Irish lichens
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Order: Lecanorales Family: Micareaceae
Species: Micarea prasina Photos: On shaded moss on sycamore. Snave, Cork, SW Ireland. Specimen identified by John Douglass Very variable and frequently sterile, requiring expert identification. Light green or pale to dark grey-green thallus comprised of +/- dense, +/- globose goniocysts that sometimes form granules. Apothecia (when present) whitish, pale to dark grey, brown-grey or blackish. White, greyish or black pycnidia. On tree stumps and mature trunks in old-growth woodland. Thallus and apothecia: chemical reactions negative. Greenish pigment on thallus surface is K and C +/- violet. Similar: Micarea micrococca |
Micarea prasina. October 2009