Pleurophragmium angamosense Matsush.

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 angamosense Matsush. , Matshushima Mycol. Mem. 8: 30. 1995.

Typus.

PERU • Colonia Angamos ; on the decayed petiole of palm; Jul 1994; T. Matsushima ( holotype MFC-4 P 738 ) .

Notes.

The species differs from the Pleurophragmium concept primarily in the morphology of its conidiogenous cells and conidia. Although the cells proliferate sympodially, the conidiogenous loci are conspicuous, appearing as distinct scars 3–3.5 µm wide. Conidia are fusiform, transversely septate, smooth, and brown, with the terminal cells noticeably paler, and with dark, thick-walled septa. The original illustration by Matsushima (1995) further suggests that conidial secession may be rhexolytic, as remnants of the outer wall appear to remain attached both to the conidiogenous locus and to the basal part of the conidium. These features clearly contrast with Pleurophragmium s. str., in which conidiogenous loci are reduced to minute denticles and conidial secession is schizolytic.