Ascomycota, genera » Ascomycota, incertae sedis

Aphanofalx

Aphanofalx B. Sutton, Trans. Br. mycol. Soc. 86(1): 21 (1986)

Ascomycota, genera incertae sedis

Saprobic on the host plant. Sexual morph: undetermined. Asexual morph: Conidiomata black, pycnidial, scattered to gregarious, immersed to semi-immersed, globose to subglobose or oval, unilocular, glabrous, ostiolate. Ostiole single, circular or oval, centrally located. Conidiomatal wall composed of thick-walled, brown to hyaline cells of textura angularis, becoming darker at the ostiolar region. Conidiophores formed from the innermost layer wall cells of the conidiomata, hyaline, short-cylindrical to doliiform, branched, and septate, smooth-walled, invested in mucus. Conidiogenous cells hyaline, enteroblastic, annellidic, cylindrical or lageniform, integrated or discrete, indeterminate, smooth-walled, with numerous inconspicuous to conspicuous percurrent proliferations toward apex. Conidia hyaline, fusiform, lunate or irregular, curved, unicellular, smooth-walled, bearing a broad tubular, plectronoid to podiform, unbranched, excentric basal appendage (Nag Raj 1993).

 

Type species: Aphanofalx mali B. Sutton, Trans. Br. mycol. Soc. 86(1): 22 (1986)

 

Notes: Two species, Aphanofalx irregularis B. Sutton & Abbas on twigs of Salvadora oleoides (Salvadoraceae) and A. mali B. Sutton on lenticels of Malus pumila (Rosaceae) were accepted in Aphanofalx (Nag Raj 1993). Aphanofalx shares a similar form of conidiomata, conidiogenous cells and conidia with Pseudoseptoria, but is distinguished by its conidia bearing a basal appendage. There is no molecular data available for this genus.

 

Distribution: Pakistan, Zambia (Nag Raj 1993).

 

 

 

Aphanofalx mali (redrawn from Nag Raj 1993) a Conidia. b Vertical section of conidioma. c Conidiophores, conidiogenous cells and developing conidia.

 

Reference

 

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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