Mintera reticulata

Mintera reticulata (Starbäck) Inácio & P.F. Cannon, Mycol. Res. 107(1): 86 (2003).

≡ Parmularia reticulata Starbäck, Ark. Bot. 5(no. 7): 6 (1905).

            Index Fungorum number: IF 373774; Facesoffungi number: FoFxxx, Fig. 1

Description:

Parasitic on upper surface of leaves. Hyphae 2.5–4.5 μm wide, growing out from ascomata, brown, septate, branching, with sub globose, brown, smooth-walled appressoria measuring 5–6 × 4–5 μm. Sexual morph: Ascostromata 1–1.8 mm diam., solitary to gregarious, or in groups, superficial, dark brown to black, coriaceous, star-shaped, flattened, with a longitudinal slit, easily detachable. Locules 140–230 μm wide, 200–600 μm high, immersed in ascostromata, oblong, semicircle in longitudinal ridges radiating from the centre. Peridium 5–15 μm wide, composed of hyaline to dark brown cells of textura angularis. Asci 40–55 × 15–25 μm (x̅ = 48.5 × 21 μm, n = 20), bitunicate, fissitunicate, broadly cylindrical to clavate, or obclavate, subglobose, with a distinct ocular chamber. Ascospores 14–18 × 5–8.5 μm (x̅ = 16.5 × 7.2 μm, n = 20), 2–multi-seriate, hyaline to pale brown, ellipsoid to ovate with rounded ends, 1-septate, constricted at the septum, upper cell larger, narrow at lower cell, smooth-walled. Asexual morph: Undetermined.

Material examined: Paraguay, Colonia Risso. Pr. Rio Apa, on upper of leaves, 30 September 1893, Leg G. A Malme, (GZU 000306012, Isotype).