papaveraceous

from The Collaborative International Dictionary of English v.0.48

Papaveraceous \Pa*pav`er*a"ceous\, a. (Bot.)
   Of, pertaining to, or resembling, a natural family of plants
   ({Papaveraceae}) of which the poppy, the celandine, and the
   bloodroot are well-known examples.
   [1913 Webster]