FIGURE 4 in Revision of Dimelaena Norman (Caliciaceae, Ascomycota) species containing usnic acid reveals a new species and a new combination from China

FIGURE 4. Morphology and anatomy of Dimelaena oreina (18-59460, KUN). A. Thallus of Dimelaena oreina. B. Convex non-linear lobes of radiate-plicate margin. C. Cryptolecanorine apothecia. D. Darkened margin around the areolae. E. Section of apothecium. F. Buellia-type ascospores, constricted at septum. G. Typical Bacidia-type ascus-apex. Scale bars: 1 mm (A, B); 0.5 mm (C, D); 25 μm (E); 5 μm (F, G).