Molecular Biology and Genetics
Statistics of barcoding coverage
Specimens with Sequences:450
Specimens with Barcodes:255
Species With Barcodes:143
Earlier treatments of the family have included up to 29 genera. Phylogenetic studies have demonstrated that this broadly defined Loganiaceae was a polyphyletic assemblage, and numerous genera have been removed from Loganiaceae to other families (sometimes in other orders), e.g., Gentianaceae, Gelsemiaceae, Plocospermataceae, Tetrachondraceae, Buddlejaceae, and Gesneriaceae. Some classification schemes, notably Takhtajan's, break the remaining Loganiaceae even further, into as many as four families; Strychnaceae, Antoniaceae, Spigeliaceae and Loganiaceae. Recent DNA studies of the Gentianales have found strong support for the Loganiaceae (as defined here) as a clade containing 13 genera.
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- "Family: Loganiaceae R. Br. ex Mart., nom. cons.". Germplasm Resources Information Network. United States Department of Agriculture. 2003-01-17. Retrieved 2010-12-15.
- Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III" (PDF). Botanical Journal of the Linnean Society 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Retrieved 2013-07-06.
- "GRIN Genera Records of Loganiaceae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-12-15.
- Maria Backlund, Bengt Oxelman and Birgitta Bremer, Phylogenetic relationships within the Gentianales based on NDHF and RBCL sequences, with particular reference to the Loganiaceae, American Journal of Botany. 2000;87:1029-1043.
- "GRIN genera sometimes placed in Loganiaceae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-12-15.
- Struwe, L., V. A. Albert, and B. Bremer 1994. Cladistics and family level classification of the Gentianales. Cladistics 10: 175–205.
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