The species of the Parmelia saxatilis complex occurring in the Iberian Peninsula were revised. Eight species are accepted, including a new species found in southern Spain, described as P. rojoi A. Crespo, V. J. Rico & Divakar. The new species, which forms a sister-group relationship with P. saxatilis s. str., is rare in the Iberian Peninsula and is restricted to higher altitudes of northern and central Spain. Parmelia rojoi differs from P. saxatilis by generally narrower isidia and a more fragile thallus. The segregation of the new species is also supported by ITS (rDNA) and Mcm7 (MS456) phylogeny and multispecies coalescent-based approaches, including StarBEAST and BP&P. Furthermore, the divergence of P. rojoi is dated back to the Pleistocene, c. 2.13 Ma. A key to the identification of species from the P. saxatilis complex with their diagnostic features is provided. All species of the complex known from Europe are also found in the Iberian Peninsula. We hypothesize that P. rojoi is a relict species that survived the Pleistocene glaciations in refugia in Spain and has been unable to extend its distributional range in postglacial periods.

中文翻译：

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对伊比利亚半岛 Parmelia saxatilis 复合体物种的修订与对 P. rojoi 的描述，一种新的潜在孑遗物种

的种类石蒜对伊比利亚半岛发生的复杂情况进行了修订。八种被接受，包括在西班牙南部发现的一种新物种，被描述为P. rojoiA. Crespo、VJ Rico 和 Divakar。新物种，与P. saxatiliss。str.，在伊比利亚半岛很少见，仅限于西班牙北部和中部的高海拔地区。巴梅利亚罗乔伊不同于P. saxatilis通常更窄的isidia和更脆弱的thallus。新物种的分离也得到 ITS (rDNA) 和MCM7(MS456) 系统发育和多物种基于聚结的方法，包括 StarBEAST 和 BP&P。此外，分歧P. rojoi追溯到更新世，C. 2.13 毫安。鉴定物种的关键P. saxatilis提供了复杂的诊断功能。在伊比利亚半岛也发现了欧洲已知的所有物种。我们假设P. rojoi是一种在西班牙避难所的更新世冰川中幸存下来的孑遗物种，并且在冰后时期无法扩大其分布范围。