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rayless goldenhead

Scientific Name: Acamptopappus sphaerocephalus

Family: Asteraceae

Category: Dicot

Growth: Subshrub, Shrub

Duration: Perennial

Other Names:

       

Acamptopappus sphaerocephalus: Rayless Goldenhead

Acamptopappus sphaerocephalus, commonly known as rayless goldenhead, is a flowering plant species belonging to the aster family.

Considerations for Pets

  • This plant is a shrub.
  • Goldenrod, a related plant, is known to be poisonous to livestock.

Scientific Classification

  • Scientific Name: Acamptopappus sphaerocephalus (Harv. & A. Gray ex A. Gray) A. Gray
  • Family: Asteraceae (also known as Compositae or Aster family)
  • Rank: Species
  • Synonyms: Sphaerocephalus (mentioned in connection with the plant's common name)
  • Varieties:
    • Acamptopappus sphaerocephalus var. sphaerocephalus
    • Acamptopappus sphaerocephalus var. hirtellus S.F. Blake

Distribution and Habitat

  • Native to desert regions of the southwestern United States.
  • Occurs in the Mojave Desert.
  • Found in Arizona.

Morphological Characteristics

  • Plant Type: Shrub, Subshrub
  • Habit: Perennial
  • The plant may be large in size.
  • Leaves: Pale green to light gray-green.
  • Stems: Whitish.
  • Evergreen.

Quirky Facts

  • In summer, the rayless goldenhead assumes a white coloring.

Additional Information

  • Plant hardiness zones: 9a-11.

Associations

  • Found in the same drainage areas as Allium bigelovii and Ambrosia dumosa.

External Resources

  • Discover Life: Biology, natural history, ecology, identification, and distribution information.
  • Flora of North America.
  • United States Department of Agriculture.