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''Polyscias racemosa'', or false 'ohe, is a species of flowering plant in the family Araliaceae. As ''Munroidendron racemosum'', the species was until recently considered to be the only species in the monotypic genus ''Munroidendron''. With the change in classification, ''Munroidendron'' is now obsolete. ''Polyscias racemosa'' is endemic to the Hawaiian island of Kauai.〔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 (See ''External links'' below).〕 It is very rare in the wild and some of its original habitat has been replaced by sugar cane plantations.〔Earl Edward Sherff. 1956. "Some Recently Collected Dicotyledonous Hawaiian Island and Peruvian Plants". ''American Journal of Botany'' 43(7):475-478.〕 It was thought for some time to be probably extinct, but was rediscovered a few years prior to 1967.〔Benjamin C. Stone. 1967. "A review of the endemic genera of Hawaiian plants" ''Botanical Review'' (Lancaster) 33(3):216-259.〕 Using cladistic methods, phylogenetic studies of DNA have shown that the closest relative of ''Munroidendron racemosum'' is ''Reynoldsia sandwicensis''.〔Gregory M. Plunkett and Porter P. Lowry II. 2010. "Paraphyly and polyphyly in ''Polyscias'' sensu lato: molecular evidence and the case for recircumscribing the "pinnate genera" of Araliaceae". ''Plant Diversity and Evolution'' (formerly ''Botanische Jahrbucher'') 128(1-2):23-54. .〕 These two species are now known as ''Polyscias racemosa'' and ''Polyscias sandwicensis'', respectively. They are two of the 21 species now placed in ''Polyscias'' subgenus Tetraplasandra.〔Porter P. Lowry II and Gregory M. Plunkett. 2010. "Recircumscription of ''Polyscias'' (Araliaceae) to include six related genera, with a new infrageneric classification and a synopsis of species". ''Plant Diversity and Evolution'' (formerly ''Botanische Jahrbucher'') 128(1-2):55-84. . (See ''External links'' below).〕 ''Polyscias racemosa'' is known in cultivation in Hawaii.〔Clyde T. Imada, George W. Staples, and Derral R. Herbst. undated. Annotated Checklist of Cultivated Plants of Hawai‘i. (See ''External links'' below).〕 Cultivation procedures for ''Polyscias racemosa'' have been studied.〔Kerin E. Lilleeng-Rosenberger. 2005. ''Growing Hawaii's Native Plants''. Mutual Publishing. ISBN 978-1-56647-716-1〕 ==Description== ''Polyscias racemosa'' is a small tree growing to tall, with a straight trunk, spreading branches, and smooth, gray bark.〔Warren L. Wagner, Derral R. Herbst, and Sy H. Sohmer. ''Manual of the Flowering Plants of Hawaii'', Revised Edition, 1999. Bishop Museum Press: Hololulu〕 Like many members of ''Polyscias'', it is sparingly branched and thick-stemmed, with large imparipinnate leaves, but not as extreme in these characteristics as is ''Polyscias nodosa''. Its leaves are pinnate, long, with oval leaflets, each of which is over long. These trees are dry season deciduous, dropping most of their leaves during their summer blooming season. Its small, pale yellow flowers hang in long, rope-like strands. The inflorescence is racemose in form, with up to 250 flowers.〔Peter S. Green (author) and Mary Grierson (illustrator). 1996. ''A Hawaiian Florilegium: Botanical Portraits from Paradise''. University of Hawaii Press: Honolulu, Hawaii. ISBN 978-0-915809-20-2.〕 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「Polyscias racemosa」の詳細全文を読む スポンサード リンク
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