Data from: Molecular analyses reveal semi-cryptic species in Xanthoparmelia tasmanica

Evolutionary relationships between the major populations of Xanthoparmelia tasmanica are investigated using parsimony, likelihood, and Bayesian analyses of ITS sequence data. Results indicate that this taxon is comprised of at least two geographically distinct lineages. Moreover, these lineages belong to two larger clades of Xanthoparmelia s. str. (also defined by geography) that were recognized in previous phylogenetic studies of the genus. The geographically distinct, but morphologically and chemically identical populations of X. tasmanica are treated here as separate taxa with independent evolutionary histories. While the name X. tasmanica is properly applied to Australasian populations, populations from North America that were previously called X. tasmanica are here referred to X. hypofusca.本研究基于内转录间隔区（Internal Transcribed Spacer, ITS）序列数据的简约法、最大似然法及贝叶斯分析，对塔斯曼尼亚黄梅（Xanthoparmelia tasmanica）主要种群间的演化关系展开探究。研究结果显示，该分类单元至少包含两个地理分化的演化支系。此外，这些支系隶属于黄梅属（Xanthoparmelia）狭义类群（s. str.，以地理范围界定）的两个更大演化支，该类群已在该属过往的系统发育研究中被确立。本研究将地理分化但形态与化学特征一致的X. tasmanica种群视为具有独立演化历史的独立分类单元。尽管X. tasmanica这一学名的合法适用范围为澳大拉西亚种群，但此前被归类为X. tasmanica的北美种群，本次研究将其重新归为X. hypofusca。