Helianthella microcephala

Helianthella microcephala, common name purpledisk helianthella,[2] is a North American plant species in the sunflower family. It grows in the southwestern United States, in the states of Arizona, New Mexico, Colorado, and Utah.[3][4]

Helianthella microcephala
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Asteroideae
Tribe:
Heliantheae
Genus:
Helianthella
Species:
H. microcephala
Binomial name
Helianthella microcephala
(A.Gray) A.Gray 1883
Synonyms[1]
  • Encelia microcephala A.Gray 1873

Helianthella microcephala is a herbaceous plant up to 80 cm (31 in) tall. Leaves are up to 25 cm (9.8 in) long. The plant usually produces 3-15 yellow flower heads per stem, in a flat-topped array. Each head contains 5-13 yellow ray flowers surrounding numerous dark brown or dark purple (almost black) disc flowers.[5]

References
  1. The Plant List, Helianthella microcephala (A.Gray) A. Gray
  2. "Helianthella microcephala". 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. Flora of North America, Helianthella microcephala (A. Gray) A. Gray 1883


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