The Collaborative International Dictionary of English v.0.48:

Apiculate \A*pic"u*late\, Apiculated \A*pic"u*la`ted\, a. [See
   Apicular.] (Bot.)
   Terminated abruptly by a small, distinct point, as a leaf.
   [1913 Webster]

WordNet (r) 3.0 (2006):

apiculate
    adj 1: (of a leaf shape) having a short sharply pointed tip