A new species of Heliosperma (Caryophyllaceae) from Serbia and Montenegro

Heliosperma oliverae Niketic & Stevanovic is described from Mt. Prokletije in south-west Serbia and north-east Montenegro, together with an estimation of its ecological preferences and International Union for Conservation of Nature and Natural Resources (IUCN) threat status. A map and illustration are provided. It is compared with seven closely related Balkan endemic taxa: H. macranthum Pancic, H. retzdorffianum K. Maly, H. tommasinii Vis., H. insulare Trinajstic, H. chromodontum (Boiss. & Reuter) Juratzka, H. intonsum (Greuter & Melzh.) Niketic & Stevanovic, and H. nikolicii (Seliger & T. Wraber) Niketic & Stevanovic. An amended key to species and a table showing differences from the related Balkan taxa are also provided. (C) 2007 The Linnean Society of London.