Supplementary information on taxonomy, nomenclature, distribution within Greece, total range, life form and ecological traits of vascular plants known to occur in Greece is presented and the revised data are quantitatively analysed. Floristic discrepancies between Vascular plants of Greece: An annotated checklist (Dimopoulos & al. 2013) and relevant influential datasets (Flora europaea, Med-Checklist, Euro+Med PlantBase, etc.) are explained and clarified. An additional quantity of synonyms and misapplied names used in previous Greek floristic literature is presented. Taxonomic and floristic novelties published after 31 October 2013 are not considered. Citation: Dimopoulos P., Raus Th., Bergmeier E., Constantinidis Th., Iatrou G., Kokkini S., Strid A. & Tzanoudakis D. 2016: Vascular plants of Greece: An annotated checklist. Supplement. — Willdenowia 46: 301–347. doi: http://dx.doi.org/10.3372/wi.46.46303 Version of record first published online on 26 October 2016 ahead of inclusion in December 20...

The eastern Mediterranean basin hosts a remarkably high plant diversity. Historical connections between currently isolated areas across the Aegean region and long-distance dispersal events have been invoked to explain current distribution patterns of species. According to most recent treatments, at least twoCymbalariaspecies occur in this area,Cymbalaria microcalyxandC. longipes. The former comprises several intraspecific taxa, treated at different ranks by different authors based on morphological data, evidencing the need of a taxonomic revision. Additionally, some populations ofC. microcalyxshow exclusive morphological characters that do not match any described taxon. Here, we aim to shed light on the systematics of eastern MediterraneanCymbalariaand to propose a classification informed by various sources of evidence. We performed molecular phylogenetic analyses using ITS, 3’ETS,ndhF andrpl32-trnL sequences and estimated the ploidy level of some taxa performing relative genome size measures. Molecular data combined with morphology support the division of traditionally delimitedC. microcalyxintoC. acutiloba,C. microcalyxandC. minor, corresponding to well-delimited nrDNA lineages. Furthermore, we propose to combineC. microcalyxsubsp.paradoxaat the species level. A group of specimens previously thought to belong toCymbalaria microcalyxconstitute a well-defined phylogenetic and morphological entity and are described here as a new species,Cymbalaria spetae.Cymbalaria longipesis non-monophyletic, but characterized by being glabrous and diploid, unlike other eastern species. The nrDNA data suggest at least two dispersals from the mainland to the Aegean Islands, potentially facilitated by marine regressions.