Irish lichens

Arthonia molendoi

Order: Arthoniales       Family: Arthoniaceae

Species: Arthonia molendoi

Lichenicolous fungus
Photos: Drinagh area, Co. Cork, SW Ireland.
Identified by Brian Coppins

Convex black apothecia (0.1-0.3mm), epithecium black, hypothecium hyaline or straw-coloured. Asci 4-8 spored, spores 1-septate, constricted at septum, cells unequal, 8-11 x 4-6 Ám.

Scattered distribution, occurs on Caloplaca and Xanthoria species. Only recently separated from A. epiphyscia.

Shown here on the thallus of Xanthoria parietina

Arthonia molendoi
Arthonia molendoi on Xanthoria parietina. December 2011

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