The Senecioneae are one of the largest tribes of Asteraceae, with more than 3000 species and a global distribution. They also contain a large number of invasive species such as fireweed (Senecio madagascariensis), cape ivy (Delairea odorata), and ragwort (Jacobaea vulgaris). Although sequence data are available for many species, published phylogenies are for the most part restricted to specific subgroups, and the most broadly sampled phylogenies have limited coverage in depth. Fifty‐two of 126 native Australian or introduced species remain unsequenced. As a consequence, the phylogenetic relationships of introduced and native Australian taxa remain difficult to assess, hampering research in biocontrol. We inferred ribosomal and chloroplast phylogenies of the Senecioneae incorporating all available data for the four most frequently sequenced gene regions (nrITS, nrETS, psbA‐trnH, trnL) and generated sequence data for 32 additional species to inform the assembly of biocontrol test lists. Our results indicate that nine newly sequenced species currently classified as Senecio are phylogenetically distant from that genus. Although initially unexpected, the inferred affiliations of eight of these species are also supported by morphology, biogeography and chromosome numbers, together providing strong evidence in favour of taxonomic changes. Three species are added to previously phylogenetically isolated and monotypic Lordhowea, and the new genus Scapisenecio is created to accommodate five species characterised by a rosette habit with scapose capitulescences occurring in alpine to subalpine habitats of southeastern Australia.

中文翻译：

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Lordhowea的扩展，以及一种新的属，为澳洲的千里眼的千里眼科（菊科）

千里眼科是菊科最大的部落之一，拥有超过3000种，分布全球。它们还包含大量入侵物种，例如杂草（Senecio madagascariensis），常春藤（Delairea odorata）和豚草（Jacobaea vulgaris）。）。尽管可获得许多物种的序列数据，但已发表的系统发育史大部分仅限于特定的亚组，而最广泛采样的系统发育史的深度覆盖范围有限。126个澳大利亚本土或引进物种中的52个仍未排序。结果，引进的和本地的澳大利亚分类群的系统发育关系仍然难以评估，从而妨碍了生物防治方面的研究。我们推论了千里眼科的核糖体和叶绿体系统发育，并结合了四个最常测序的基因区域（nrITS，nrETS，psbA - trnH，trnL）的所有可用数据）并生成了另外32个物种的序列数据，以告知生物控制测试列表的组装。我们的结果表明，目前分类为千里光的九个新测序物种与该属在系统发育上距离较远。尽管最初出乎意料，但其中8个物种的推断隶属关系也得到形态，生物地理和染色体数目的支持，一起为分类学变化提供了有力证据。在以前的系统发育分离和单型的Lordhowea中增加了三个物种，新的Scapisenecio属被创建来容纳五种以玫瑰花习性为特征的物种，这些花序在澳大利亚东南部的高山到亚高山生境中发生头状花序。