Irish lichens

Order: Peltigerales       Family: Lobariaceae

Species: Lobaria virens

Growth type foliose.
Photos: On mature Oak trunks. Glengarrif woods, Cork, SW Ireland.

Large thallus, grey-brown when dry, 'greasy' green when wet. Overlapping, short, unridged lobes, undersides whitish, tomentose. Soralia and isidia are absent. Apothecia frequent, brown with warted margins. Asci are 8-spored, spores pale brown or colourless, 1(-3) septate, 25-45 x 8-11 Ám. Microscope photographs below.

Found in old woodland on isolated trees and also on damp, shaded coastal rocks. The most common Lobaria species in SW Ireland.
Chemical reactions usually negative but sometimes K+ faint yellow, KC+ faint pink

Similar: L. amplissima. Rare, KC+ deep pink. Apothecia occasional

Lobaria virens

Lobaria virens       Lobaria virens

Lobaria virens       Lobaria virens

Microscope photographs
Lobaria virens, ascus

Lobaria virens, ascus, microscope photos
Dry Lobaria virens on mature oak. Glengarriff woods. January 2009

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