Coreopsis leavenworthii
Encyclopedia
Coreopsis leavenworthii (Leavenworth's Tickseed) is an annual or short lived perennail plant species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of the genus Coreopsis in Asteraceae. It is often grouped within Coreopsis tinctoria which it resembles. Plants typically grow 30 to 70 cm tall with yellow flower heads that sometimes have reddish-brown blotches at the base of the ray laminae or petals. The foliage is 1 or 1.5 pinnately to bipinnately compound with entire edges, and elliptic to oblanceolate to linear shaped.

Plants are native to the state of Florida and bloom year round, with heaviest blooming during the months of May, June and July. It is found growing in ditches and flatwood
Flatwood
Flatwood is a soil series with impaired drainage that occurs in the southeastern United States. Flatwood soils are upland soils formed from marine sediments. A shallow water table plays a role in soil formation, typically the water table is only a few feet deep and fluctuates during the year...

s on moist sandy soils.
It's cultivated in gardens for its attractive flowers.
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