@ARTICLE{TreeBASE2Ref18491, author = {Jaromir Kucera and Karol Marhold and Judita Lihova}, title = {Cardamine maritima group (Brassicaceae) in the amphi-Adriatic area: a hotspot of species diversity revealed by DNA sequences and morphological variation.}, year = {2010}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Taxon}, volume = {59}, number = {1}, pages = {148--164}, abstract = {The western Balkans, characterized by high rates of endemism, are recognized as one of the most diverse and species-rich areas of Europe. The present study focuses on diploid speciation in a poorly explored ancestral group of the genus Cardamine that is distributed in the amphi-Adriatic territory. Morphological data and DNA sequences (plastid trnL intron and trnL-trnF spacer, ITS of nrDNA, and single-copy nuclear gene CHS) were used to address taxonomic, phylogenetic and evolutionary questions. Recognition of several previously described, but recently not accepted narrow endemics is supported (C. fialae, C. rupestris, C. serbica). C. maritima s.str. is segregated into three distinct entities, giving them a species rank. A new taxonomic concept of the group is proposed, including detailed chorological survey, identification key and nomenclatural accounts with synonymy, typifications, description of the new species C. montenegrina, and publication of C. adriatica, nomen novum. Chloroplast data indicate initial radiation of the ancestral lineage into a series of distinct endemic species; the lack of resolution at internal nodes and incongruence with nuclear phylogenies suggest that this occurred rapidly. Nuclear data, in turn, partly show geographic structuring within the core of the studied group, indicating more recent hybridization events. It is assumed that glacial-induced local-scale and altitudinal migrations along the Balkan coastline and in adjacent massifs caused contacts between previously isolated populations, resulting in occasional interspecific gene-flow. Trans-Adriatic contacts and gene exchange are suggested as well.} }

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