Hymenoxys quinquesquamata

Hymenoxys quinquesquamata is a North American species of flowering plant in the daisy family known by the common names rincon rubberweed or rincon bitterweed. It has been found only in the states of Arizona and New Mexico in the southwestern United States. Many of the populations lie in the Huachuca Mountains of Cochise County in Arizona.[2][3]

Hymenoxys quinquesquamata
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Hymenoxys
Species:
H. quinquesquamata
Binomial name
Hymenoxys quinquesquamata
Bierner 1993
Synonyms[1]
  • Actinea quinquesquamata (Rydb.) S.F.Blake

Hymenoxys quinquesquamata grows in open areas, generally at the edges of pine-oak forests at elevations of 1,500–2,500 meters (4,900–8,200 ft). It is a perennial herb up to 100 cm (39 in) tall. One plant can produce sometimes as many as 50 flower heads in a branching array. Each head has 5–8 yellow ray flowers and 30–100 tiny yellow disc flowers.[4][5]

References
  1. The Plant List, Hymenoxys quinquesquamata Rydb.
  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 quinquesquamata Rydberg 1915. Rincon rubberweed or bitterweed
  5. Rydberg, Per Axel. 1915. North American Flora 34(2): 114–115


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