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Revision of Andropogon and Diectomis (Poaceae: Sacchareae) in Madagascar and the new Andropogon itremoensis from the Itremo Massif

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Summary

A revision of Andropogon and Diectomis in Madagascar is presented with nine species and two subspecies (including eight native and seven endemic species) in Andropogon, and one species in Diectomis. Andropogon itremoensis from the Itremo Massif is described and illustrated. The Itremo Massif is briefly described and the conservation implications of the new species are discussed. Full typification is presented for species endemic to Madagascar and lectotypes are selected for five names. Distribution maps are presented.

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Acknowledgements

This work was generously supported by the Millennium Seed Bank Project, Royal Botanic Gardens Kew, Muséum National d'Histoire Naturelle (Paris), National Geographic Society Global Exploration Fund - Northern Europe, and the Bentham-Moxon Trust. The author would like to thank Paweł Ficinski for work with BRAHMS and maps; Lucy Smith for the beautiful drawing; Hélène Ralimanana, Franck Rakotonasolo, Roger Rajaonarison, Russell Hall, and Guillaume Besnard for assistance in the field; curators of TAN for generously providing data; Stuart Cable (K) for logistical support; Thomas Haevermans (P), Pete Phillipson (P), and Caroline Loup (P) for assistance at P; and W. D. (Derek) Clayton (K) for discussion and advice.

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Correspondence to Maria S. Vorontsova.

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Vorontsova, M.S., Ratovonirina, G. & Randriamboavonjy, T. Revision of Andropogon and Diectomis (Poaceae: Sacchareae) in Madagascar and the new Andropogon itremoensis from the Itremo Massif. Kew Bull 68, 193–207 (2013). https://doi.org/10.1007/s12225-013-9443-3

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