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A treatment of the African genus Schistostephium (Compositae: Anthemideae)

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Summary

The African genus Schistostephium Less. (Compositae: Anthemideae) is revised; eight species are recognised. A key to the species is provided, together with descriptions and illustrations. Conservation assessments have been carried out for each species. Six names are lectotypified: Tanacetum crataegifolium DC., Schistostephium saxicola Hutch. and Schistostephium villosum Hutch. (here all regarded as synonyms of Schistostephium crataegifolium (DC.) Fenzl ex Harv.), Schistostephium dactyliferum Hutch. (treated here as a synonym of Schistostephium heptalobum Oliv. & Hiern), Tanacetum argyraeum DC. (treated here as a synonym of Schistostephium flabelliforme Less.) and Schistostephium oxylobum S. Moore.

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Notes

  1. For brevity in this key a distribution indication of ‘South Africa’ refers to South Africa and Swaziland.

  2. Collection numbers and other specimen information cited in square brackets have been obtained from specimens and the G-DC microfiche. Current country names have been inserted for ease of use.

  3. I have not been able to discover the location of three syntypes of Schistotephium saxicola Hutch.: Conrath 402, Rehmann 6082 and Medley Wood 475.

  4. The author has not been able to find out any further information regarding this type specimen.

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Acknowledgements

I am grateful to Dr Nicholas Hind for his guidance and help in understanding the plant characters and the literature. I am grateful to Dr David Goyder for his help with understanding the literature and its taxonomic implications. I would also like to thank Margaret Tebbs for preparing the illustrations.

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  1. Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK

    T. Harris

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Harris, T. A treatment of the African genus Schistostephium (Compositae: Anthemideae). Kew Bull 68, 107–120 (2013). https://doi.org/10.1007/s12225-012-9424-y

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