Irish lichens
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Order: Arthoniales Family: Chrysothricaceae
Species: Chrysothrix candelaris Photos: On shaded oak trunk. Macroom, Co. Cork, SW Ireland. Thin, leprose thallus of bright or greenish-yellow, granular soredia that can form large, +/- continuous patches in humid woodland. Apothecia are absent in Britain and Ireland. Chemical reactions variable, C-, K, KC +/- orange, P+/- orange, UV+/- dull orange Found in dry, shaded crevices on rough-barked deciduous trees, often on oak. Occasional on vertical, shaded acidic rocks. Similar: Chrysothrix flavovirescens is dull greenish-yellow, chemistry negative and Psilolechia lucida is usually saxicolous |
Chrysothrix candelaris. October 2009