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Biodiversity and Conservation • Acta Amaz. 51 (1) • Jan-Mar 2021 • https://doi.org/10.1590/1809-4392202002542   copy

Phyllanthus chacoensis (Phyllanthaceae): new record for the Brazilian Amazon and its lectotypification

Phyllanthus chacoensis (Phyllanthaceae): novo registro para a Amazônia brasileira e sua lectotipificação

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ABSTRACT

The first record of Phyllanthus chacoensis for the Brazilian Amazon is presented, based on a specimen from Rondônia state. The species can be recognized by its cauliflorous inflorescence, staminate and pistillate flowers with 4 sepals, devoid of a floral disk, 4 stamens, 2-carpellary ovary, drupaceous, ellipsoidal fruits, with one seed per locule. The species was previously known only from the central-western and northeastern regions of the Caatinga and Pantanal domains in Brazil. We provide a list of synonyms, a detailed description, an updated geographic distribution map in Brazil, data on habitat and conservation status, illustrations of its reproductive characters, and detailed photographs. We also propose a lectotype for the species.

KEYWORDS:
Neotropics; nomenclature; northern Brazil; taxonomy

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