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H. FREITAG
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Morphologie u. Systematik der Pflanzen, Fachbereich Biologie/Chemie Universität Kassel, Heinrich Plett-Str. 40, D-34132 Kassel, Germany.
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I.C. HEDGE
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Royal Botanic Garden, Edinburgh EH3 5LR, U.K.
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S.M.H. JAFRI
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Department of Botany, University of Karachi, Karachi-75270, Pakistan.
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G. KOTHE-HEINRICH
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Südring 23, 64846 Groß-Zimmern, Germany.
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S. OMER
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Canadian Museum of Nature, Research Division, 1740 Pink Road, Aylmer, Quebec J9H 5E1, Canada.
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P. UOTILA
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Botanical Museum, Finnish Museum of Natural History, FIN-00014 Helsinki, Finland.
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