Helianthella quinquenervis

Helianthella quinquenervis, fivenerve helianthella,[2] is a North American plant species in the sunflower family. It grows in the mountains of the western United States and northern Mexico. This include the Rockies, the Black Hills, the ranges of the Great Basin, and the northern Sierra Madre, from Montana, Oregon, and South Dakota south as far as western Chihuahua and Coahuila.[3][4][5]

Helianthella quinquenervis
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Asteroideae
Tribe:
Heliantheae
Genus:
Helianthella
Species:
H. quinquenervis
Binomial name
Helianthella quinquenervis
(Hook.) A.Gray 1883
Synonyms[1]

Helianthella quinquenervis is a herbaceous plant up to 150 cm (4.9 ft) tall. Leaves are larger than those of most related species, up to 50 cm (20 in) long, each with 3 or 5 prominent veins running the length of the leaf. The plant usually produces only one yellow flower head per stem, nodding (hanging). Each head contains 8-21 bright yellow ray flowers surrounding numerous yellow disc flowers.[6]

References
  1. The Plant List, Helianthella quinquenervis (Hook.) A. Gray
  2. "Helianthella quinquenervis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 20 July 2015.
  3. Biota of North America Program 2014 county distribution map
  4. SEINet, Southwestern Biodiversity, Arizona chapter includes photos, description, distribution map
  5. photo of herbarium specimen collected in Coahuila in 1985
  6. Flora of North America, Helianthella quinquenervis (Hooker) A. Gray, 1883.


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