Dothidella australis Speg., Anal. Soc. Cient. Argent. 10: 21 (1880).
≡ Polystomella pulcherrima Speg., Anal. Soc. cient. argent. 26(1): 53 (1888).
MycoBank number: MB 233978; Index Fungorum number: IF 233978; Facesoffungi number: FoF 06491; Fig. 125
Biotrophic or parasitic on leaves. Sexual morph: Ascostromata black, superficial to erumpent, pulvinate, and circular to suborbicular, elliptical or elongate, globose to subglobose, with five to numerous locules, with individual central ostioles, cells of ascostromata compsed of dark brown-walled cells of textura angularis. Peridium of locules composed of small heavily pigmented thick-walled cells of textura angularis. Hamathecium comprising numerous, hyaline, septate or aseptate pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, oblong, cylindro-clavate or obclavate with a short pedicel, apically rounded, with a small ocular chamber. Ascospores 2-seriate, ellipsoidal or obpyriform, hyaline, septate, 1-septate, upper cell wider and shorter than the lower cell, euseptate, constricted at the septum, lacking a sheath. Asexual morph: linked to Stictochorella (Wakefield 1940; Swart 1987).
Material examined: Argentina, Buenos Aires, Tigre; on the leaves of Solanum boerhaviaefolium (Solanaceae), O. Schnyder, April1880 (LPS 318, holotype).
Fig. 125 Dothidella australis (LPS 318, holotype). a Type material. b Appearance of black ascomata on the host. c Section of ascomata. d–f Asci g–l Ascospores. Scale bars: a = 1 cm, b = 1 mm, c = 50 µm, d, e = 15 µm, g–l = 10 µm