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<p>Current number of species of <i>Ornithogalum</i> s. lat. in Slovakia is eight. We here report the discovery of a ninth species, <i>Ornithogalum refractum</i> Kit. ex. Willd. The species was first discovered in the vicinity of Štúrovo town in southern Slovakia in April 2023. We used a multi-method biosystematic approach to demonstrate its difference from morphologically similar species <i>O. divergens</i> Boreau. Flow cytometry and chromosome counting revealed that pentaploids and hexaploids of <i>O. refractum</i> occur in Slovakia. Its residence time in Slovakia is unclear, but we suggest that it is not of a recent origin, and the species occurrence has been overlooked due to its superficial similarity with <i>O. divergens</i>. The species occurrence in southern Slovakia represents a continuation of its distribution in northern Hungary and it is probably the northernmost in the entire range.</p>

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The Danube is not a border for geophytes: Ornithogalum refractum (Asparagaceae) discovered in Slovakia

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  • 发表日期：

    2026年3月9日

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  • Michal Hroneš,
  • Alena Uvírová

摘要

Current number of species of Ornithogalum s. lat. in Slovakia is eight. We here report the discovery of a ninth species, Ornithogalum refractum Kit. ex. Willd. The species was first discovered in the vicinity of Štúrovo town in southern Slovakia in April 2023. We used a multi-method biosystematic approach to demonstrate its difference from morphologically similar species O. divergens Boreau. Flow cytometry and chromosome counting revealed that pentaploids and hexaploids of O. refractum occur in Slovakia. Its residence time in Slovakia is unclear, but we suggest that it is not of a recent origin, and the species occurrence has been overlooked due to its superficial similarity with O. divergens. The species occurrence in southern Slovakia represents a continuation of its distribution in northern Hungary and it is probably the northernmost in the entire range.