Acarospora badiofusca

Acarospora badiofusca

Observation - Acarospora badiofusca - UK and Ireland. Description: Brown, areolate thalli on mica-schist boulder at c. 800m. Apothecia purple-black, immersed, later sessile. Photobiont chlorococcoid. Paraphyses unbranched, septate, conglutinate, capitate, 4µm at apex. Asci many-spored; ascospores simple, colourless, most

Brown, areolate thalli on mica-schist boulder at c. 800m. Apothecia purple-black, immersed, later sessile. Photobiont chlorococcoid. Paraphyses unbranched, septate, conglutinate, capitate, 4µm at apex. Asci many-spored; ascospores simple, colourless, mostly ellipsoid, 4-6 x 2-2.5µm, but a small number are allantoid, to 11µm, and a few are more irregular (eg boomerang- or Y-shaped).