| 词条 | Centaurea nigrescens |
| 释义 | {{Unreferenced|type=plant|date=December 2009}}{{Italic title}}{{Taxobox |name = Centaurea nigrescens |image = Centaurea 02 bgiu.jpg |image_caption = Tyrol Thistle |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Cynareae |genus = Centaurea |species = C. nigrescens |binomial = Centaurea nigrescens |binomial_authority = Willd. |synonyms = Centaurea dubia Suter |}} Centaurea nigrescens (Tyrol knapweed, short-fringed knapweed or Tyrol thistle) is a perennial plant of the star thistle genus that grows natively in Central and South-eastern Europe (from Southern Germany and Northern Italy to Romania and Bulgaria), but has also been introduced and is now a noxious weed in the Northern United States, Canada and Southern Australia. It has purple flowers and it flowers in the summer (June to September). {{Taxonbar|from=Q627352}}{{Cynareae-stub}} 1 : Centaurea |
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