Dictyodothis Theiss. & Syd., Annls mycol. 13(3/4): 346 (1915).
Index Fungorum number: IF 1527, MycoBank number: MB 1527, Facesoffungi number: FoF 00076
Type species − Dictyodothis berberidis (Rehm) Theiss. & Syd., Annls mycol. 13(3/4): 346 (1915).
Saprobic on dead twigs, stems and branches of land plants. Sexual state: Ascostromata black, immersed, erumpent at maturity, aggregated or in clusters, scattered, discoid to pulvinate, globose to subglobose, coriaceous, multiloculate, with 8−10 locules, cells of ascostromata composed of several layers of dark brown to black cells of textura prismatica and textura angularis. Locules globose to subglobose, ostiolate. Hamathecium lacking pseudoparaphyses. Peridium of locules comprising light brown to brown cells of textura angularis. Hamathecium lacking pseudoparaphyses. Asci 8-spored, bitunicate, clavate to sub-clavate or cylindrical, pedicellate, thickened with a short broad pedicel and rounded at apex, with a clear ocular chamber. Ascospores overlapping uniseriate to biseriate, yellowish brown to dark brown, muriform, with 3−6 transverse septa and 1−5 longitudinal septa, constricted at the primary septum, oblong, ovoid to fusoid, part above the central septum wider. Asexual state: Unknown.
Notes − Dictyodothis was introduced by Theissen and Sydow (1915) to accommodate Dictyodothis berberidis (Rehm) Theiss. & Syd. and Dictyodothis excavata (Cooke & Ellis) Theiss. & Syd. under the family Dothideaceae. As the type genus they assigned Dictyodothis berberidis which has been referred to Curreya. Tilak and Kale (1969) introduced two species with paraphyses, Dictyodothis acaciae Tilak, S.B. Kale & S.V.S. Kale and D. grewiae Tilak, S.B. Kale & S.V.S. Kale,. Later Von Arx and Müller (1975) included this genus in the family Pleosporaceae based on “paraphysoids” in the locules. Barr (1981) showed that “paraphysoids” are the walls and strands of cytoplasmic remnants of discharged asci and ascospores are similar with those of Dothidea sambuci. Therefore, Barr (1981) included Dictyodothis again in the Dothideaceae. Barr (1987a), Lumbsch and Huhndorf (2010) also listed Dictyodothis under the Dothideaceae. No asexual states have been reported for this genus. Currently there are around eight species epithets listed in Index Fungorum (2014). Because of the erumpent, multiloculate ascostromata this genus should be included in Dothideaceae. However, Dictyodothis is distinct in having yellowish-brown, muriform ascospores. No sequence data is available for this species.
Species