Alloneottiosporina
Alloneottiosporina Nag Raj, Coelomycetous Asexual morphs with Appendage-bearing Conidia (Ontario): 121 (1993).
Index Fungorum number: IF 26427; Facesoffungi number: FoF 07107, 3 morphological species (Species Fungorum 2022), 1 species with molecular data.
Parasitic on living leaves of undetermined species of bamboo, grass and Paspalum distichum. Sexual morph: Unknown. Asexual morph: Conidiomata brown to dark brown or black, pycnidial, separate, gregarious or confluent, immersed to semi-immersed, globose to subglobose, unilocular, glabrous, thick-walled, papillate, ostiolate. Ostiole circular to oval, papillate, centrally located. Conidiomatal wall composed of thick-walled, dark brown to pale brown or hyaline cells of textura prismatica or textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells of two kinds: a) those producing macroconidia lining the base and side walls of conidiomata, hyaline, annellidic, ampulliform to lageniform, smooth-walled; b) those producing microconidia restricted to the roof of the conidiomata near the ostiolar channel, hyaline, ampulliform, conical, lageniform or irregular, discrete, without annellations, smooth-walled. Macroconidia hyaline, ellipsoid, clavate, subcylindrical or fusiform, euseptate, constricted at the septa, smooth-walled, bearing mucoid appendages at both ends, apical appendgaes initially funnel-shaped or widely flared, eventually splitting to become tentaculiform; basal appendage less conspicuous than the apical appendages. Microconidia hyaline, ellipsoid or subglobose to obovate, acute or rounded at the apex, narrow and truncate at the base, smooth-walled (adapted from Li et al. 2020).
Type species: Alloneottiosporina carolinensis Nag Raj
Notes: Alloneottiosporina is characterised by brown to dark brown conidiomata, dark brown to pale brown conidiomatal wall, two kinds of conidiogenous cells, those producing macroconidia lining the base and side walls of conidiomata and those producing microconidia restricted to the roof of the conidiomata near the ostiolar channel. Alloneottiosporina morphologically resembles Neottiosporina, Stagonospora, Tiarospora and Tiarosporella (Nag Raj 1993). Li et al. (2020) added a new species A. thailandica based on morphology and phylogenetic analysis of LSU, ITS, SSU and TEF-1 sequences. Alloneottiosporina is morphologically and phylogenetically a distinct genus in Phaeosphaeriaceae but lacks ex-type cultures. The type species of Alloneottiosporina must be re-collected to confirm this generic placement. Molecular markers available for Alloneottiosporina are ITS, LSU, SSU, RPB2 and TEF-1.
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