Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

Home to the plants of the Sonoran, Chihuahuan and Mojave Deserts

Cirsium ochrocentrum, Yellowspine Thistle

Tribulus terrestris, Puncturevine

Puncturevine or Goat-heads are weedy plants with pretty although small yellow flowers. Tribulus terrestris Puncturevine or Mexican Sandbur has compound leaves with 6 to 12 leaflets. This species blooms from March to October. Tribulus terrestris Puncturevine or Texas Sandbur has hairy (villous) flat fruits that break up into 5 nutlets with strong dorsal spines. Tribulus terrestris Puncturevine or Bullhead is a handsome plant despite the fact that it is a troublesome weed throughout the United States. The pretty yellow flowers and bright green compound leaves present an attractive plant. Tribulus terrestris

Scientific Name: Tribulus terrestris
Common Name: Puncturevine
Also Called: Bullhead, Caltrop, Goathead, Goat-heads, Mexican Sandbur, Puncture Vine, Texas Sandbur (Spanish: Toboso, Torito, Raíz de Abrojo, Cabeza de Chivo)
Family: Zygophyllaceae, Caltrop Family
Synonyms: ()
Status: Introduced
Duration: Annual
Size: Up to 10 inches or so; low-growing prostrate species.
Growth Form: Forb/herb; stems silky to appressed-hairy, sharply bristly to glabrous.
Leaves: Green; pinnately compound with 6 to 12 leaflets.
Flower Color: Yellow; fruit flat, breaking up into 5-nutlets with strong dorsal spines hairy to glabrous.
Flowering Season: March to October; April to October in California.
Elevation: Up to 7,000 feet; generally below 3,000 feet in California.
Habitat Preferences: Often abundant at roadsides, fields, vacant lots and fields, railways and disturbed areas.
Recorded Range: Tribulus terrestris is a weedy plant throughout the United States and also in British Columbia and Ontario in Canada; most likely in all Canadian provinces.

North America & US County Distribution Map for Tribulus terrestris.

U.S. Weed Information: In North America Tribulus terrestris can be weedy or invasive by 46 states and by the following authoritative sources: Weeds of Nebraska and the Great Plains; Invasive exotic pest plants in Tennessee; Weeds of the United States and Canada and by Weeds of the West. Plants included here may become weedy or invasive.

Invasive/Noxious Weed Information: In North America Tribulus terrestris is listed as a Noxious Weed by the states of: Arizona, puncturevine Prohibited noxious weed, puncturevine Regulated noxious weeds, California, puncturevine C list (noxious weeds); Colorado, puncturevine C list (noxious weeds); Idaho, puncturevine Noxious weed; Iowa, puncturevine Secondary noxious weed; Nevada, puncturevine Noxious weed; North Carolina, puncturevine Class B noxious weed; Oregon, puncturevine "B" designated weed, puncturevine Quarantine; Washington, puncturevine Class B noxious weed. Plants included here are invasive or noxious.

Wetland Indicator: No information available.
Threatened/Endangered Information: No information available.

Genus Information: In North America there are 2 species and 2 accepted taxa overall for Tribulus. World wide, The Plant List includes 12 accepted species names and includes a further 14 infraspecific rank for the genus.

In the Southwestern United States: Arizona, California, Nevada, New Mexico and Utah each have 1 species of Tribulus, Texas has 2 species. All data is approximate and subject to taxonomic changes.

Comments: Tribulus terrestris is a weedy herb introduced from southern Europe and expanding its range throughout most of North America. Tribulus terrestris is aptly called "Puncture Vine" because its fruits easily puncture bicycle tires and ready inflict pain on unsuspecting humans and perhaps small mammals as well.

Tribulus terrestris has been used as a ceremonial medicine by southwestern indigenous peoples.
Navajo Drug, Ceremonial Medicine, Plant used as a traditional ceremonial medicine.
See ethno-botanical uses at Native American Ethnobotany, University of Michigan, Dearborn.

Date Profile Completed: 10/03/2016
References:
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, California.
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search - (accessed 10/03/2016)
http://plants.usda.gov/java/ClassificationServlet?source=profile&symbol=TRIBU&display=31
The Plant List (2013). Version 1.1. Published on the Internet; http://www.theplantlist.org/ (accessed 10/03/2016).
http://www.theplantlist.org/1.1/browse/A/Zygophyllaceae/Tribulus/
The Jepson Desert Manual; 2002; Baldwin, Bruce G., et. al.; The Jepson Desert Manual: Vascular Plants of Southeastern California; pg 517; Univ. of California Press, Berkeley and Los Angeles, California
SEINet for synonyms, scientific names, recorded geographic locations and general information
http://swbiodiversity.org/seinet/(accessed 10/03/2016).