Sabahriopsis Crous & M.J. Wingf., Persoonia 34: 205 (2015)

Index Fungorum Number: IF 812447; MycoBank Number: MB 812447; Facesoffungi Number: FoF 15739

Etymology – Name reflects Sabah, Malaysia, where the fungus was collected.

Mycelium consisting of hyaline, smooth, branched, septate hyphae that contain hyphopodia-like structures. Conidiophores solitary, erect, subcylindrical, hyaline to pale olivaceous, straight to flexuous, septate. Conidiogenous cells integrated, subcylindrical, terminal and intercalary, hyaline to pale olivaceous, containing several erumpent, refractive denticles, apical and basal on conidiogenous cells; rim somewhat darkened. Conidia solitary, pale brown, granular to guttulate, obovoid, straight to somewhat curved, apex subobtuse, base obconically truncate, septate, median cell encased in flared mucoid appendage; hilum with cylindrical marginal frill.

Type species – Sabahriopsis eucalypti

Notes — Sabahriopsis is reminiscent of Chaetendophragmiopsis occurring on Eucalyptus citriodora in Brazil (Sutton & Hodges 1978), but differs from that genus in not having pigmented conidiophores arising from a stroma, and conidia lacking apical appendages. Chaetendophragmiopsis (based on C. pulchra) was regarded as a synonym of Endophragmiella by Kirk (1982), and subsequently excluded from the Genera of Hyphomycetes (Seifert et al. 2011). The type species of the latter two genera are morphologically distinct, and it is very likely that once recollected, the genus Chaetendophragmiopsis will need to be reinstated. Morphologically Sabahriopsis is also reminiscent of some genera in the Pyricularia complex (Klaubauf et al. 2014), but they are phylogenetically distinct. Similarly, the genus is also comparable to some genera in the Ramichloridium complex (Arzanlou et al. 2007), given the mucoid appendages, but it is phylogenetically distinct. Sabahriopsis is also reminiscent of Trichoconis, but the latter genus has conidia with apical appendages, and terminal conidiogenous cells (Seifert et al. 2011).