Open-access Flora of Rio de Janeiro: Dilleniaceae

Dilleniaceae comprises 11 genera and approximately 650 species. It is currently subdivided into four subfamilies, and only Delimoideae and Doliocarpoideae have species distributed in the Neotropics, including Brazil and Rio de Janeiro. Six genera occur in Brazil, Curatella, Davilla, Doliocarpus, Neodillenia and Pinzona circumscribed in Doliocarpoideae, and Tetracera representing Delimoideae. According to the latest Brazilian list published, only three threatened species of Dilleniaceae are recognized at the national level, among them is Davilla glaziovii, a species classified as Endangered (EN), endemic to Rio de Janeiro, and the only one occurring exclusively within the limits of the state. With the aim of surveying the Dilleniaceae in the state of Rio de Janeiro, we made field collections in sites of known occurrence of the species, and studied collections in herbaria in person or through online consultations. The occurrence of 16 species of Dilleniaceae was confirmed for the state of Rio de Janeiro. The most species-rich genera are Davilla and Doliocarpus, with six species each, followed by Tetracera, with four species. In addition to Davilla glaziovii, Doliocarpus sessiliflorus and Doliocarpus littoralis are confirmed as endemic to the state of Rio de Janeiro and six other species are classified as threatened.

Key words:
floristics; Davilla glaziovii ; Doliocarpus ; Neotropics; Tetracera

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Instituto de Pesquisas Jardim Botânico do Rio de Janeiro Rua Pacheco Leão, 915 - Jardim Botânico, 22460-030 Rio de Janeiro, RJ, Brasil, Tel.: (55 21)3204-2148, Fax: (55 21) 3204-2071 - Rio de Janeiro - RJ - Brazil
E-mail: rodriguesia@jbrj.gov.br
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