Fungalpedia – Note 315, Inaequalispora
Inaequalispora L. Lombard & Crous
Citation when using this entry: Perera et al. 2024 (in prep.) – Fungalpedia, genera described in 2016.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Stachybotryaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi.
Lombard et al. (2016) introduced Inaequalispora based on Myrothecium prestonii, which clustered distant to the Myrothecium s.str. clade in the analysis of cmdA, ITS, rpb2, and tub2 loci. Subsequently another two species were added to the genus (Lombard et al. 2016; Gordillo & Decock 2017). Inaequalispora species produce sporodochial conidiomata that are stromatic, superficial, and scattered or gregarious on substrates. Sporodochia are orbicular or irregular in shape with a white setose fringe encircle an olivaceous green to dark green slimy mass of conidia. The stroma is weakly developed and hyaline with an angularis texture. The setae are septate, flexuous, hyaline, and thick-walled. They taper to an obtuse and slightly verrucose apex. The conidiophores are macronematous, penicillately branched, hyaline, and smooth to slightly verrucose at the base. Conidiogenous cells are phialidic, hyaline, smooth-walled, subcylindrical and gradually narrowed towards the tip. They showed visible collarette and periclinal thickening. Inaequalispora is characterized by aseptate, fusiform to ellipsoidal to asymmetrically ellipsoidal conidia which may have a slightly curved acute apex and a narrow truncate base. Conidia are hyaline and smooth-walled, with a funnel-shaped mucoid apical appendage. However, the sexual morph remains undetermined (Lombard et al. 2016, Tulloch 1972). Inaequalispora species are associated with soil and submerged plant material (Lombard et al. 2016; Gordillo & Decock 2017).
Type species: Inaequalispora prestonii (M.C. Tulloch) L. Lombard & Crous
Other accepted species: Species Fungorum, search Inaequalispora
Figure 1 – Inaequalispora prestonii. a Synnema. b Marginal hypha. c Seta. d Conidiophore and phialides. e Conidia. Scale bars: a–e = 10 μm. Redrawn from Tulloch (1972)
References
Tulloch M. 1972 – The genus Myrothecium. Mycological Papers 130, 1–42.
Entry by
Rekhani Hansika Perera, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand.
(Edited by Kevin D. Hyde, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)
Published online 27 August 2024