Page author: David Giblin
Tribulus terrestris
puncture vine

Distribution: East of the Cascades crest in Washington; widely distributed throughout much of North America.

Habitat: Noxious weed of sandy soils and roadsides.

Flowers: May-September

Origin: Introduced

Conservation Status: Not of concern


Stiff-hairy, prostrate annual, forming mats 3-10 dm. broad.


Leaves opposite, pinnate; leaflets 4-8 pairs, obliquely oblong-ovate, 5-15 mm. long; stipules 1-2 mm. long.


Flowers solitary on short, axillary peduncles; sepals 5; petals 5, yellow, 3-5 mm. long, attached at the edge of a 10-lobed disk; stamens 10, borne within the disk; style 1, stigma 5-lobed.


Fruit depressed, deeply 5-lobed, separating at maturity into 5 hard, 2-spined segments, the spines 2-6 mm. long, with numerous smaller spines that form a broad, dorsal, longitudinal row.

Accepted Name:
Tribulus terrestris L.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Tribulus terrestris in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Tribulus terrestris checklist entry.

E-Flora BC: Tribulus terrestris atlas page.

CalPhotos: Tribulus terrestris photos.

USDA Plants: Tribulus terrestris information.

22 photographs:
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