Key to Tasmanian Dicots
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Centaurea (Asteraceae) 2:378

Centaurea melitensis

Centaurea jacea

Tasmania has five introduced species of Centaurea. These are all robust annual or biennial herbs with erect stems with only tube flowers. Some have the spinous flower heads typical of thistles (the yellow flowered C. melitensis [Maltese Cockspur] and C. solstitialus [St Barnaby's Thistle], and the purple flowered C. calcitrapa [Star Thistle]). Others have fringed appendages on the phyllaries (Knapweeds - C. jacea and C. nigra).
 

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© 2019 University of Tasmania
Contact: Greg.Jordan@utas.edu.au
 

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