Verrucaria viridula Verrucariaceae
Verrucaria viridula

Growth type crustose
Chemical results negative

Common in man-made and natural habitats on calcareous rocks, limestone, mudstone, mortar and bricks.

Variable. Large perithecia are half to fully immersed in +/- areolate pale brown thallus. Thallus can also be whitish, grey or green-grey, sometimes +/- immersed and appearing as brown flecks on substrate. Spores simple, 27-34(-40) x 12-22 Ám.

Similar: Verrucaria nigrescens and Verrucaria macrostoma


Verrucaria viridula


Verrucaria viridula


Verrucaria viridula
Verrucaria viridula
Parkstone and Lytchett heath, Dorset. February 2013 and 2014

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