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The genus Borassus (Arecaceae) in West Africa, with a description of a new species from Burkina Faso

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Borassus akeassii Bayton, Ouédraogo & Guinko sp. nov. (Arecaceae) is described as a new species from western Burkina Faso in West Africa. It has been confused with the widely distributed African species B. aethiopum and more recently with the Asian B. flabellifer. However, it is distinguished by its glaucous, green leaves with weakly armed petioles and a characteristic pattern of lamina venation. The fruits have a pointed apex and are greenish when ripe, and the flowers of the pistillate inflorescence are arranged in three spirals. The pollen has a reticulate tectum and distinctive ornamentation. The distribution of B. akeassii is discussed and the status of the varieties of Borassus aethiopum (var. bagamojensis and var. senegalensis) is examined. © 2006 The Linnean Society of London, Botanical Journal of the Linnean Society, 2006, 150, 419–427.
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Keywords: Borasseae; Coryphoideae; palm; pollen

Document Type: Research Article

Affiliations: Laboratoire de Biologie et Ecologie Végétales, Université de Ouagadougou, 03 B.P. 7021, Ouagadougou 03, Burkina Faso

Publication date: 01 April 2006

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