Thymophylla pentachaeta

Thymophylla pentachaeta
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Thymophylla
Species:
T. pentachaeta
Binomial name
Thymophylla pentachaeta
Synonyms[1]
  • Dyssodia pentachaeta (DC.) B.L.Rob.
  • Hymenatherum pentachaetum DC.

Thymophylla pentachaeta, also known as fiveneedle pricklyleaf,[2] golden dyssodia or dogweed, is a perennial or subshrub in the family Asteraceae.

The plant grows up to 20 centimetres (8 in) tall. The leaves are about 1.5 cm (1⁄2 in) long and pinnately divided. From April to October, atop leafless stalks are solitary yellow flower heads, 13 millimetres (1⁄2 in) wide, with 8–13 rays surrounding disk flowers.[3] T. acerosa is woodier, with leaves closer to the flowers.[3]

Four varieties are recognised:[1]

  • Thymophylla pentachaeta var. belenidium (DC.) Strother
  • Thymophylla pentachaeta var. hartwegii (A.Gray) Strother
  • Thymophylla pentachaeta var. pentachaeta
  • Thymophylla pentachaeta var. puberula (Rydb.) Strother

The species is native to the southwestern and south-central United States, Mexico, and Argentina,[1] being found in arid climates.[3]

References

  1. ^ a b c "Thymophylla pentachaeta (DC.) Small". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2 April 2025.
  2. ^ NRCS. "Thymophylla pentachaeta". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 10 December 2015.
  3. ^ a b c Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. pp. 401–402. ISBN 978-0-375-40233-3.
This article is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.