Tribulus terrestris

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1459483
Taxonomy
Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Sapindales
Family: Zygophyllaceae
Genus: Tribulus
Species: T. terrestris
Scientific Name
Tribulus terrestris
L.
Common Names

puncturevine, bullhead, caltrop, goathead, Mexican sandbur, puncture vine, Texas sandbur

Overview

Appearance
Tribulus terrestris is an annual, low-spreading forb native to the Mediterranean.
Foliage
Leaves are opposite, hairy, 1-3 in. (2.5-7.6 cm) long, and divided into 8-18 oblong leaflets.
Flowers
Flowering occurs from midsummer to frost, when 5-petaled, yellow, 0.5 in. (1.27 cm) wide flowers develop singly in the axils of the leaves.
Fruit
Fruit are circular, spiny burs that split into 5 sections. Burs can cause injury to bicycle tires, bare feet, and even small truck tires.
Ecological Threat
Plants invade roadsides, pastures, fields and other disturbed areas. Plants are toxic to sheep and other grazers.

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