Lecanora pulicaris forme lignicole maritime.

      This relatively common form differs from Lecanora pulicaris in that it occurs on wood near the sea: wooden shipwrecks, wooden maritime structures, etc. K+ yellow, KC+ yellow, C-, P+ orange. The medulla under the hymenium of the apothecia contains large crystals insoluble in KOH, simple spores but with two globules which can give the appearance of a two-celled spore, 11-15 x 6.5 x 8 µm according to our measurements.

N.B. It is distinguished from other similar related species that can occur on the same substrates by its P+ orange reaction.