Irish lichens
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Order: Ostropales Family: Incertae sedis
Species: Thelopsis rubella Photos: Glengarriff woods, Co. Cork, SW Ireland. Identification by Andy Acton Thin, waxy thallus, grey, grey-green or brownish. Reddish-brown perithecia, becoming orange and +/- gelatinous when wet. Short-lived, most abundant in winter and early spring. Ascus with 100-150 spores, mainly 3-septate. Ascospores 12-16 x 4-8 µm, the ends rounded. Occurs in shallow cracks and rain tracks on the trunks of mature broad-leaved trees. Often found in association with the liverwort Metzgeria furcata. An 'Old forest' indicator species. Similar: Pachyphiale carneola |
Thelopsis rubella April 2010