Apiospora sinense K. D. Hyde, J. Fröhl. & Joanne E. Taylor, Sydowia 50 (1): 27. 1998 syn. nov.

Synonym.

Arthrinium sinense (K. D. Hyde, J. Fröhl. & Joanne E. Taylor) Crous & J. Z. Groenew., in Réblová et al., IMA Fungus 7 (1): 140. 2016.

Substrate and distribution.

On dead petiole of Trachycarpus fortunei, Hubei Province, China (Hyde 1998).

Morphological description.

refer to Hyde et al. (1998).

Notes.

Apiospora sinensis was described initially from dead petiole of Trachycarpus fortunei by Hyde et al. (1998). Due to uncertainty regarding the taxonomic boundaries between Apiospora and Arthrinium, Crous and Groenewald in 2016 subsequently transferred this species to Arthrinium based on phylogenetic analysis (Réblová et al. 2016). Pintos and Alvarado (2021) clarified the generic delimitation between Apiospora and Arthrinium, and reassigned most species previously placed in Arthrinium to Apiospora. Currently, only LSU sequence data (AY 083831) is available for this species in GenBank. In our phylogenetic analyses, Ar. sinensis (HKUCC 3143) clustered within Apiospora sensu stricto and formed an independent branch distinct from other taxa. Compared to the reported morphology of this species, its asexual form, the conidia, exhibit the following characteristics: 9–12 × 6–8 μm, mainly rounded in face view, mainly lenticular, brown, with an equatorial germ slit, smooth (Hyde et al. 1998), which shares the same conidial characteristics as those reported for Apiospora (Pintos and Alvarado 2021). Therefore, Ar. sinense is reinstated in Apiospora to accommodate this taxon.