Summary
Two new species are described, based on study of herbarium specimens: Cyperus bonariensis from the southern Caribbean, closely related to C. caesius, and C. stergiosii, related to C. guianensis, from Venezuela and Bolivia.
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References
Fedón Ch, I. C. (2008). Catálogo comentado del género Cyperus L. (Cyperaceae) en Venezuela. Fundación Instituto Botánico de Venezuela, Caracas.
IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission. IUCN, Gland & Cambridge.
Kükenthal, G. (1935 – 36). Cyperaceae-Scirpoideae-Cypereae. In: A. Engler (ed.), Das Pflanzenreich IV. 20 (Heft 101). Verlag von Wilhelm Engelmann, Leipzig.
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Acknowledgements
Curators of the following herbaria are thanked for access to specimens (A, GH, MO, K, NY, SP, UEC, US), and Kanchi Gandhi (GH) for nomenclatural assistance.