Irish lichens

Degelia plumbea
Order: Peltigerales       Family: Pannariaceae

Species: Degelia plumbea sens. str.

Growth type foliose. Identified by John Douglass
Photos: On Oak. Tomies wood, Killarney, Co. Kerry, SW Ireland.

Usually fertile, squamules present but lacks isidia. Thin lobes, bluish-grey, tinged +/- yellow-brown, network of linear maculae most noticeable towards margins. Blue-black hypothallus. Apothecia frequent, light reddish-brown. Ascus 8-spored, spores simple, colourless, 17-25 x 7-10 Ám. Microscope photographs below. Chemical reactions negative.

Occurs on well-lit trees in un-disturbed woodland, occasionally found on coastal rocks. Most frequent in western Ireland.

Similar: Degelia cyanoloma was recently restored to specific rank, having been formerly included with D. plumbea.
Also similar: Degelia atlantica and Pannaria rubiginosa

Degelia plumbea sens str

Degelia plumbea sens str

Microscope photographs
Degelia plumbea, microscope photo

Degelia plumbea, microscope photo
Degelia plumbea sens str. November 2009

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