- Tyrol Knapweed
Taxobox
name = "Centaurea nigrescens"
image_width = 250px
image_caption = Tyrol Thistle
regnum =Plant ae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo =Asterales
familia =Asteraceae
tribus =Cynareae
genus = "Centaurea "
species = "C. nigrescens"
binomial = "Centaurea nigrescens"
binomial_authority = Willd.Tyrol knapweed ("Centaurea nigrescens") is a perennial plant of the
star thistle genus that grows natively in Central and South-Eastern Europe (from SouthernGermany and NorthernItaly toRomania andBulgaria ), but has also been introduced and is now anoxious weed in the NorthernUnited States ,Canada and SouthernAustralia . It has purple flowers and it flowers in the summer (June to September).
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