Hymenoxys hoopesii

Hymenoxys hoopesii (formerly Dugaldia hoopesii) is a species of flowering plant in the daisy family known by the common names owl's claws, orange sneezeweed, and yerba del lobo. It is native to the western United States, where it grows in habitats of moderate elevation, such as mountain meadows in the Rocky Mountains, Sierra Nevada, southern Cascades, and other ranges. It has been found from Arizona, New Mexico, and central California north as far as Montana and Oregon.[2][3][4]

Hymenoxys hoopesii
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Hymenoxys
Species:
H. hoopesii
Binomial name
Hymenoxys hoopesii
(A.Gray) Bierner 1994
Synonyms[1]
  • Dugaldia hoopesii (A.Gray) Rydb.
  • Helenium hoopesii A.Gray 1864
  • Heleniastrum hoopesii (A. Gray) Kuntze

Hymenoxys hoopesii is an erect perennial herb approaching a meter (40 inches) in height, with smooth-edged leaves, oval on the lower stem and lance-shaped toward the top. The inflorescence bears several flower heads on erect peduncles, each lined with a base of hairy, pointed phyllaries. The flower head has a center of 100–325 tiny disc florets fringed with 14–26 orange or yellow ray florets, each ray up to 3.5 centimeters (1.4 inches) long. The fruit is an achene with a pappus of scales.[5]

References
  1. Tropicos, Hymenoxys hoopesii (A. Gray) Bierner
  2. Biota of North America Program 2014 county distribution map
  3. SEINet, Southwestern Biodiversity, Arizona chapter
  4. Calflora taxon report, University of California, Hymenoxys hoopesii (A. Gray) Bierner, 1994. Owl’s-claws, orange-sneezeweed
  5. Flora of North America, Hymenoxys hoopesii (A. Gray) Bierner, 1994. Owl’s-claws, orange-sneezeweed


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