Contact Us Host an Event Volunteer Join

Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

Enter a Plant Name:
Or choose a plant family:
Parthenium argentatum (Guayule)
Flaigg, Norman G.

Parthenium argentatum

Parthenium argentatum A. Gray

Guayule, Rubber Plant

Asteraceae (Aster Family)


USDA Symbol: PAAR5

USDA Native Status: L48 (N)

Shrub 1 to 3 feet in height and spread. Leaves lanceolate to oblanceolate; length and width variable, but average about 1 inch by 1/2 inch; margins mostly entire, sometimes with a few sharp teeth; surfaces gray or white strigillose, sometimes dotted with glands. Capitula radiate in small clusters on ebracteate pedicels; each capitulum bears 5 fertile ray florets and 20 to 30 disc florets. Native to the Chihuahuan Desert in Texas and Mexico. Habitat on rocky, calcareous soils.

This species is a source for latex used in the manufacture of high-quality rubber.


From the Image Gallery

11 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Shrub
Leaf Shape: Lanceolate , Oblanceolate
Leaf Pubescence: Glandular , Hirsute
Leaf Margin: Entire
Inflorescence: Head
Size Notes: 1 to 3 feet in height.
Fruit: Fruit a cypsela.

Bloom Information

Bloom Color: White , Yellow , Green
Bloom Time: Apr , May , Jun
Bloom Notes: Flowers white with a greenish-yellow cast.


Native Habitat: Rocky, calcareous soils in the Chihuahuan Desert.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

NPSOT - Austin Chapter - Austin, TX


Bibref 995 - Native Landscaping from El Paso to L.A. (2000) Wasowski, S. and A. Wasowski

Search More Titles in Bibliography

Additional resources

USDA: Find Parthenium argentatum in USDA Plants
FNA: Find Parthenium argentatum in the Flora of North America (if available)
Google: Search Google for Parthenium argentatum


Record Modified: 2020-06-07
Research By: TWC Staff

Go back