taxonID	type	description	language	source
E1DDB2BE8EDB53B8A9064998F73C9F76.taxon	description	Fig. 2	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
E1DDB2BE8EDB53B8A9064998F73C9F76.taxon	type_taxon	Type species. Nigromargarita tarda.	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
E1DDB2BE8EDB53B8A9064998F73C9F76.taxon	etymology	Etymology. The taxon initially forms small and pigmented colonies in culture resembling a black pearl.	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
E1DDB2BE8EDB53B8A9064998F73C9F76.taxon	description	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.	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
98B15DE758D158F0955BD70CEB218359.taxon	description	Fig. 2	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
98B15DE758D158F0955BD70CEB218359.taxon	etymology	Etymology. Epithet derives from the slow growth rate of colonies on media.	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
98B15DE758D158F0955BD70CEB218359.taxon	description	Description. Endophytic on healthy root of G. przewalskii. Teleomorph: undetermined. Anamorph: Hypha-branched, hyaline to brown, septate, thick-walled, verrucous. Conidiomata pycnidial, superficial, separated in aerial hyphae, globose, brown to dark-brown, unilocular, thin-walled, diameter 31 – 39 μm, not exceeding 50 μm. Pycnidial walls multi-layered of textura angularis cells. Conidiophore simple. Conidiogenous cells formed from the inner walls of the pycnidia, phialidic, determinate, cylindrical, straight or curved, monoblastic, hyaline, smooth, thin-walled. Conidia obovoid to clavate, hyaline, smooth, non-septate, 2.1 – 3.6 × 1.7 – 2.4 μm (x – = 2.93 × 1.95 μm, n = 20).	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
98B15DE758D158F0955BD70CEB218359.taxon	distribution	Distribution. Minqin County, Wuwei City, Gansu Province, China.	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
98B15DE758D158F0955BD70CEB218359.taxon	description	Culture characteristics. The colony diameters of H 331 colonies were 1.5 cm, 1.1 cm and 1.5 cm for OA, PDA and MEA, respectively, after 7 days of culture at 27 ° C in the dark. After 28 days, the colony diameters increased to 3.5 cm on OA, 2.6 cm on PDA and 3.4 cm on MEA, respectively. The colony on OA was superficial, circular with irregular margins, felt-like, white and brown in reverse. The colony on PDA was superficial, circular with regular margin, floccose to felt-like, greyish at the centre, brown at the margins and dark brown in reverse. The colony on MEA was submerged, brown with scarce aerial hyphae, circular in margin and brown in reverse (Fig. 2 H). The colony diameters of H 263 colonies were 1.2 cm, 0.8 cm and 1.1 cm for OA, PDA and MEA, respectively, after 7 days of culture at 27 ° C in the dark. After 28 days, the colony diameters increased to 4.0 cm on OA, 2.7 cm on PDA and 3.8 cm on MEA. The colony on OA was superficial, round, floccose to felt-like, central white, with wide concentric circles, regular dark brown margins and dark brown in reverse. The colony on PDA was superficial, circular in margin, greyish-green, velvety and dark brown in reverse, with brown pigmentation in the medium. The colony on MEA was superficial, circular at the margin, floccose to hairy, white to pale grey and light coloured in reverse (Fig. 2 H).	en	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: e 145425, DOI: 10.3897/imafungus.16.145425
