Species: Usnea subfloridana
Photos: On Larch branch. Gougane Barra, Cork, SW Ireland.
Identification of fertile specimen by Mike Simms
Base blackened, branches neither constricted, warty or annulated (with pale rings). Erect and bushy, becoming sub-pendulous. Round patches of soredia and insidia. Infrequently fertile, apothecia are smaller than those of Usnea florida.
Widespread on trees (often on twigs), fences and rocks.
Medulla K+ yellow or orange, P+ yellow to orange-red instantly.
Similar: Usnea wasmuthii
Usnea subfloridana. Gougane Barra, Co.Cork