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          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.

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          Parthenium argentatum (Guayule)
          Flaigg, Norman G.

          Parthenium argentatum

          Parthenium argentatum A. Gray

          Guayule, Rubber Plant

          Asteraceae (Aster Family)

          Synonym(s):

          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.

          Distribution

          USA: TX
          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

          Bibliography

          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

          Metadata

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

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