Arthonia molendoi Arthoniaceae
Arthonia molendoi #

Lichenicolous, photographs on Xanthoria parietina

Scattered distribution, occurs on Caloplaca and Xanthoria species. Only recently separated from A. epiphyscia.
BLS conservation evaluation: LC NR

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. Microscope photograph below.

Similar: A. epiphyscia is occasional on Physcia adscendens and P. dubia. Arthonia phaeophysciae occurs on Phaeophyscia spp.

Arthonia molendoi

Microscope photograph
Arthonia molendoi
Arthonia molendoi
On Xanthoria parietina. Shell Bay, Dorset. December 2013

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