Irish lichens

Arthopyrenia analepta

Order: Incertae sedis       Family: Arthopyreniaceae

Species: Arthopyrenia analepta

Growth type crustose.
Photos: On Birch and Hazel. Co. Cork, SW Ireland.
Specimen immediately below identified by John Douglass

Inconspicuous thin or evanescent non-lichenised thallus, often brownish on Hazel and Oak. No orange colour when scratched. Large, +/- oval perithecia, base of discs surrounded by a dark, flat, halo-like shadow. Pycnidia are sometimes present. The asci are cylindrical, the spores 1-septate with a wide, colourless perispore, 15-23 x 5.5-8 Ám. Micro photos below. Chemical reations negative.

Occurs on smooth, moderately shaded bark and is often an early coloniser of twigs and small branches.

Similar: Arthopyrenia punctiformis


Arthopyrenia analepta


Arthopyrenia analepta


Arthopyrenia analepta

Microscope photographs
Arthopyrenia analepta


Arthopyrenia analepta
Arthopyrenia analepta September, November 2009 and January 2012

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