Andrê Laurenio de Melo

Pleradenophora bilocularis, commonly known as the arrow poison plant, is a species of shrub in the Euphorbiaceae (spurge family).

Gradyana is a genus of flowering plants in the family Euphorbiaceae. It includes a single species, Gradyana franciscana a shrub native to Alagoas and Sergipe states in northeastern Brazil. It is a monoecious subshrub to shrub growing 0.8 to 3 m tall, branched with glabrous leaves, and white latex in young stems. It is known from 10 populations in the Xingó region of the São Francisco River valley in Alagoas and Sergipe. It grows in riparian forest along the lower São Francisco river from 20 to 30 meters elevation, in rocky areas with bushy and sparse vegetation with Chresta martii, Cyperus

Gradyana is a genus of flowering plants in the family Euphorbiaceae. It includes a single species, Gradyana franciscana a shrub native to Alagoas and Sergipe states in northeastern Brazil. It is a monoecious subshrub to shrub growing 0.8 to 3 m tall, branched with glabrous leaves, and white latex in young stems. It is known from 10 populations in the Xingó region of the São Francisco River valley in Alagoas and Sergipe. It grows in riparian forest along the lower São Francisco river from 20 to 30 meters elevation, in rocky areas with bushy and sparse vegetation with Chresta martii, Cyperus

Sebastiania integra is a species of flowering plant in the family Euphorbiaceae. It was originally described as Gymnanthes integra Fawc. & Rendle in 1920. It is native to Jamaica.

Pleradenophora membranifolia is a species of plant in the family Euphorbiaceae. It ranges from Peru to central Brazil. Sebastiania huallagensis Croizat is treated as a synonym of P. membranifolia in Kew's Plants of the World Online database. The former, listed as endemic to Peru, was assessed as vulnerable on the IUCN Red List.

Chicomendes is a genus of flowering plant in the family Euphorbiaceae. Its only species is Chicomendes rubiginosus. It is a monoecious vine with reddish-brown stems. It is endemic to Peru where it is known from a single population in lowland Amazonian rainforest near Loreto. There may be a second population in the adjacent Brazilian Amazon. The species was first named Tragia rubiginosa in 1989. It was placed in the monotypic genus Chicomendes in 2021. The genus is named for Brazilian Amazonian environmentalist Chico Mendes, who was murdered in 1988.

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