microscope photograph
Catillaria chalybeia
Catillaria chalybeia
On pebble. Studland Heath, Dorset. April 2013

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