1) Coreopsis 2) Coreopsis tinctoria 3) Tickseed 4) Tickweed 
Calliopsis is the generic name of two groups of organisms. It can refer to: ...
• (n.) A popular name given to a few species of the genus Coreopsis, especially to C. tinctoria of Arkansas.
Cal`li·op'sis noun [ New Latin , from Greek prefix 
[n] - North American annual widely cultivated for its yellow flowers with purple-red to brownish centers
calliopsis A North American annual plant (Coreopsis tinctoria) widely cultivated for its beautiful showy flower heads with yellow rays and purple-red to brownish centers.
Coreopsis tinctoria noun North American annual widely cultivated for its yellow flowers with purple-red to brownish centers; in some classifications placed in a subgenus Calliopsis