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''Raukaua'' is a genus of flowering plants in the family Araliaceae. It has an austral distribution, being indigenous to southern Argentina and Chile, as well as New Zealand and the island of Tasmania.〔David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. ISBN 978-0-521-82071-4. (See ''External links'' below). 〕 ''Raukaua'' is a genus of woody plants. They vary in habit: for example ''R. laetevirens'' is a small tree, while ''R. valdiviensis'' is a liana. Like most of Araliaceae, they have palmately compound leaves. The leaves are heteroblastic, that is, conspicuously different in form from juvenile to adult. ''R. simplex'' often produces root suckers and on these, the further the sucker is from the main shoot, the more juvenile the form of the leaves.〔 The Maoris extracted an aromatic oil from the leaves of ''R. edgerleyi''. The essential oils of the New Zealand species have been the subject of a phytochemical analysis.〔 Roderick J. Weston. 2004. Essential Oils of the Leaves of the ''Raukaua'' Genus (Araliaceae). ''Verlag der Zeitschrift für Naturforschung''. Tubingen-Mainz, Series C (A Journal of Biosciences) volume 59,pages 35-38. (See ''External links'' below). 〕 All of the species of ''Raukaua'' have been placed in ''Pseudopanax'' at one time or another, and sometimes in other genera as well.〔 David G. Frodin and Rafaël Govaerts. 2003. ''World Checklist and Bibliography of Araliaceae''. Royal Botanic Gardens, Kew. ISBN 978-1-84246-048-1. (See ''External links'' below). 〕 Molecular phylogenetic comparisons of DNA sequences have shown that ''Raukaua'' is closely related to ''Schefflera'' sensu strictissimo, ''Cheirodendron'', ''Motherwellia'', and ''Cephalaralia'' (not ''Cephalaria''!).〔 Anthony D. Mitchell, Rong Li, Joseph W. Brown, Ines Schönberger, and Jun Wen. 2012. Ancient divergence and biogeography of ''Raukaua'' (Araliaceae) and close relatives in the southern hemisphere. ''Australian Systematic Botany'' 25(6):432-446. . (See ''External links'' below). 〕 It might not be as close to ''Pseudopanax'' as was once believed.〔 Antoine N. Nicolas and Gregory M. Plunkett. 2009. The demise of subfamily Hydrocotyloideae (Apiaceae) and the realignment of its genera across the entire order Apiales. ''Molecular Phylogenetics and Evolution'' 53(1):134-151. . 〕 ''Raukaua'' is known to be polyphyletic and will eventually be revised,〔 but in its current circumscription, it comprises six species.〔 ''R. gunnii'' is endemic to Tasmania. ''R. laetevirens'' and ''R. valdiviensis'' are from southern Chile and Argentina, the latter being restricted to the Valdivian temperate rain forest. ''R. anomalus'', ''R. edgerleyi'', and ''R. simplex'' are from New Zealand. There are naturally occurring hybrids between ''R. simplex'' and the other two New Zealand species.〔 Patrick B. Heenan. 1998. The status of ''Raukaua edgerleyi'' var. ''serratus'' and ''R. x parvus'' comb. nov. ''New Zealand Journal of Botany'' 36(2):307-310. (See ''External links'' below). 〕 The type species for ''Raukaua'' is ''Raukaua edgerleyi''. 〔''Raukaua'' In: Index Nominum Genericorum. In: Regnum Vegetabile (see ''External links'' below).〕 == Species and hybrids == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Raukaua」の詳細全文を読む スポンサード リンク
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