Nigromargarita M. Y. Li & X. Sun, 2025

Li, Meng-Yuan, Sun, Xiang, Liu, Yu-Qing, Qin, Sheng-Hui, Li, Min & He, Xue-Li, 2025, Nigromargarita tarda gen. et sp. nov. and distribution of an intron position class within Pleosporales, IMA Fungus 16, pp. e 145425-e 145425 : e145425-

Nigromargarita M. Y. Li & X. Sun gen. nov.

Fig. 2

Type species.

Nigromargarita tarda .

Etymology.

The taxon initially forms small and pigmented colonies in culture resembling a black pearl.

Description.

Teleomorph: undetermined. Anamorph: Conidiomata pycnidial, separated in aerial hyphae, globose, brown to dark-brown, unilocular, thin-walled. Pycnidial walls multi-layered of textura angularis cells. Conidiogenous cells formed from the inner walls of the pycnidia, determinate, cylindrical to doliiform, monoblastic, hyaline. Conidia obovoid to clavate, hyaline, no septate, smooth-walled.

Figures

Figure 2. Morphological characteristics of Nigromargarita tarda in culures. A Conidiomata; B transect of conidiomata C; D conidiogenous cells; E, F verrucose hyphae; G – I conidia; H colony characteristics of Nigromargarita tarda in culture (upper: H 331 at 73 days; bottom: H 263 at 80 days; left: OA; middle: PDA; right: MEA); J oven-dried specimens of colony on PDA. Scale bars: 40 μm (A); 20 μm (B, E, F); 7 μm (C, D, G – I).