Order: Lecanorales       Family: Parmeliaceae Species: Hypotrachyna revoluta sens str. Growth type foliose. Photos: On rock. Ballingeary, Cork, SW Ireland. Identification confirmed by Neil Sanderson Orbicular whitish-grey thallus, the short, incised lobes with raised tips. The marginal lobes have fine, terminal soredia. Apothecia are rare, the margins +/- sorediate. The lower surface is paler than that of H. afrorevoluta, rhizines sparse, not extending to margins. Found on nutrient-rich trees and rocks, but less frequent than H. afrorevoluta. Cortex K+ yellow, medulla K-, C+ red, KC+ red, P-, UV- or dull orange Similar: H. britannica. Lobes narrower, dark subterminal soredia.

Hypotrachyna revoluta sens. str. Ballingeary area, Co.Cork. February 2009