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Caltrop

Scientific Name
Tribulus terrestris
Scientific Author
Linnaeus, C (1753)
Taxonomy
(Magnoliophyta: Magnoliopsida: Sapindales: Zygophyllaceae)
Reliability
High
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Diagnostic Images

Nutlet Dorsal
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Caption
Seed Project
Source
Clare McLellan Museums Victoria
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Diagnostic Images (6)
Other Images (1)
Diagnostic Notes
Pictured: Nutlet

Description

Nutlet Colour: Reddish brown

Nutlet Length: Greater than 10mm

Nutlet Sculpture: Roughened, Rugose

Nutlet Shape: Angulated

The flattened fruits are circular, 8-12 mm wide and up to 8 mm high. At maturity they break into 5, sometimes fewer, wedge-shaped woody nutlets. Each nutlet has short spines all over the exposed surface, a pair of diverging 3-8 mm long spines about the middle of the outer surface and a pair of shorter downward pointing spines on the outer base.(Navie 2004; Barker 2007, pers. comm.)

Source: See Web Links for Weeds in Australia
More Information
Author
Clare McLellan
Created
06/08/2012 10:58 AEST
Last Updated
21/01/2013 12:36 AEST
Citation
Clare McLellan (2012) Caltrop (Tribulus terrestris) Updated on 1/21/2013 12:36:05 PM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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