Irish lichens
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Order: Lecanorales Family: Ramalinaceae
Species: Bacidia biatorina Photos: Glengarriff woods, Co. Cork, SW Ireland. Provisional identification by Andy Acton, needs microscopic confirmation Thallus granular or granular-isidiate, pale grey-green, upper surface of granules often grey or brown. Apothecia similar to B. laurocerasi but larger (to 1.3mm), orange-brown or black. Spores 9-16(-22) septate, (43-)60-75(-88) x 2.5-3(-4) µm but it is often sterile. Pycnidia rare, pale orange, the conidia curved, 9-16 x 0.5 µm. Chemical reactions negative. Rare in Ireland, occurs on trunks of mature deciduous trees (often Oak) in old woods and former parklands. Similar: Sterile B. rubella has coarser granules, pale upper surface |
Bacidia biatorina April 2010