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Revision of Heterosavia, stat. nov., with notes on Gonatogyne and Savia (Phyllanthaceae)

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Abstract

Heterosavia (Phyllanthaceae) is segregated from Savia (tribe Bridelieae), recognized at generic rank, and placed in tribe Phyllantheae. Floral, fruit, leaf anatomical, leaf venation, and pollen characters of the neotropical taxa previously united as Savia including Gonatogyne are discussed and illustrated. Keys to the three genera and to the species of Heterosavia are presented. Four species (all new combinations), Heterosavia bahamensis, H. erythroxyloides, H. laurifolia, and H. maculata, are recognized. The new combinations Heterosavia laurifolia var. intermedia and H. maculata var. clementis are proposed. The names Heterosavia, H. erythroxyloides, H. laurifolia, Savia clementis, S. clusiifolia, S. clusiifolia var. fallax, and S. longipes are lectotypified. Distribution maps and conservation assessments (IUCN ratings) of Heterosavia species and varieties are provided.

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Acknowledgments

I gratefully acknowledge the following herbaria for granting me access to their collections: A, B, BM, CHAPA, G, GH, GOET, HAC, HAJB, HBG, JE, M, MEXU, MICH, MO, NY, P, S, US, and XAL. I thank Prof. E. Köhler (BHU) for his invaluable support, J. Ueckert (formerly BHU) for assistance for her friendship and support with photography and lab work, Dr I. Cordeiro (SP) for additional material of Gonatogyne and Savia, Prof. W. Greuter (B) and Dr. R. K. Brummitt (K) for help with nomenclatoral queries, Prof. R. D. Reeves (Massey University, New Zealand), and Prof. A. M. J. Baker (University of Melbourne, Australia) for sharing and discussing their Ni content data with me, Prof. H. H. Hilger, Dr. S. Rogaschewski, Dr. W. Wenzel, Ms Domes, Ms Grüber, Ms Ritter, and Ms Weise (all Berlin) for access to and assistance with the SEM, H. Wilks (K) for drawing Fig. 11, M. Vorontsova (K) for help with IUCN ratings, and J. Stone (K) for preparing the figures for publication. G. Levin (ILLS) and an anonymous reviewer provided valuable comments on the manuscript. Fieldwork in Cuba was conducted in collaboration with the Jardin Botanico Nacional, La Habana.

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    Petra Hoffmann

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Hoffmann, P. Revision of Heterosavia, stat. nov., with notes on Gonatogyne and Savia (Phyllanthaceae). Brittonia 60, 136–166 (2008). https://doi.org/10.1007/s12228-008-9012-5

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