Above: False Sunflower in Lake Wingra in Madison, Wisconsin. (6/24/22).
False Sunflower - Heliopsis helianthoides
Not a true sunflower, this native plant grows from 2'- 5' tall and prefers part to full sun in areas like prairies, along roads and edges of woods.
Flowers are 1 1/2" to 3 1/2" across, with 8 to 16 pale yellow to orange-yellow petals (ray flowers) and a dark yellowish brown cone-shaped center disk.
False Sunflower have oval to triangular or lance-shaped leaves that are coarsely toothed (or have serrated edges). They may smooth or hairy or rough in texture. They are attached to the the stem on a leaf stalk up to about 1 inch long.
False Sunflower blooms from June - Sept.
Other Names: Smooth Oxeye, Common Ox-eye, Sunflower Heliopsis.
Above: False Sunflower bracts in Oak Savanna in Madison, Wisconsin (7/25/22). The bracts alternate, the inner bracts are short with pointed tips and the often fuzzy outer bracts are longer and broader than the inner bracts with more rounded tips.
For more information on the False Sunflower, visit Wikipedia.
Or, visit the UW-Madison Wisconsin State Herbarium website page about False Sunflower - Heliopsis helianthoides.
Above: False Sunflower on shore of retaining pond in Madison, Wisconsin. (6/27/21).
Above: False Sunflower on shore of retaining pond in Madison, Wisconsin. (6/23/22).
Above: False Sunflower on shore of retaining pond in Madison, Wisconsin. (7/31/20).
Above: False Sunflower specimen collected on roadside in LaGrange in Walworth County, Wisconsin on August 15, 1931.
Above: False Sunflower specimen collected 2.8 miles from St. Croix Falls, Wisconsin on July 8, 1928.
Above: 1894 False Sunflower botanical illustration.
Above: 1913 False Sunflower botanical drawing.