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Rhaponticum heleniifolium
''Rhaponticum heleniifolium'' is a perennial herbaceous flowering plant of the genus Rhaponticum'', belonging to the Asteraceae family.
==Description==
The biological form of ''Rhaponticum heleniifolium'' is ''hemicryptophyte'' ''scapose'',〔Pignatti S. - Flora d'Italia – Edagricole – 1982. Vol. III, pag. 173〕 as its overwintering buds are situated just below the soil surface and the floral axis is more or less erect with a few leaves.
''Rhaponticum heleniifolium'' reaches on average in height.〔 The strong, thick, upright stem is quite leafy and hairy and usually has only one inflorescence. The leaves are green, while its underside is white-tomentose.〔 Regarding the morphology of leaf blades, this species (as the similar ''Rhaponticum scariosum'' Lam.) is quite polymorphic. The basal leaves are usually lanceolate or elliptical and petiolated.〔 The flower heads are pink to purple, spherical and very large (about in diameter).〔 The bracts are brownish and membranous. The flowering period extends from June to August.The flowers are hermaphroditic and are pollinated by insects. The fruits are brown achenes. ''Rhaponticum heleniifolium'' subsp. ''heleniifolium'' has scales with acute apex and the leaves are much more elongated.
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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