Irish lichens
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Order: Lecanorales Family: Physciaceae
Species: Heterodermia obscurata (Heterodermia japonica) Photos: On Salix. Killarney, Co. Kerry, SW Ireland. Identified by John Douglass Pale grey thallus (greener when wet), usually forming spreading rosettes. Flat, radiating lobes with lip-shaped soralia and short black cilia on the tips. Apothecia very rare, discs red-brown with crenulate or sorediate margins. Lower surface white with brownish hyphae. Thallus K+/- yellow, C-, KC-, P- Occurs on mossy trunks and branches of Willow, Oak, Hazel and Ash in undisturbed woods and sallow carr. Also found on coastal turf. |
Heterodermia japonica. November 2010