DNA sequences from the chloroplast trnL-F region of 154 Rubiaceae and 11 outgroup taxa were analyzed cladistically. An emphasis was placed on the tribes Rondeletieae, Sipaneeae, and Condamineeae. Sipaneeae are not close to Rondeletieae and belong in the Ixoroideae. There is no support for a widely distributed Rondeletieae in a broad sense. Instead, Rondeletieae sensu stricto form an almost entirely Antillean clade. Support was found for the separation of Arachnothryx, Rogiera, Roigella, and Suberanthus from Rondeletia. The Guettardeae as well as Gonzalagunia are found close to a complex formed by Arachnothryx, Javorkaea, and Rogiera. Condamineeae, in a strict sense, belongs in the Ixoroideae. A number of Rondeletieae genera should be transferred to Condamineeae or other parts of Ixoroideae. Support is found for an emended tribe Naucleeae, comprising several genera with spherical pseudanthia. For the first time, tribal or subfamilial affiliation based on molecular sequence data is suggested for Allenanthus, Blepharidium, Chione, Coutaportla, Dolichodelphys, Mazaea, Neobertiera, Neoblakea, Phialanthus, Phyllacanthus, Phyllomelia, Schmidtottia, and Suberanthus.
Rova, J. H. E. & Andersson, L. 1995. A reevaluation of the tribes Hippotideae and Tammsieae (Ruhiaceae). — Nord. J. Bot. 15: 269–284. Copenhagen. ISSN 0107–055X.
The genera Hippotis, Pentagonia, Sommera, and Tammsia, the hippotides, have recently been removed from their traditional position in the tribe Isertieae and proposed to form two separate tribes, Hippotideae (the three former genera) and Tammsieae (the latter one). In the most recent overview of the classification of the Ruhiaceae, the position of these tribes was considered uncertain. The morphology and micromorpho‐logy of representatives of all genera were reexamined and data were analysed cladisti‐cally. It is concluded that the original distinction between the Hippotideae and Tammsieae was based on faulty observations, the hippotides being uniform in ovary morphology. The cladistic analysis suggests that the hippotides form a monophyletic group, within which Tammsia is nested. It is therefore proposed that Tammsieae should he reduced to a synonym of Hippotideae. There are no indications that the hippotides should he reunited with the Isertieae. The genus Wiasemsba Klotzsch is shown to he synonymous with Tammsia, and it is argued that the genus Striolaria Ducke is synonymous with Pentagonia.
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