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A synoptic revision of Inversodicraea (Podostemaceae) Naturalis
Cheek, M.; Feika, A.; Lebbie, A.; Goyder, D.; Tchiengue, B.; Sene, O.; Tchouto, P.; Burgt, X. van der.
Six new species of Inversodicraea (I. feika from Sierra Leone, I. liberia from Liberia, and I. ebo, I. eladii, I. tchoutoi, and I. xanderi from Cameroon) are described as new to science in the context of a synoptic revision of this African genus, now comprising 30 species, including I. cussetiana comb. nov., newly transferred from Macropodiella. Inversodicraea is now equal in number of species to Ledermanniella (as redefined), as the largest genus of the family in Africa. Terete or slightly dorsiventrally flattened leaf petioles (not sheathing and/or stipulate) are newly discovered to distinguish the genus from Ledermanniella, in addition to the presence of scale-leaves. Inversodicraea boumiensis, I. annithomae, and I. bosii are redelimited in this paper....
Tipo: Article / Letter to the editor Palavras-chave: Conservation; Extinction risk; Hybridisation; Hydroelectric dam projects; Rheophytes; Stage-dependent heteromorphy.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/636690
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Ternstroemia cameroonensis (Ternstroemiaceae), a new medicinally important species of montane tree, nearly extinct in the Highlands of Cameroon Naturalis
Cheek, M.; Tchiengue, B.; Tacham, W.N..
Ternstroemia cameroonensis sp. nov. (Ternstroemiaceae) is formally described from the Highlands of Cameroon and its conservation status is assessed as Critically Endangered using the IUCN 2012 standard. This is the third species of Ternstroemia known from Africa. The species is unusual in its genus in being monoecious, having Terminalia-branching (Aubreville’s model), phyllotaxy of 1/3 (not pseudo-verticillate), flowers with a uniseriate androecium and a distinct intra-staminal disc, and in the stamens lacking a distinct apicular connective. The species is used locally for extensive medicinal purposes.
Tipo: Article / Letter to the editor Palavras-chave: Cloud Forest; Critically Endangered; Medicinal plant; Pentaphylacaceae; Theaceae.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/626072
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