| 词条 | Rhaponticum scariosum | |||
| 释义 |
|image = Asteraceae - Rhaponticum scariosum.JPG |image_caption = Flower of Rhaponticum scariosum |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |genus = Rhaponticum |species = R. scariosum |binomial = Rhaponticum scariosum |binomial_authority = Lam. }} Rhaponticum scariosum, common name Giant Scabiosa, is a perennial herbaceous flowering plant of the genus Rhaponticum, belonging to the Asteraceae family. DescriptionThe biological form of Rhaponticum scariosum is hemicryptophyte scapose,[1] 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 scariosum reaches on average {{convert|30|-|150|cm}} in height.[1] The strong, thick, upright stem is leafy and hairy, woolly-tomentose and usually has only one inflorescence. The leaves are green, while its underside is white-tomentose,[1] with irregularly toothed edges. The basal leaves are heart-shaped and petiolated, about {{convert|30|-|40|cm}} long, the upper leaves are smaller, lanceolate, about {{convert|10|-|22|cm}} long.[1] The flower heads are pink to purple, spherical and very large (about {{convert|6|-|7|cm}} in diameter).[1] The bracts are brownish and scarious. The flowering period extends from June to August.The flowers are hermaphroditic and are pollinated by insects. The fruits are brown achenes. DistributionThis quite rare plant occurs in Italy, France, Switzerland, Austria and Slovenia. HabitatIt grows in sub-alpine and alpine meadows, stony slopes and thickets. This plant prefers slightly moist and mostly calcareous soils, at altitudes from 750 to 2500 meters.[1] GallerySynonyms
References1. ^1 2 3 4 5 Pignatti S. - Flora d'Italia – Edagricole – 1982. Vol. III, pag. 173 2. ^Synonyms in Compositae 3. ^Synonyms in Wikispecies
External links
1 : Cynareae |
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