Taxonomic monographs have the potential to make a unique contribution to the understanding of global biodiversity. However, such studies, now rare, are often considered too daunting to undertake within a realistic time frame, especially as the world's collections have doubled in size in recent times. Here, we report a global-scale monographic study of morning glories (Ipomoea) that integrated DNA barcodes and high-throughput sequencing with the morphological study of herbarium specimens. Our approach overhauled the taxonomy of this megadiverse group, described 63 new species and uncovered significant increases in net diversification rates comparable to the most iconic evolutionary radiations in the plant kingdom. Finally, we show that more than 60 species of Ipomoea, including sweet potato, independently evolved storage roots in pre-human times, indicating that the storage root is not solely a product of human domestication but a trait that predisposed the species for cultivation. This study demonstrates how the world's natural history collections can contribute to global challenges in the Anthropocene.

中文翻译：

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跨系统发育尺度整合的五爪属分类学专着。

分类学专着有可能为理解全球生物多样性做出独特的贡献。然而，此类研究现在很少见，通常被认为过于艰巨，无法在现实的时间范围内进行，特别是在最近世界收藏规模翻了一番的情况下。在这里，我们报告了一项全球范围的牵牛花 (Ipomoea) 专题研究，该研究将 DNA 条形码和高通量测序与植物标本的形态学研究相结合。我们的方法彻底修改了这个巨大多样性群体的分类法，描述了 63 个新物种，并发现净多样化率显着增加，可与植物界最具标志性的进化辐射相媲美。最后，我们发现包括甘薯在内的 60 多种甘薯在前人类时代独立进化出了贮藏根，这表明贮藏根不仅是人类驯化的产物，而且是该物种易于栽培的特征。这项研究展示了世界自然历史收藏如何为人类世的全球挑战做出贡献。