Stigmidium congestum Mycosphaerellaceae
Stigmidium congestum #

Lichenicolous.Photographs on Lecanora chlarotera

Parasitic in the apothecia of the Lecanora chlarotera group

Small, black, subglobose perithecia are immersed in the host apothecia causing them to become completely blackened. Asci 8-spored, the spores hyaline, 1(-3) septate, (11-)12-14(-16) x (2.5-)3-4 Ám with a finely verruculose epispore. Microscope photograph below.

Similar: Stigmidium punctillum is found on Lecania species


Stigmidium congestum


Stigmidium congestum

Microscope photograph
Stigmidium congestum
Stigmidium congestum
Studland, Dorset. May 2015

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