| Resumo: |
We present a floristic survey of the genus Tetrapterys (Malpighiaceae) from the Brazilian Midwest, including morphological descriptions, keys, comments on taxonomy and phenology, illustrations, and distribution maps for all species. Nine species were found in the studied area: T. ambigua, T. crispa, T. discolor, T. hassleriana, T. jussieuana, T. microphylla, T. mucronata, T. racemulosa, and T. ramiflora. The distribution of species shows a collection gap mostly in northern States of Mato Grosso and southeastern Mato Grosso do Sul. Only T. ambigua and T. ramiflora were found in all federal units within the Brazilian Midwest, and three species were recorded for just one, T. hassleriana and T. racemulosa in Mato Grosso do Sul, and T. microphylla in Goiás, restricted to the Chapada dos Veadeiros.
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