Maritime Verrucaria

Maritime Verrucaria

Observation - Maritime Verrucaria - UK and Ireland. Description: Found growing on sea walls at head height, probably just above high tide mark. Only a few small patches growing amongst V.maura. Did consider V.prominula based on 'perithecia often fused together' but other features don't match. Most maritime Verrucaria p

Found growing on sea walls at head height, probably just above high tide mark. Only a few small patches growing amongst V.maura. Did consider V.prominula based on 'perithecia often fused together' but other features don't match. Most maritime Verrucaria perithecia in Dobson aren't described like this one. Any comments will be most welcomed, thanks. - final image added 10/5/14 showing ridges on thallus - see comment below.