aroideous

from The Collaborative International Dictionary of English v.0.48

Aroid \A"roid\, Aroideous \A*roid"e*ous\, a. [Arum + -oid.]
   (Bot.)
   Belonging to, or resembling, the Arum family of plants
   ({Araceae}).

   Syn: araceous
        [1913 Webster]