Helianthella microcephala, common name purpledisk helianthella, is a North American plant species in the family Asteraceae. It grows in the southwestern United States, in the states of Arizona, New Mexico, Colorado, and Utah.Biota of North America Program 2014 county distribution mapSEINet, Southwestern Biodiversity, Arizona chapter includes photos, description, distribution map
Helianthella microcephala is a herbaceous plant up to tall. Leaves are up to 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.Flora of North America, Helianthella microcephala (A. Gray) A. Gray 1883
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