Irish lichens

Phaeographis smithii
Order: Ostropales       Family: Graphidaceae

Species: Phaeographis smithii

Growth type crustose.
Photos: On hazel. The Burren and Co. Cork, Ireland.

Very similar to P. dentritica but with less-cracked, smoother thallus and flatter and less-branched lirellae. Base of the exciple is open. The asci are 8-spored and spores are brown (colourless when young), 5-7 septate, 26-40 x 7-10 Ám. Microscope photos below.

Occurs on smooth, neutral to basic-barked trees and shrubs, most frequent in the western half of Ireland.
K+ yellow > red (crystals), C-, KC+ red, P+ yellowish-orange, UV-

Phaeographis smithii

Phaeographis smithii

Microscope photographs
Phaeographis smithii, ascospores

Phaeographis smithii, micro photo

Phaeographis smithii, ascus and spores
Phaeographis smithii.

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