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Gillespie, Lynn J; Cardinal-McTeague, Warren M; Wurdack, Kenneth J
PhytoKeys, 12/2020, Volume: 169, Issue: 2Journal Article
L.J.Gillespie & Card.-McTeag., , is described as a new member of Euphorbiaceae tribe Plukenetieae subtribe Tragiinae, to accommodate , a species known from western Amazonas, Venezuela and, newly reported here, from Amazonas, Brazil. The genus is unique in the subtribe for having 5-colpate pollen and staminate flowers with filaments entirely connate into an elongate, cylindrical staminal column terminated by a tight cluster of anthers. Phylogenetic analyses based on nuclear rDNA ITS and sampling 156 accessions across the diversity of Tragiinae (all 12 genera and 77 of ~195 species) also support as a distinct lineage that is separate from . A revised key to the genera of Tragiinae in South America and Central America is provided.
