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    Author(s): Paul E. Berry; Ines Cordeiro; Alex C. Wiedenhoeft; Maria Amelia Vitorino-Cruz; Leticia Ribes de Lima
    Date: 2005
    Source: Systematic botany. Vol. 30, no. 2 (2005): p. 357-365.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (648 KB)

    Description

    A new genus and species of Euphorbiaceae s.s., Brasiliocroton mamoninha, is described from two disjunct areas of lowland forest remnants in eastern and northeastern Brazil. It is a member of tribe Crotoneae and was previously confused with Croton and Micrandra. The resemblance to Micrandra is based on the branched inflorescences and terminal position of the pistillate flowers, trigonous capsules, and ovate leaves with basal glands, but the stamens are more numerous and the pollen is inaperturate (like Croton). Brasiliocroton has a stellate-rosulate indumentum like some Croton species, but its anthers are erect in bud, and the position of the pistillate flowers is anomalous in Croton. Molecular data place Brasiliocroton as the closest sister group to Croton, once Astraea has been removed from Croton and placed sister to Acidocroton and Ophellantha. Wood anatomical features support the generic status of Brasiliocroton.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Berry, Paul E.; Cordeiro, Ines; Wiedenhoeft, Alex C.; Vitorino-Cruz, Maria Amelia; Lima, Leticia Ribes de. 2005. Brasiliocroton : a new crotonoid genus of Euphorbiaceae s.s. from eastern Brazil. Systematic botany. Vol. 30, no. 2 (2005): p. 357-365.

    Keywords

    Croton (genus), Molecular genetics, tropical woods, wood anatomy, tree anatomy, tree morphology, Euphorbiaceae, tree identification, Brazil, tree classification, tropical trees, Brasiliocroton

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https://www.fs.usda.gov/treesearch/pubs/22082