Abstract
In Northwest Africa (Morocco), Carum (Apiaceae/Umbelliferae) is represented by six little known species. In order to clarify the relationships of these species within Carum, we conducted detailed morphological studies and molecular sequence analysis of four species (C. atlanticum, C. jahandiezii, C. lacuum and C. proliferum) based on the nuclear DNA internal transcribed spacer (ITS) and plastid rps16 intron (rps16) regions. According to the molecular data, the Moroccan Carum species form three isolated evolutionary lines distant from that of the generitype C. carvi. The morphological study demonstrated that fruits of C. atlanticum belong to a carpological type markedly different from that of other Carum species. Based on the correlation of obtained carpological and molecular data, we propose to transfer C. atlanticum to the new monotypic genus Berberocarum, endemic to the High Atlas Mountains.
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