PLAINS COREOPSIS
File Size: 83 KB
 
Coreopsis tinctoria  Nutt.
Riley County, Kansas
Annual
Height: 2-4 feet
Family: Asteraceae - Sunflower Family
Flowering Period:   June, July, August, September
Stems: Erect, single, much-branched above, glabrous.
Leaves: Mostly opposite, nearly sessile or short-stalked, 2 to 4 inches long, 1-2 times pinnately divided; segments narrowly linear; upper leaves less divided.
Inflorescences: Heads, numerous, terminal, .5 to 1.5 inch wide; bracts in 2 series, outer bracts 6-9, narrowly lanceolate to triangular, 1/2 as long as inner bracts
Flowers: Ray florets 6-10, somewhat wedge-shaped, to 1/2 inch long, yellow with reddish brown spot at bases; tips prominently 3-lobed; disk florets numerous, corollas 4-lobed, purplish brown.
Fruits: Achenes, linear, tiny, flattened, often wingless, black, usually without bristles or scales, enclosing small seed.
Habitat: Damp disturbed sites, roadside ditches and low, sandy areas.
Distribution: Throughout Kansas.
Uses: Native Americans made a hot beverage from plains coreopsis, and early settlers placed plants in their mattresses because they believed they repelled fleas and bedbugs.
Comments: Plains coreopsis is cultivated as an ornamental.

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