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    (Vol. 07, 2004-12) A Revision of Phyllanthus Section Hylaeanthus (Euphorbiaceae)

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    Date
    2004-12
    Author
    Webster, Grady L.
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    Abstract
    A revision of Phyllanthus sect. Hylaeanthus (subg. Conami) treats seven species, mostly with a primarily Amazonian distribution, as well as one species of uncertain affinity. The section is characterized within subgenus Conami by a tendency to dioecy, unramified branchlets, distinctive pollen grains with pilate exine ornamentation, and indehiscent fruits with sarcotestal seeds. Two species are described as new: Phyllanthus puntii from western Brazil (Acre) and Bolivia, and P. awaensis from northern Ecuador. Two new subspecies of Phyllanthus attenuatus are described: P. a. ssp. incarum from western Amazonia in Ecuador, Peru, and Colombia; and P. a. ssp. tucuruiensis from Amazonian Brazil. Phyllanthus manausensis is reduced to a synonym of P. madeirensis. A key is provided to help distinguish specimens of taxa in sect. Hylaeanthus from superficially similar but unrelated species of other subgenera of Phyllanthus.
    Department
    Billie L. Turner Plant Resources Center
    Subject
    Vol. 07, 2004-12
    Euphorbiaceae
    Phyllanthus
    subgenus Conami
    sect. Hylaeanthus
    sect. Nothoclema
    sect. Pityrocladus
    URI
    http://hdl.handle.net/2152/32781
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