Venturiales » Venturiales genera incertae sedis


Cylindrosympodioides Crous & M.J. Wingf., in Crous et al., Persoonia 36: 336 (2016).

Index Fungorum number: IF 817076; Facesoffungi number: FoF 12071, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprobic or pathogenic on host. Mycelium consisting of smooth, pale brown, branched, septate, hyphae. Sexual morph: Unknown. Asexual morph: Conidiophores erect, medium brown, cylindrical, septate. Conidiogenous cells terminal, subcylindrical, pale brown, proliferating sympodially, scars unthickened, slightly darkened, flat. Conidia solitary, hyaline, acicular, straight to slightly curved, guttulate, multiseptate, apex subobtusely rounded, base prominently truncate, unthickened but slightly darkened. Fusicladium-like synasexual morph developing on SNA, intermixed on hyphae with Cylindrosympodioides morph. Conidiophores reduced to conidiogenous cells, brown, ampulliform to fusoid-ellipsoid, proliferating sympodially, scars somewhat darkened. Conidia solitary, brown, verruculose, guttulate, thick-walled, fusoid-ellipsoid, septate, widest at median septum, apex sub obtusely rounded, base truncate (adapted from Crous et al. 2016).


Type species: Cylindrosympodioides brabeji Crous & M.J. Wingf.


Notes: Cylindrosympodioides share similar morphological characters with Cylindrosympodium, but differs in that the former has acicular conidia with slightly thickened hila, and a fusicladium-like synasexual morph, producing conidiophores that are reduced to conidiogenous cells. In the phylogenetic analysis of Crous et al. (2016), Cylindrosympodioides is closely related to Venturia, whereas Cylindrosympodium forms a distinct sister clade in Venturiaceae. The taxonomic placement of Cylindrosympodioides is uncertain and is currently in Venturiales genera incertae sedis. Molecular markers available for Cylindrosympodioides are ITS and LSU.


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