pol·y·an·thus 
(pŏl′ē-ănthəs)
(pŏl′ē-ănthəs)n. pl. pol·y·an·thus·es
Any of a group of hybrid garden primroses having clusters of variously colored flowers.
[New Latin, from Greek poluanthos, having many flowers : polu-, poly- + anthos, flower.]