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Handroanthus
''Handroanthus'' is a genus of flowering plants in the family Bignoniaceae.〔David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. ISBN 978-0-521-82071-4〕 It consists of 30 species of trees, known in Latin America by the common names poui, pau d'arco, or ipê. The latter sometimes appears as epay or simply ipe (unaccented) in English. The large timber species are sometimes called lapacho or guayacan, but these names are more properly applied to the species ''Handroanthus lapacho'' and ''Handroanthus guayacan'', respectively.
The name ''Handroanthus'' was established in 1970,〔''Handroanthus'' in International Plant Names Index. (see ''External links'' below).〕 but was not generally accepted. In 1992, its species were included in ''Tabebuia'' in the most recent revision of that genus.〔Alwyn H. Gentry. 1992. "Bignoniaceae: Part II (Tribe Tecomeae)". ''Flora Neotropica'' Monograph 25(part 2):1-150.〕 ''Handroanthus'' was resurrected in 2007 when a comparison of DNA sequences by cladistic methods showed that ''Tabebuia'', as then circumscribed, was not monophyletic.〔Susan O. Grose and Richard G. Olmstead. 2007. "Evolution of a Charismatic Neotropical Clade: Molecular Phylogeny of ''Tabebuia'' s.l., Crescentieae, and Allied Genera (Bignoniaceae)". ''Systematic Botany'' 32(3):650-659.〕〔Susan O. Grose and Richard G. Olmstead. 2007. "Taxonomic Revisions in the Polyphyletic Genus ''Tabebuia'' s.l. (Bignoniaceae)". ''Systematic Botany'' 32(3):660-670.〕
''Handroanthus'' is indigenous from Central America to northern Argentina, Paraguay and Chile, with one species, ''Handroanthus billbergii'', native to northern South America and the Antilles. ''Handroanthus'' is frequently cultivated far from its natural range, as an ornamental tree, for its large and showy flowers. It easily becomes naturalized where it is introduced because its seeds are prolifically produced and widely scattered by the wind.〔George W. Staples and Derral R. Herbst. 2005. "A Tropical Garden Flora" Bishop Museum Press: Honolulu, HI, USA. ISBN 978-1-58178-039-0〕 Several species are important timber trees of the American tropics.〔Alwyn H. Gentry. 1992. "A Synopsis of Bignoniaceae Ethnobotany and Economic Botany". ''Annals of the Missouri Botanical Garden'' 79(1):53-64.〕 Medicinal use has been reported, but its efficacy and side effects have not been well studied.
== Species ==
Species include:〔(【引用サイトリンク】title=The Plant List )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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