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<p>Two novel species from Jiangxi Province, Eastern China, <i>Russula bubalinoides</i> and <i>R. patella</i>, are described and illustrated in this study. <i>Russula bubalinoides</i> is morphologically characterized by its striate pileus margin with lamellulae and furcations, a white stipe, and basidiospores ornamented with mostly isolated warts and spines that do not form a complete reticulum. Additionally, it exhibits wide hymenial cystidia (6.5–15&#xa0;µm) showing no reaction in sulfovanillin and is typically found in <i>Fagaceae</i> forests. <i>Russula patella</i> is characterized by a glabrous pileus surface, the absence of lamellulae and furcations, basidiospores featuring an inamyloid suprahilar spot and reticulate surface ornamentation, wide hymenial cystidia (5.5–15.5&#xa0;µm), and pileocystidia consistently bearing mastoid appendages. This species also inhabits <i>Fagaceae</i> forests. Phylogenetic analyses based on the ITS-ncLSU-mtSSU-<i>RPB1</i>-<i>RPB2</i>-<i>EF</i>-<i>α</i> dataset revealed that <i>R. bubalinoides</i> belongs to subsect. <i>Heterophyllae</i>, while <i>R. patella</i> is classified under subsect. <i>Virescentinae</i>.</p>

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Two new species of Russula sect. Heterophyllae (Russulaceae, Russulales) from Jiangxi Province, Eastern China

  • 期刊论文

  • 发表日期：

    2025年7月4日

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  • Lin-Ping Zhang,
  • Li-Hui-Dong Zhao,
  • Xin-Gui Le,
  • Zhen-Wei Mao,
  • Shao-Hua Huang

摘要

Two novel species from Jiangxi Province, Eastern China, Russula bubalinoides and R. patella, are described and illustrated in this study. Russula bubalinoides is morphologically characterized by its striate pileus margin with lamellulae and furcations, a white stipe, and basidiospores ornamented with mostly isolated warts and spines that do not form a complete reticulum. Additionally, it exhibits wide hymenial cystidia (6.5–15 µm) showing no reaction in sulfovanillin and is typically found in Fagaceae forests. Russula patella is characterized by a glabrous pileus surface, the absence of lamellulae and furcations, basidiospores featuring an inamyloid suprahilar spot and reticulate surface ornamentation, wide hymenial cystidia (5.5–15.5 µm), and pileocystidia consistently bearing mastoid appendages. This species also inhabits Fagaceae forests. Phylogenetic analyses based on the ITS-ncLSU-mtSSU-RPB1-RPB2-EF-α dataset revealed that R. bubalinoides belongs to subsect. Heterophyllae, while R. patella is classified under subsect. Virescentinae.