Conservation of rare or threatened species requires a range of information, including a sound taxonomic foundation, to ensure appropriate management. However, rare species are often known from a limited number of specimens, and that can hinder taxonomic understanding. Seringia exastia and S. katatona are two conservation‐listed taxa that were poorly known in the remote Kimberley region of northern Western Australia. Recent surveys discovered additional populations of both species but also revealed extensive morphological variation that obscured the boundary between the two species and a third, more widespread species, S. nephrosperma. We applied genomic data (>5000 SNP loci) to investigate species boundaries and hybridisation within this group. We found unequivocal evidence that S. katatona is a hybrid between S. exastia and S. nephrosperma, which is consistent with its intermediate morphology in diagnostic characters between the two highly divergent parents. Unexpectedly, we also uncovered a lack of genome‐wide differentiation and polyphyly between S. exastia and an intended outgroup taxon, S. elliptica. These results have significant taxonomic implications, for which reason we present a revised taxonomic treatment that shows S. katatona to be a nothospecies, S. ×katatona, and synonymises S. elliptica under S. exastia, the oldest effectively published name. These taxonomic revisions present new information that will enable reconsideration of the current conservation status of these taxa and inform their management in northern Western Australia.

中文翻译：

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基因组数据和形态学重新评估揭示了澳大利亚西北偏远地区的Seringia类群（Lasiopetaleae，Malvaceae）的同义和杂交

保护稀有或受威胁物种需要一系列信息，包括良好的分类基础，以确保适当的管理。但是，稀有物种通常是从数量有限的标本中得知的，这可能会阻碍分类学的理解。Seringia exastia和S. katatona是在西澳大利亚北部偏远的金伯利地区鲜为人知的两个受保护名录生物分类。最近的调查发现了这两个物种的其他种群，但同时也发现了广泛的形态变异，使两个物种与第三个更广泛分布的物种（S. nephrosperma）之间的界限变得模糊。。我们应用基因组数据（> 5000 SNP位点）来研究该物种内的物种边界和杂交。我们发现明确的证据表明，片状葡萄球菌是exastia和neperrosperma之间的杂种，这与其在两个高度不同的亲本之间的诊断特征的中间形态一致。出乎意料的是，我们还发现了链球菌埃希氏菌与拟定的外群分类群椭圆虫沙门氏菌之间缺乏全基因组分化和多谱性。这些结果具有重大的分类学意义，因此，我们提出了一种经过修订的分类学处理方法，该方法显示出片状链球菌为非特异种，即片状链球菌。和synonymises S. elliptica下S. exastia，历史最悠久的有效发表名称。这些生物分类学修订提供了新的信息，这些信息将使人们能够重新考虑这些生物分类的当前保护状况，并为西澳大利亚北部的管理提供信息。