Irish lichens
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Order: Verrucariales Family: Verrucariaceae
Species: Verrucaria Photos: Above HWM, Allihies, Co. Cork, SW Ireland. Correction: Photos are V. viridula, not V. internigrescens Thallus superficial, whitish-grey or pale brown. Perithecia are not covered by thallus, 0.32-0.78 mm diam with a well developed involucrellum. Spores (15-)19.5-25(-30) x (7.5-)9-11.5(-13) µm. Chemical reactions negative Coastal on damp siliceous rocks in the upper maritime zone. Similar: Verrucaria muralis. Spores usually narrower. |
Verrucaria March 2012