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''Rorippa'' is a flowering plant genus in the mustard family, Brassicaceae, native to Europe through central Asia, Africa, and North America. ''Rorippa'' species are annual to perennial herbs, usually with yellow flowers and a peppery flavour. They are known commonly as yellowcresses. ''Rorippa'' formerly included several species of watercress, now placed in the genus ''Nasturtium''. In particular, ''R. nasturtium-aquaticum'' (now ''N. officinale'') and ''R. microphylla'' (now ''N. microphyllum'') are often referred to as species of ''Rorippa''. There are about 75〔(''Rorippa''. ) Flora of China.〕 to 85〔(''Rorippa''. ) The Jepson eFlora 2013.〕〔(''Rorippa''. ) Flora of North America.〕 species in the genus. Species include:〔〔(GRIN Species Records of ''Rorippa''. ) Germplasm Resources Information Network (GRIN).〕〔(''Rorippa''. ) Integrated Taxonomic Information System.〕〔(''Rorippa''. ) USDA PLANTS.〕〔(''Rorippa'' species list. ) Flora of North America.〕 *''Rorippa alpina'' (S.Wats.) Rydb. – alpine yellowcress *''Rorippa amphibia'' (L.) Bess. – great yellowcress *''Rorippa aquatica'' – lakecress *''Rorippa austriaca'' (Crantz) Bess. – Austrian yellowcress, Austrian fieldgrass *''Rorippa barbareifolia'' (DC.) Kitagawa – hoary yellowcress *''Rorippa benghalensis'' *''Rorippa calycina'' (Engel.) Rydb. – persistent-sepal yellowcress *''Rorippa cantoniensis'' – Chinese yellowcress *''Rorippa columbiae'' (Suksd. ex B.L.Rob.) Suksd. ex Howell – Columbian yellowcress, Columbia watercress *''Rorippa crystallina'' – MacKenzie River yellowcress *''Rorippa curvipes'' Greene – bluntleaf yellowcress *''Rorippa curvisiliqua'' (Hook.) Besser ex Britton – curvepod yellowcress, western yellowcress *''Rorippa dubia'' *''Rorippa elata'' *''Rorippa globosa'' – globe yellowcress *''Rorippa indica'' Hiern. – variableleaf yellowcress *''Rorippa intermedia'' – intermediate yellowcress *''Rorippa islandica'' – northern yellowcress, northern marsh yellowcress *''Rorippa microtitis'' – Chihuahuan yellowcress *''Rorippa palustris'' (L.) Bess. – common yellowcress, yellow watercress, marshcress *''Rorippa portoricensis'' – Puerto Rico yellowcress *''Rorippa ramosa'' – Durango yellowcress *''Rorippa sarmentosa'' (G.Forst. ex DC) J.F.Macbr. – longrunner *''Rorippa sessiliflora'' – stalkless yellowcress *''Rorippa sinuata'' (Nutt.) Hitchc. – spreading yellowcress, west yellowcress *''Rorippa sphaerocarpa'' (A.Gray) Britton – roundfruit yellowcress *''Rorippa subumbellata'' Rollins – Tahoe yellowcress, Lake Tahoe yellowcress *''Rorippa sylvestris'' (L.) Bess. – creeping yellowcress, yellow fieldcress, keek *''Rorippa tenerrima'' – Modoc yellowcress *''Rorippa teres'' – southern marsh yellowcress ==References== 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「Rorippa」の詳細全文を読む スポンサード リンク
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