结合形态和分子数据对产自我国热带地区的新种海南丝盖伞Inocybe hainanensis进行了描述,其主要特征是子实体小、菌柄淡紫色,侧生囊状体壁稍厚,无柄生囊状体。讨论了海南丝盖伞和热带亚洲及邻近地区相似种在形态上的区别和联系。利用自测nLSU序列和下载序列对该新种及其他具厚壁侧囊体、紫色菌柄的丝盖伞之间进行了系统学分析,发现海南丝盖伞与产自南温带(澳大利亚)的I.violaceucaulis亲缘关系最近。
Inocybe hainanensis is described as a new species based on morphological and molecular data. It ischaracterized by its small basidioma, lilac stipe, slightly thick-walled pleurocystidia and the lack of caluocystidia. Thesimilarities and differences of the new species and its close relatives from tropical Asia and adjacent region werediscussed. The nLSU sequence of the holotype was generated and analyzed with available sequences of closely relatedtaxa, which indicated it has closer relationship with south temperate (Australian) species I. violaceocaulis than with othernorth temperate taxa