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Rosa persica
''Rosa persica'' is an anomalous species of rose that at one time was placed in a separate genus ''Hulthemia''. It is native to deserts and steppes from Iran and Afghanistan in the south, through Central Asia, to western Siberia in the north.〔Phillips, R.; Rix, M. 1988. ''The Random House Book of Roses''. Random House, New York.〕 Its distinctive characteristics include a simple leaf without stipules (most rose leaves are pinnate with 3 to 7 leaflets, and have stipules), and a distinctive flower with a darker coloured central zone. In its natural habitat it is a deep-rooted weed that suckers - growing in Iranian fields for example, where it is collected for fuel once the grain crop has been harvested〔Phillips R. and Rix, M., ''Roses'', Macmillan, 1994, p19〕 - but it is difficult to grow in gardens and rarely cultivated.
''Rosa berberifolia'' is sometimes considered to be variety of this species, as ''R. persica'' var. ''berberifolia''.
== Hybrids ==
''Rosa persica'' can hybridise with other rose species,〔(Jack Harkness "Breeding with ''Hulthemia persica'' (''Rosa persica'')", American Rose Annual 1977 )〕 and these hybrids have in the past been known as the hybrid genus ×''Hulthemosa''. One of the few ×''Hulthemosa'' cultivars commercially available is 'Alissar, Princess of Phoenicia' (also known as 'Harsidon').〔(HelpMeFind.com listing for rose cultivar 'Alissar, Princess of Phoenicia' )〕 In the spring of 2012, rose hybridizer Jim Sproul released a new line of ''Hulthemia'' hybrids known as Eyeconics, the culmination of fifteen years of effort on his part.
The yellow colour in cultivated roses is not generally derived from this species, but from other yellow-flowered wild roses.
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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