Mycoleptodiscus Ostaz., Mycologia 59(6): 970 (1968)[1967].

MycoBank number: MB 9029; Index Fungorum number: IF 9029; Facesoffungi number: FoF 08094; 7 morphological species (Hernández-Restrepo et al. 2019), 3 species with molecular data.

Type species: Mycoleptodiscus terrestris (Gerd.) Ostaz., Mycologia 59(6): 970 (1968) [1967].

Leptodiscus terrestris Gerd., Mycologia 45(4): 552 (1953).

Notes: The type species was included in the invalid genus Leptodiscus (Gerdemann 1953) which was placed in Microthyriaceae (von Arx and Müller 1975; Lumbsch and Huhndorf 2007). Thongkantha et al. (2009) provided the first phylogenetic analysis of a Mycoleptodiscus species (M. coloratus) based on LSU sequence data, and placed it in Magnaporthales (Sordariomycetes). However, Crous et al. (2018a) indicated that Mycoleptodiscus, based on phylogenetic placement of the type species, M. terrestris, is a member of Muyocopronales. More discussion can be seen in Hernández-Restrepo et al. (2019). The sexual morph of this genus has not been described, except for M. affinis, it however was introduced as Omnidemptus affinis by Cannon and Alcorn (1994). The major characters are restricted to species characterized by cylindrical conidia with appendages at one or both ends. Conidiogenous cells lack a collarette, are solitary or aggregated, mono- or polyblastic, sympodial, often denticulate or phialidic, globose or ampulliform. Conidia are cylindrical, the appressoria have a visible pore surrounded by dark radial lines, and sclerotia (Hernández- Restrepo et al. 2019)

Species

  • Mycoleptodiscus terrestris