Pleurophragmium clavatum L. G. Ma & X. G. Zhang

Réblová, Martina, Nekvindová, Jana, Bauchová, Lucie & Hernández-Restrepo, Margarita, 2025, Pleurophragmium parvisporum (Ascomycota): One name, seven stories – a case highlighting the need for verification of strains from public culture collections, IMA Fungus 16, pp. e 173033-e 173033 : e173033-

Pleurophragmium clavatum L. G. Ma & X. G. Zhang , Mycotaxon 127: 216. 2014.

Typus.

CHINA • Yunnan Province, the Forbidden Forest of Banna ; on dead branches of Beilschmiedia percoriacea ( Lauraceae ); 31 Oct 2011; L. G. Ma ( holotype HSAUP H 2090 , isotype HMAS 243416 ) .

Notes.

Ma et al. (2014) described three morphologically similar species, P. clavatum , P. ellipsoideum , and P. yunnanense , characterised by yellowish-brown to pale brown conidia and conidiophores that often terminate in a denticulate rachis and have distinct nodulose swellings along the whole length. These swellings, however, are not typical for Pleurophragmium based on observations of species on natural substrates, where the fertile region of the conidiophore is restricted to its upper part and bears terminal and intercalary conidiogenous cells. In culture, by contrast, we frequently observed such swellings in P. parvisporum . Conidia of P. clavatum are consistently aseptate, whereas in Pleurophragmium conidia are invariably septate, with both aseptate and multi-septate forms occurring within a single species. Molecular data are therefore needed to confirm the placement of these species in the genus.