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Two new coffee relatives (tribe Coffeeae, Rubiaceae), discovered during botanical expeditions to Cameroon, are examined for… Expand The placement of Psilanthus into the synonymy of Coffea necessitates nomenclatural changes. Five new combinations and two new… Expand The tribe Alberteae, presently classified in the subfamily Ixoroideae (Rubiaceae), has historically been an artificial grouping… Expand Abstract Rubiaceae is one of the five largest families of flowering plants with over 13,000 species. We have seen a tremendous… Expand The circumscription of Coffeeae (Rubiaceae) and phylogenetic relationships within the tribe were evaluated using sequence data… Expand Une nouvelle espece de Coffea (Rubiaceae) du Cameroun, Coffea fotsoana Stoffelen & Sonke, est decrite et illustree ici. Une carte… Expand Recent insight in the phylogeny of the Rubiaceae, mainly based on macromolecular data, agrees better with wood anatomical… Expand Parsimony analyses of morphology, restriction sites of the cpDNA, sequences from the nuclear, ribosomal internal transcribed… Expand Orbicules were studied in 43 species belonging to 32 genera of the five tribes of the Ixoroideae (Rubiaceae). The orbicules were… Expand The Hypobathreae is a new tribe of Rubiaceae split from the Gardenieae sensu lato. The latter tribe is shown to remain… Expand