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ARS Home » Northeast Area » Washington, D.C. » National Arboretum » Floral and Nursery Plants Research » Research » Publications at this Location » Publication #283322
Title: A new variety of Declieuxia cucuminis (Rubiaceae) from the state of Tocantins, Brazil, and a review of the varieties recognized in the species

Author
item Kirkbride, Joseph
item DELPRETE, PIERO - Centro De Cooperation Internationale En Recherche Agronomique Pour Le Development (CIRAD)

Submitted to: Journal of Botanical Research Institute of Texas
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/1/2012
Publication Date: 11/23/2012
Citation: Kirkbride, J.H., Delprete, P.G. 2012. A new variety of Declieuxia cucuminis (Rubiaceae) from the state of Tocantins, Brazil, and a review of the varieties recognized in the species. Journal of Botanical Research Institute of Texas. 6(2):391-396.

Interpretive Summary: A rare variety of de Clieu’s madder in the coffee family was recently discovered in the Brazilian state of Tocantins. Comparison of the plant to the recent floristic treatment of the coffee family for the Brazilian states of Goias and Tocantins and the known Brazilian species of the genus established that it belongs to the high-elevation madder of de Clieu and is new to science. It is described, and its distribution relative to the other three varieties of de Clieu’s high-elevation madder is discussed.

Technical Abstract: A new variety of Declieuxia cacuminis Müll. Arg. is described and illustrated, D. cacuminis var. tocantinensis Delprete & J.H. Kirkbr. The new variety is endemic to the Brazilian state of Tocantins, and has been reported from cerrado vegetation in the southeastern corner of the state.