Taxonomic revision of Ceropegia sect. Huernia (Asclepiadoideae, Apocynaceae) in Saudi Arabia with three new combinations

This study provides a taxonomic revision for Ceropegia sect. Huernia in the flora of Saudi Arabia. Forty-six quantitative and qualitative morphological characters were analysed using principal component analysis (PCA), coordinates (PCoA) unweighted pairs group mean average (UPGMA) to separate help delimit taxa. We propose reduce number species reported Arabia from 11 four: C. khalidbinsultanii comb. nov. , laevis lodarensis macrocarpa . also suggested reducing two names varietal level under (var. foetida var. rubrosticta ). A key species, detailed descriptions, illustrations, distribution maps, ecology, etymology preliminary conservation assessments are provided that follow IUCN criteria.