Hymenothrix wrightii

Hymenothrix wrightii (Wright's hymenothrix[2] or Wright's thimblehead[3]) is a North American species of flowering plant in the daisy family. It grows in northwestern Mexico (Sonora, Chihuahua, Baja California) and the southwestern United States (western Texas, Arizona, New Mexico, far southern California).[4][5]

Hymenothrix wrightii
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Hymenothrix
Species:
H. wrightii
Binomial name
Hymenothrix wrightii
A.Gray 1853
Synonyms[1]
  • Hymenopappus wrightii (A. Gray) H.M. Hall
  • Trichymenia wrightii (A. Gray) Rydb.

Hymenothrix wrightii is a perennial herb up to 60 cm (2 feet) tall. One plant produces 6-8 flower heads per stem,in a flat-topped array. Each head has 15-30 white, pink, or pale purple disc flowers but no ray flowers. The individual disc flowers are larger and showier than in many other species in the family.[6][7][8]

References
  1. Tropicos, Hymenothrix wrightii A. Gray
  2. Keil, David J. (2013). "Hymenothrix wrightii". Jepson eFlora. Jepson Flora Project. Retrieved 3 August 2015.
  3. "Hymenothrix wrightii". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 3 August 2015.
  4. Biota of North America Program 2014 county distribution map
  5. SEINet, Southwestern Biodiversity, Arizona chapter
  6. Gray, Asa. 1853. Smithsonian Contributions to Knowledge 5(6): 97–98
  7. Rydberg, Per Axel. 1914. North American Flora 34(1): 56 Trichymenia wrightii
  8. Flora of North America, Hymenothrix wrightii A. Gray, 1853.


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