Centaurea calcitrapa

Star Thistle at Pialligo, ACT

Centaurea calcitrapa at Pialligo, ACT - 30 Jan 2016
Centaurea calcitrapa at Pialligo, ACT - 30 Jan 2016
Request use of media

Identification history

Centaurea calcitrapa 1 Feb 2016 BettyDonWood
Unidentified 1 Feb 2016 SilkeSma

Identify this sighting


Please Login or Register to identify this sighting.

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

   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.

Please Login or Register to comment.

Location information

Sighting information

  • 16 - 100 Abundance
  • 30 Jan 2016 03:20 PM Recorded on
  • SilkeSma Recorded by

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
2,148,925 sightings of 19,884 species in 6,408 locations from 11,278 contributors
CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.