Plants
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Sighting 2458279

Centaurea calcitrapa

Star Thistle at Pialligo, ACT

Centaurea calcitrapa at Pialligo, ACT - 30 Jan 2016 03:20 PM
Centaurea calcitrapa at Pialligo, ACT - 30 Jan 2016 03:20 PM
Centaurea calcitrapa at Pialligo, ACT - 30 Jan 2016 03:20 PM
Centaurea calcitrapa at Pialligo, ACT - 30 Jan 2016 03:20 PM
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Identification history

Centaurea calcitrapa 1 Feb 2016 BettyDonWood
Unverified 1 Feb 2016 SilkeSma

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User's notes

I think this might be Centaurea calcitrapa. There are quite a few of them on the western nature strip next to the bike path- perhaps introduced with road building material?

2 comments

MichaelMulvaney wrote:
   2 Feb 2016
Silke it has been present in Canberra for some time. I have seen it emerge on the floodplain of Jerrabomberra Wetlands in an area disturbed for powerline work, so not sure that seeds may already have been present in the Majura Valley.
Mike wrote:
   2 Feb 2016
I collected a Herbarium specimen CANB 865442.1 from Mugga Mugga in 2013. This used to be a declared noxious weed but like most weeds there are not many specimens in the Herbarium.

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Location information

Sighting information

Species information

  • Centaurea calcitrapa Scientific name
  • Star Thistle Common name
  • Not Sensitive
  • Exotic
  • Medium weed or pest
  • Up to 826m Recorded at altitude
  • Machine learning
  • In flower
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