Order: Peltigerales       Family: Peltigeraceae Species: Ricasolia virens (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, whitish and tomentose below. 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 µm. Micrographs below. Found in old woodland on isolated trees and also on damp, shaded coastal rocks. Most common Lobaria in SW Ireland. Chemistry usually negative, sometimes K+ faint yellow, KC+ faint pink Similar: L. amplissima. Rare, KC+ deep pink. Apothecia occasional

     

     

Microscope photographs



Dry Lobaria virens on mature oak. Glengarriff woods. January 2009