Irish lichens

Catillaria nigroclavata

Order: Lecanorales       Family: Catillariaceae

Species: Catillaria nigroclavata

Growth type crustose
Photos: On tree trunk, Aughinish, Co. Limerick, Ireland.
Identification needs confirming

Thin, often inapparent thallus, pale grey to dark grey-brown. Apothecia 0.15-0.3mm, dark brown to black.Hymenium colourless. Spores 8-10 x 2.5-3 Ám. Microscope photographs below.

Found on both rough and smooth barked deciduous trees, can be locally common on twigs in young woodland.


Catillaria nigroclavata


Catillaria nigroclavata

Microscope photographs
Catillaria nigroclavata


Catillaria nigroclavata
Catillaria nigroclavata April 2012

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