Tribulus terrestris

Caltrop, Cat-head at Tharwa, ACT

Tribulus terrestris at Tharwa, ACT - 14 Mar 2020
Tribulus terrestris at Tharwa, ACT - 14 Mar 2020
Tribulus terrestris at Tharwa, ACT - 14 Mar 2020
Tribulus terrestris at Tharwa, ACT - 14 Mar 2020
Tribulus terrestris at Tharwa, ACT - 14 Mar 2020
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Identification history

Tribulus terrestris 17 Mar 2020 MichaelMulvaney
Unidentified 16 Mar 2020 michaelb

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User's notes

Next to car park area, north of Tharwa bridge. The plant has a prostrate habit and forms a dense mat.

3 comments

mcosgrove wrote:
   16 Mar 2020
I think the fruits are immature and haven't developed their full spine length.
RWPurdie wrote:
   17 Mar 2020
Looks like a caltrop, probably Tribulus terrestris.
   17 Mar 2020
The dry summer followed by heavy early Autumn rains are just what this plant likes and it is flowering all over Canberra, which I notice because as a push bike rider this plant has given me numerous punctures.

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Location information

Sighting information

  • 20 Abundance
  • 14 Mar 2020 09:47 PM Recorded on
  • michaelb Recorded by

Additional information

  • True In flower
  • Less than 10cm Plant height

Species information

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  • Confirmed by an expert moderator
  • Nearby sighting(s) of same species
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