Resumo Estudo taxonômico do gênero Rheedia L. no Brasil. : histórico, descrição do gênero, secções e oito espécies brasileiras, chave para separação entre as mesmas, sua sinonímia, distribuição geográfica e comentários críticos. Apresenta diagnose detalhada de R. albuquerquei van den Berg, endêmica na bacia do rio Negro, recentemente publicada em nota prévia. Inclui ilustrações de todas as espécies.
Summary This paper presents a revision of the brazilian species of Rheedia L. (Guttiferae), a typical genus of the tropical American and Madagascan flora, with edible fruits, oil-containing seeds and wood having restricted uses. The remarkable variation of some morphological aspects was not fully described, and the structure of the fruit was not previously completely studied. The confusing synonymy that has subsequently developed is further discussed herein. The geographycal distribution and phenology are also studied here. Nine conclusions have drawn as a result of this research: 1. In Brazil eight valid species of Rheedia are found: R. longifolia Planchon et Triana. R. albuquerquei van den Berg. R. macrophylla (Martius) Planchon et Triana. R. gardneriana Miers ex Planchon et Triana. R. brasiliensis (Martius) Planchon et Triana. R. acuminata (Ruiz et Pavon) Planchon et Triana. R. benthamiana Planchon et Triana. R. madruno (H.B.K.) Planchon et Triana. 2. With the exception of R. benthamiana all these species have edible fruits. 3. R. benthamiana is a valid species and not a synonym of R. macrophylla. 4. R. sagotiana must be considered a synonym of R. benthamiana. 5. R. caliptrata Planchon et Triana, R. spruceana Engler, R. spruceana var. cuneata Engler, R. tenuifolia Engler, R. gardneriana var. parvifolia Engler and R. gardneriana var. glaziovii Engler must be considered synonyms of R. gardneriana. 6. R. floribunda (Miquel) Planchon et Triana, R. acuminata var. floribunda (Miquel) Vesque, R. rostrata Miers cx Vesque and R. kappleri Eyma must be considered synonyms of R. acuminata. 7. The greatest range of ocurrence in Brazil was recorded for R. gardneriana, R. brasiliensis and R. macrophylla. The latter two species share also the largest geographical distribution in the Amazonian region, but not as great as R. acuminata. 8. R. longifolia is an endemic species in the geographycal region belonging to the Purus and Madeira-Mamoré River Basins, in Brazilian Amazonia. 9. R. albuquerquei is an endemic species in the geographical region belonging to rio Negro Basin, also in Brazilian Amazonia.