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  • 1.
    Lantz, Henrik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolution, Genomics and Systematics, Systematic Botany.
    Klackenberg, Jens
    Razafimandimbison, Sylvain
    Mouly, Arnaud
    Three new species of Vanguerieae (Rubiaceae) from Madagascar2007In: Adansonia, ISSN 1280-8571, E-ISSN 1639-4798, Vol. 29, no 1, p. 129-136Article in journal (Refereed)
    Abstract [en]

    Three new species of the tribe Vanguerieae (Rubiaceae) from Madagascar aredescribed with illustrations. Two species are placed in Pyrostria, one in Peponi-dium. Peponidium crassifolium is recognized by its thick and slightly succulentleaves, Pyrostria pendula by the pendulous flowers and persistent pedicels, andPyrostria serpentina by a serpentine habit and small leaves. The morphology andtaxonomic history of the dioecious genera of the tribe are discussed.

  • 2.
    Stone, Robert Douglas
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolution, Genomics and Systematics, Systematic Botany.
    New species of Memecylon L. and Warneckea Gilg (Melastomataceae) from Madagascar and Mayotte2006In: Adansonia, ISSN 1280-8571, E-ISSN 1639-4798, Vol. 28, no 2, p. 337-358Article in journal (Refereed)
    Abstract [en]

    Eight new species of Memecylon L. are described and illustrated from Madagascar (M. acrogenum, M. sejunctum, M. pterocladum, M. xiphophyllum, M. perditum, M. impressivenum, M. interjectum, M. amplifolium) together with one new species of Warneckea Gilg (W. masoalae). Also described is Memecylon mayottense, a new species from Mayotte (Comoro islands).

  • 3.
    Thulin, Mats
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
    Phillipson, Peter B.
    Lavin, Matt
    Peltiera (Fabaceae), the coming and going of an "extinct" genus in Madagascar2013In: Adansonia, ISSN 1280-8571, E-ISSN 1639-4798, Vol. 35, no 1, p. 61-71Article in journal (Refereed)
    Abstract [en]

    Peltiera Du Puy & Labat is a Malagasy genus of two described species thought probably to be extinct at the time of its publication in 1997, when it was known only from a total of three pre-1950 collections. However, recent field work in east-central Madagascar has resulted in the discovery of still extant populations, and therefore it is now possible to reconsider the phylogenetic position and status of the genus and its two species. Phylogenetic analyses based on molecular (chloroplast trnK and nuclear ribosomal ITS sequences) and morphological data corroborate the close relationship between Peltiera and Ormocarpopsis R. Vig., a genus of six species, also endemic to Madagascar. Peltiera differs from Ormocarpopsis mainly by having articulated, dehiscent fruits, and the two genera together are, in turn, sister to the widespread but mainly African Ormocazpum P. Beauv. Morphological, distributional and habitat data gathered from the new collections show that only a single species of Peltiera can be recognized, and as this species shares important synapomorphies with all species of Ormocarpopsis, it is transferred to this genus as O. nitida, comb. nov. A distribution map and photographs of O. nitida comb. nov. are presented, and a conservation threat analysis of the species is provided. The name Ormocarpopsis is lectotypified and an amended description of the genus with its new circumscription is given.

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