Zappi*, D.C. & Nunes, T.S. (2002). Listagem preliminar das Rubiaceae no nordeste do Brasil. / Preliminary checklist of Rubiaceae in northeastern Brazil. Kew: Royal Botanic Gardens, Kew. 50 pp.
* denotes Kew authors
Drylands Tropical America
Rubiaceae
Zappi, Daniela
