The Collaborative International Dictionary of English v.0.48:

Pedunculate \Pe*dun"cu*late\, Pedunculated \Pe*dun"cu*la`ted\,
   a. (Biol.)
   Having a peduncle; growing on a peduncle; as, a pedunculate
   flower; a pedunculate eye, as in a lobster.
   [1913 Webster]