Aquaticheirospora
Aquaticheirospora Kodsueb & W.H. Ho, Bot. J. Linn. Soc. 155(2): 286 (2007).
Index Fungorum number: IF 29188; Facesoffungi number: FoF 08211, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Saprobic on wood. Sexual morph: Unknown. Asexual morph: Mycelium immersed in the substratum, hyaline to pale brown. Conidiomata synnema, erect, brown. Conidiogenous cells monoblastic, determinate, hyaline or pale brown, oblong. Conidia acrogenous, holoblastic, hyaline to pale brown when immature and brown when mature, chiroid, euseptate, arms vertically inserted in different planes, on a basal cell; basal cells pale brown, cuneiform truncate, smooth, thin-walled; arms discrete, mostly divergent, cylindrical. Conidial secession rhexolytic (adapted from Kodsueb et al. 2007).
Type species: Aquaticheirospora lignicola Kodsueb & W.H. Ho
Notes: Aquaticheirospora is characterised by hyaline to pale brown mycelium, monoblastic, determinate conidiogenous cells, acrogenous, holoblastic, hyaline to pale brown conidia and rhexolytic conidial secession. Aquaticheirospora can be differentiated from other genera in Dictyosporiaceae in having synnematous conidiomata and conidia that are formed on conidiogenous cells borne at the apices of synnemata. Aquaticheirospora resembles other chirosporous genera such as Cheiromyces, Chelisporium, Dictyosporium, Digitodesmium, Prosthemium in producing chirosporous conidia. Aquaticheirospora differs from other asexual morphic chirosporous genera such as Cheiromyces and Cheiromycina in having euseptate conidia while the latter two genera have distoseptate conidia. Aquaticheirospora differs from Cheiromycina in having conidia that are produced on synnemata while those of Sirothecium, Prostemium and Tetranacrium are eustromatic. Cheiromyces, Dictyosporium and Digitodesmium have sporodochial conidiomata and Psammina has acervular conidiomata. Aquaticheirospora is a distinct and well-defined genus in Dictyosporiaceae. Molecular markers available for Aquaticheirospora are ITS, LSU and SSU.
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