Irish lichens

Verrucaria aethiobola

Order: Verrucariales       Family: Verrucariaceae

Species: Verrucaria latebrosa (Verrucaria aethiobola)

Growth type crustose
Photos: Upland stream, Ballingeary, Co. Cork, SW Ireland.

Pale greyish-brown to dark brown lightly cracked thallus with small projecting perithecia, apex often slightly flattened. Asci 8-spored, spores (23-)25-28(-29.5) x (8-)10.5-13(-14) Ám. Very variable and thallii on drier or more exposed rock can be thinner and with few cracks.

Found on unshaded or shaded siliceous rocks in freshwater rivers, streams and lakes.

Verrucaria aethiobola April 2012

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