Verrucaria squamulosa Verrucariaceae
Verrucaria romeana (Verrucaria squamulosa)

Growth type crustose
Chemical results negative

Usually in damp sheltered situations on stone, brick, tiles, concrete etc.

Greenish to pale brown thallus of +/- overlapping, incised sub-squamulose areoles on a thick, black, well-developed involucrellum. The perithecia are mostly half-immersed and half to completely covered by the areoles, spores (23-)24-27(-28) x (8-)9-13(-15) Ám. Micrographs below.

Prior to 2013 was regarded as a form of Verrucaria viridula. Could be confused with wet Verrucaria macrostoma


Verrucaria squamulosa

Verrucaria squamulosa

Microscope photographs
Verrucaria squamulosa

Verrucaria squamulosa
Verrucaria squamulosa
East Holme, Dorset. December 2015

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