Typification and taxonomic characterization of Thymus longicaulis C. Presl (Lamiaceae)

Thymus longicaulis, described from Sicily by Carl Bo\u159ivoj Presl, is a critical Mediterranean species, often confused with other taxa belonging to Th. sect. Serpyllum. In order to preserve the current application of this name, a lecotype is designated. Furthermore a detailed morphological description and information about habitat, phenology, distribution, karyology and taxonomy are provided