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Order: Peltigerales Family: Collemataceae
Species: Collema flaccidum
Photos: On rock in upland stream. Ballingeary, Cork, SW Ireland. Thin dark olive-green to black lobes, smooth, wavy, +/- rounded, margins usually entire. Centre and margins with numerous isidia, globose becoming flattened. Apothecia are very rare. Occurs mainly in N and W Ireland on acidic rocks by streams, waterfalls and lough edges, also on damp, mossy woodland rocks. Chemical reactions negative. Similar: Collema glebulentum and Collema subflaccidum |
Collema flaccidum. Ballingeary area, Co.Cork. June 2009