The Collaborative International Dictionary of English v.0.48:

Auriculate \Au*ric"u*late\, Auriculated \Au*ric"u*la`ted\, a.
   [See Auricle.] (Biol.)
   Having ears or appendages like ears; eared. Esp.:
   (a) (Bot.) Having lobes or appendages like the ear; shaped
       like the ear; auricled.
   (b) (Zool.) Having an angular projection on one or both
       sides, as in certain bivalve shells, the foot of some
       gastropods, etc.
       [1913 Webster]

   Auriculate leaf, one having small appended leaves or lobes
      on each side of its petiole or base.
      [1913 Webster]