Fig. 2.
Roselliniella euparmeliicola (BM holotype). a. Infected thallus of Parmelia meiophora; b. urceolate warts with perithecia; c. vertical section of perithecium; d. vertical section of ostiolar region of perithecium; e. vertical section of perithecial wall; f. asci containing young ascospores, some with a medium septum (arrows); g, h. mature ascospores. — Scale bars: a = 2 mm; b = 250 μm; c = 100 μm; d, e = 50 μm; f–h = 10 μm.