Hymenoxys subintegra

Hymenoxys subintegra is a North American species of flowering plant in the daisy family known by the common name Arizona rubberweed. It has been found only in the states of Arizona and Utah in the southwestern United States. Many of the populations lie inside Grand Canyon National Park, others in Kaibab National Forest.[2][3]

Hymenoxys subintegra
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Hymenoxys
Species:
H. subintegra
Binomial name
Hymenoxys subintegra
Synonyms[1]

Actinea subintegra (Cockerell) S.F.Blake

Hymenoxys subintegra grows in open areas, generally at the edges of forests at elevations of 2100–2800 meters (7000–9300 feet). It is a perennial herb up to 60 cm (2 feet) tall. One plant can produce 10–85 flower heads in a branching, flat-topped array. Each head has 10–16 yellow ray flowers and 50-100 tiny yellow disc flowers.[4][5]

References
  1. The Plant List, Hymenoxys subintegra Cockerell
  2. Biota of North America Program 2014 distribution map
  3. SEINet, Southwestern Biodiversity, Arizona chapter photos, distribution map, description
  4. Flora of North America, Hymenoxys subintegra Cockerell, 1904. Arizona rubberweed
  5. Cockerell, Theodore Dru Alison. 1904. Bulletin of the Torrey Botanical Club 31(9): 480–481


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