Myelosperma Syd. & P. Syd., Ann. Mycol. 13: 38 (1915)

Index Fungorum number: IF 3351; MycoBank number: MB 3351; Facesoffungi number: FoF 06194; 5 morphological species (Species Fungorum 2020).

Type species – Myelosperma tumidum Syd. & P. Syd.

Notes – Myelosperma was established by Sydow & Sydow (1915) to accommodate Myelosperma tumidum which occurs on the dead rachis of Cocos nucifera. Four species were introduced from different hosts, substrates and countries (Ahmad 1971, Hyde et al. 1996, Aptroot et al. 1998, Hyde & Wong 1999).

Figure 1 – Myelosperma tumidum (Material examined – SRI LANKA, Peradeniya, on the dead rachis of Cocos nucifera L. (Arecaceae), 1912, T. Petch, S (Swedish Museum of Natural History), F9909, F9911, Petch 3369, holotype). a Herbarium package. b Host. c-e Pseudostromata. f Horizontal section of ascomata. g, h Vertical section through clustered multiloculate ascomata. i Peridium. j Paraphyses. k-m Asci. n Apex of ascus with the refractive subapical ring. o, p Ascospores with sheath. q, r Ascospores. Scale bars: b = 1 cm, c, d = 1000 µm, e = 200 µm, f = 500 µm, j-m = 100 µm, n-r = 20 µm.

Species

  • Myelosperma tumidum