Data from: A note on phytogeography of the flora of Genu and Homag; two mountains with an Irano-Turanian entity in the Saharo-Sindian regional zone, S Iran

The Saharo-Sindian regional zone encompasses the flat and arid areas of North Africa, the Arabian Peninsula, southern Iran and the deserts of Pakistan and W India. There are some scattered mountains situated within this area like Hoggar in Sahara, Saint Catherine in Sinai and Genu and Homag in southern Iran. These highlands serve as interglacial refugia for cold adapted plant species. In the present study, phytogeographical patterns and relationships of the flora of Genu and Homag mountains are assessed and discussed in comparison to the phytogegraphy of the flora of low-lying Hormoz Island. According to chorological assesments of the flora, Genu and Homag mountains belong to theIrano-Turanian region with 59% of the species restricted to this area. However the surrounding lowland plains are part of the Saharo-Sindian area with a rather high proportion of the widespread species (17%) and Somalia-Masai linking elements (20%). It is noteworthy that several Turanian enclaves also occur in the lowland zone. Furthermore, the distributional evidences imply that the mountainous Irano-Turkestanian region is an integrated area which is supposedly distinct from the Turanian lowland areas in the North and the Saharo-Sindian lowland areas in the South. On the other hand, the expansive floras of Turanian and Saharo-Sindian regions are linked to each other. Endemic species in lowland areas in S Iran are mostly either frost sensitive vicariants of cold adapted Turanian species or of Saharo-Sindian origins, while the highland endemics in the area trace their origins to the Irano-turkestanian region.

撒哈拉-信德区域带（Saharo-Sindian regional zone）涵盖北非、阿拉伯半岛、伊朗南部以及巴基斯坦与西印度的荒漠干旱区域。该区域内散布有多处山地，例如撒哈拉的霍加尔山（Hoggar）、西奈半岛的圣凯瑟琳山（Saint Catherine）以及伊朗南部的杰努山（Genu）与霍马格山（Homag）。这些高地是耐寒植物物种的冰间期避难所（interglacial refugia）。
本研究针对杰努山与霍马格山植物区系的植物地理格局（phytogeographical patterns）及其类群关系展开评估与讨论，并与低洼的霍尔木兹岛（Hormoz Island）植物区系的植物地理学（phytogeography）特征进行对比。基于植物区系分布区类型分析，杰努山与霍马格山隶属于伊朗-图兰区域（Irano-Turanian region），该区域内59%的物种为该区域特有种。
但其周边的低地平原属于撒哈拉-信德区域，该区域内广布种占比达17%，且包含20%的索马里-马赛过渡区系成分（Somalia-Masai linking elements）。值得注意的是，低地区域内亦存在多处图兰区域飞地（Turanian enclaves）。
此外，分布证据显示，山地伊朗-突厥斯坦区域（Irano-Turkestanian region）为一个独立的整体，与北部的图兰低地及南部的撒哈拉-信德低地均存在显著差异。另一方面，图兰区域与撒哈拉-信德区域的广袤植物区系之间存在相互关联。
伊朗南部低地的特有物种，大多为耐寒图兰物种的霜冻敏感替代种（frost sensitive vicariants），或是起源于撒哈拉-信德区域；而该区域内的高地特有种，其起源可追溯至伊朗-突厥斯坦区域。