Coreopsis tinctoria, Golden Tickseed
Scientific Name: Coreopsis tinctoria
Common Name: Golden Tickseed
Also Called: Calliopsis, Golden Coreopsis, Goldenwave, Plains Coreopsis and Plains Tickseed
Family: Asteraceae, Sunflower Family
Synonyms: (Coreopsis atkinsoniana, Coreopsis cardaminefolia, Coreopsis similis, Coreopsis stenophylla)
Duration: Annual, biennial or perennial.
Size: Up to 2 feet or more.
Growth Form: Forb/herb; erect stem from basal rosette, multiple branching.
Leaves: Green; opposite, mostly linear, smooth, pinnately divided into linear lobes, 3 to 4 inches long.
Flower Color: Bright yellow and brown; numerous small radiate heads on slender stalks about an inch wide, 8 yellow ray flowers with notched ends, disk flowers maroon or reddish-brown; fruit is an achene.
Flowering Season: June to September, follows monsoon rainfall, may bloom throughout the year.
Elevation: 2,000 to 7,000 feet.
Habitat Preferences: Various habitat types, meadows, roadsides, disturbed areas, either sandy or clay soils
Recorded Range: Throughout the United States and Canada and northern Mexico. Northern Arizona.
U.S. Weed Information: Coreopsis tinctoria is listed in Weeds of Nebraska and the Great Plains, and in Weeds of the United States and Canada. Plants included here may become weedy or invasive.
Invasive/Noxious Weed Information: No data available.
Wetland Indicator:Coreopsis tinctoria is listed on the USDA 2012 National Wetland Plant List.
Threatened/Endangered Information: No data available
Coreopsis tinctoria var. atkinsoniana, occurs in western North America;
Coreopsis tinctoria var. similis, distribution limited to Texas; and
Coreopsis tinctoria var. tinctoria, same localities as recorded range above.
Comments: Golden Tickseed is native to western and eastern United States and it is interesting that it is considered a weed in the mid-west. It is a common cultivated landscape plant throughout the country under the name Calliopsis.
Golden Tickseed has been used by indigenous people as a ceremonial chant lotion and to make tea. See species account from Native American Ethnobotany, University of Michigan, Dearborn.