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New species of Marasmius exhibit distinct morphological traits and contribute to our understanding of fungal diversity in China, emphasizing their ecological significance.
Marasmius is a large and important genus in the forest, with potential research and application value, while its diversity in China remains under-documented. In this work, three new species of Marasmius belonging to subgen. Globulares were studied from southwestern China. Morphologically, Marasmius flavosulcatus is characterized by the lemon-yellow, plicated pileus and large basidiospores. Marasmius griseobrunneus is characterized by a white to grayish brown, faintly striate pileus, a stipe tapering towards the base, subdistant lamellae, medium-sized basidiospores (7.06 × 3.91 μm), and clavate caulocystidia. Marasmius variegatus is characterized by a yellowish, spotted pileus and dimorphic cells in both the cheilocystidia and the pileipellis. Based on ITS and LSU phylogenetic analyses, the three species belong to the purpureostriatus , wynneae and luteoli series, respectively. In this study, descriptions, photographs of the basidiomata, line drawings, phylogenetic analysis results and comparisons with related species are provided.
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Deng et al. (2026) studied this question.
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