![]() ![]() International Journal of Plant Sciences 181: 306-323. Molecular phylogenetics of Ligusticum (Apiaceae) based on nrDNA ITS sequences: rampant polyphyly, placement of the Chinese endemic species, and a much-reduced circumscription of the genus. Journal of Systematics and Evolution, in press. A systematic study of North American Angelica species (Apiaceae) based on nrDNA ITS and cpDNA sequences and fruit morphology. Systematics and Biodiversity 19(1): 89-109. An updated lineage-based tribal classification of Apiaceae subfamily Apioideae with special focus on the Iranian genera. ![]() Resolving species boundaries in a recent radiation with the Angiosperms353 probe set: the Lomatium packardiae/L. A higher-level nuclear phylogenomic study of the carrot family (Apiaceae). Nordic Journal of Botany, in press.Ĭlarkson, J. The chloroplast genomes of Sanicula (Apiaceae): plastome structure, comparative analyses, and phylogenetic relationships. ![]() Ongoing research on the phylogeny and biogeography of Apiaceae, using techniques ranging from herbarium-based studies to phylogenomic analyses, is international in scope, with extensive collaborations the world over. Current research is focused on the perennial, endemic umbellifers of western North America, such as Cymopterus and Lomatium, with the goals of clarifying generic- and species-level boundaries, reconstructing a robust phylogeny, and producing a modern classification. We are using the record of molecular change contained within the chloroplast and nuclear genomes of plants, as well as morphological and fruit anatomical evidence, to trace evolutionary histories and elucidate patterns of phenotypic character evolution in the Apiaceae (or Umbelliferae, the carrot, celery or parsley family), a cosmopolitan group of ecological, economical, and pharmaceutical importance. Reconstruction of phylogenies from molecular data is now routine in systematics and continues to provide valuable insight into evolutionary patterns and processes, and historical biogeography. The relationships among and within many families of flowering plants remain unclear. ![]()
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