Cyperaceae in the campos de natureza of Cameta, Para, Amazon, Brazil

This study presents a taxonomic treatment of genera and species of Cyperaceae Juss. in the campos de natureza of Cameta, Para, Amazon, Brazil. After intense field expeditions and studies of herbarium collections, 11 genera and 51 species of Cyperaceae were identified for the area: Rhynchospora Vahl (17 species), Scleria P. J. Bergius (9), Cyperus L. (7), Eleocharis R. Br. (4), Bulbostylis Kunth (3), Lagenocarpus Nees (3), Fimbristylis Vahl (3), Calyptrocarya Nees (2), Diplacrum R. Br. (1), Fuirena Rottb. (1) and Hypolytrum Rich (1). Four species are recorded in the state of Para for the first time: Eleocharis angustispicula R. Trevis., Eleocharis jelskiana Boeck., Rhynchospora curvula Griseb., and Scleria amazonica Camelb., M. T. Strong & Goetgh. A taxonomic identification key, morphological descriptions, taxonomic comments, geographic distribution, habitat data and illustrations for all species nutlets are provided.

Automated summary

This study provides a taxonomic treatment of Cyperaceae genera and species in a specific area in the Amazon region of Brazil. 11 genera and 51 species were identified, with four species being recorded in the state of Para for the first time. The study includes a taxonomic identification key, morphological descriptions, taxonomic comments, geographic distribution, habitat data and illustrations for all species nutlets.