Helianthella uniflora, the oneflower helianthella,[2] is a North American plant species in the family Asteraceae.

[3][4] Helianthella uniflora is a herbaceous plant up to 120 cm (3.9 ft) tall.

Leaves are up to 25 cm (9.8 in) long, each with 3 prominent veins running the length of the leaf.

Each head contains 11-21 bright yellow ray flowers surrounding numerous yellow disc flowers.

[5] Media related to Helianthella uniflora at Wikimedia Commons