Lecanora symmicta

Appearance

Thallus: crustose, warted-areolate, warts often coalescing to form a rimose crust

Prothallus: occasionally present, white, around thallus and between areoles

Areoles isodiametric in outline, sometimes irregularly incised or proliferating, 0.10-0.15 mm in diam., moderately to strongly convex, ecorticate but sometimes with a loose unorganised alga-free layer of various hyphae surface: yellowish or greenish beige to gray, dull, occasionally covered with terpenoid crystals, esorediate

Apothecia: rounded to flexuose, sometimes tuberculate, single or in groups of 2-3, rarely densely crowded, sessile with a ±constricted base, 0.35-0.70 mm in diam. disc: yellowish beige to orange-brown or ochre, sometimes with an olive tinge, weakly to strongly convex or rarely flat, dull, usually with a fine white pruina, rarely epruinose

Margin: lacking or rarely present as a weakly prominent rim and soon excluded, without a parathecial ring

Naming

Synonyms: Lecanora symmictera and Lecidea symmicta

Distribution

North America and Eurasia

Habitat

Conifer bark