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5. Plains Coreopsis; Coreopsis tinctoria
Photo by Jim Stasz @ USDA-NRCS Plants Database
This yellow-flowering annual plant dances in the slightest of Oklahoma breezes. It is a member of the Sunflower family (Asteraceae) too and compliments the other members of this plant family. It typically grows to be about 12 to 14 inches tall on slender stems.