Verrucaria fusconigrescens Verrucariaceae
Verrucaria fusconigrescens

Growth type crustose
Chemical results negative

Can be frequent on siliceous coastal rocks above HWM, sometimes also found some distance inland.

Perithecia +/- half-immersed, apex projecting with +/- inconspicuous ostiole. Well-developed areolate brown thallus with a darker prothallus, sometimes locally pruinose. Spores (17-)19-24(-26) x (6.5-)8-10(-11) Ám. Microscope photograph below.

Similar: Verrucaria nigrescens occurs on calcareous rocks


Verrucaria fusconigrescens


Verrucaria fusconigrescens

Microscope photograph
Verrucaria fusconigrescens
Verrucaria fusconigrescens
Studland beach, Dorset. March 2013

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