Dimastigosporium
Dimastigosporium Faurel & Schotter, Revue Mycol., Paris 30: 156 (1965)
Ascomycota, genera incertae sedis
Coprophilous. Sexual morph: undetermined. Asexual morph: Conidiomata greenish brown to black, stromatic, cupulate, scattered, sessile, superficial, initially closed, eventually opening, setose. Conidiomatal setae brown to dark brown, divergent, septate, arising from the tissue of the periclinal wall. Conidiomatal wall composed of thick-walled, brown, pseudoparenchymatous cells at the base. Conidiophores arising from inner layer cells of conidioma, hyaline, cylindrical branched, septate, smooth-walled. Conidiogenous cells hyaline, holoblastic, cylindrical, attenuated towards apex, integrated or discrete, determinate, smooth-walled. Conidia hyaline, pyriform or subcylindrical, unicellular, smooth-walled, bearing appendages at each end or only at base; apical appendage absent or present, single, unbranched, arising as tubular extension of the conidium body; basal appendages, 2–4, unbranched, tubular, divergent, maintaining protoplasmic continuity with the conidium body (Yadav & Bhat 2009, Nag Raj 1993).
Type species: Dimastigosporium musimonum Faurel & Schotter, Revue Mycol., Paris 30: 157 (1965)
Notes: Dimastigosporium was proposed by Faurel and Schotter (1965) for a single species D. musimonum, a fungus collected on dung of Ammotragus lervia (wild sheep) from Central Africa. Nag Raj (1993) provided a revised description and detailed illustration for this genus. The second taxon D. yanense S.K. Yadav & Bhat was described from dung of cattle in India, which is distinguished from type species by its smaller conidia with an apical and three basal appendages (Yadav and Bhat 2009). Only the two species are accepted, but no molecular data is available. Dimastigosporium is compared with several coprophilous fungi. The details see notes of Pseudoneottiospora.
Distribution: Central Africa, India (Nag Raj 1993, Yadav and Bhat 2009).
Dimastigosporium musimonum (redrawn from Nag Raj 1993) a Vertical section of conidioma. b Conidiomatal setae. c Conidiophores, conidiogenous cells and developing conidia. d Mature conidia.
References:
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.
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