Etymology: Coreopsis: from Greek koris, "a bug," and -opsis, indicating a resemblance, therefore meaning bug-like, referring to the achenes which look like ticks
Plants: erect, perennial, 8"'-24" tall forb; clustered stems with most leaves only near the base
Leaves: long and narrow, usually un-lobed or with 2 small side lobes
Flowers: head 1 1/4"-2 3/4" wide with yellow, 1/2"-1" long, notched rays, disk 1/3"-3/4" wide; inflorescence of one to a few heads on long stalks; blooms May-Aug.
Fruits: dry seed with flat, thin wings and no fluffy pappus
Habitat: full sun; dry to moderate moisture; prairies, meadows; in rocky, sandy, loamy soil
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 8, Wetland Indicator = FACU Atlas of the Wisconsin Prairie and Savanna Flora: by T.S. Cochrane & H.H. Iltis: habitat, distribution infomation / flowering and fruiting times USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key