Centaurea nigrescens

Centaurea nigrescens
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Centaurea
Species:	C. nigrescens
Binomial name
	Centaurea nigrescens; Willd.
Synonyms
	Centaurea dubia Suter

Centaurea nigrescens, the Tyrol knapweed, short-fringed knapweed or Tyrol thistle, is a perennial plant in the genus Centaurea that grows natively in Central and South-eastern Europe (from Southern Germany and Northern Italy to Romania and Bulgaria). It has also been introduced and is now a noxious weed in the Northern United States, Canada, and Southern Australia.^[1] It has purple flowers and it flowers in the summer (June to September).

References

^ Formisano, Carmen; Senatore, Felice; Bancheva, Svetlana; Bruno, Maurizio; Maggio, Antonella; Rosselli, Sergio (February 2010). "Volatile Components of Aerial Parts of Centaurea nigrescens and C. stenolepis Growing Wild in the Balkans". Natural Product Communications. 5 (2): 273–278. doi:10.1177/1934578X1000500222. ISSN 1934-578X. PMID 20334143. S2CID 33985281.

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[1] Formisano, Carmen; Senatore, Felice; Bancheva, Svetlana; Bruno, Maurizio; Maggio, Antonella; Rosselli, Sergio (February 2010). "Volatile Components of Aerial Parts of Centaurea nigrescens and C. stenolepis Growing Wild in the Balkans". Natural Product Communications. 5 (2): 273–278. doi:10.1177/1934578X1000500222. ISSN 1934-578X. PMID 20334143. S2CID 33985281.

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