Helotiales » Helotiales genera incertae sedis

Apiculospora

Apiculospora Wijayaw., Camporesi, A.J.L. Phillips & K.D. Hyde, in Wijayawardene et al., Fungal Diversity: 10.1007/s13225-016-0360-2, [42] (2016)

Index Fungorum number: IF 551761; Facesofungi number: FoF 01425

Etymology: Named after its conspicuous apiculus on the conidia.

Saprobic on dead branches of Spartium sp. (Leguminosae, Dicotyledons). Sexual morph: Undetermined. Asexual morph: Conidiomata pycnidial, immersed, semi-erumpent at maturity, solitary, scattered, unilocular, globose, black. Conidiomata outer wall thin, composed of thick-walled, brown cells of textura angularis, inner wall thin, almost reduced to conidiogenesis region. Conidiophores reduced to conidiogenous cells. Conidiogenous cells enteroblastic, phialidic with percurrent proliferation, subcylindrical to ovoid, discrete, indeterminate, hyaline, smooth. Conidia ellipsoid to subcylindrical, straight to slightly curved, base truncate, apex with apiculus, 1-septate, sometimes constricted at septum, pale brown to dark brown, guttulate, thick-walled, verruculose.

Type species: Apiculospora spartii Wijayaw., W.J. Li, Camporesi, A.J.L. Phillips & K.D. Hyde

Notes: In morphology, our new genus resembles Placodiplodia which also has enteroblastic, phialidic conidiogenesis and 1-septate, brown conidia (Sutton 1980). However, Apiculospora has a conspicuous apiculus and guttulate conidia, while Placodiplodia lacks these characters. In sequence analyses, Apiculospora spartii clusters in Helotiales incertae sedis (Wijayawardene et al. 2016)

 

References:

 

Sutton BC 1980 The Coelomycetes. Fungi imperfecti with pycnidia, acervuli and stromata.

Wijayawardene NN, Hyde KD, Wanasinghe DN, Papizadeh M et al. 2016 Taxonomy and phylogeny of dematiaceous coelomycetes. Fungal diversity 77, 1316.

 

 

Last Update: 07 April 2021

 

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