The Collaborative International Dictionary of English v.0.48:

Racemose \Rac"e*mose`\ (r[a^]s"[-e]*m[=o]s`), a. [L. racemosus
   full of clusters.]
   Resembling a raceme; growing in the form of a raceme; as,
   (Bot.) racemose berries or flowers; (Anat.) the racemose
   glands, in which the ducts are branched and clustered like a
   raceme. --Gray.
   [1913 Webster]

WordNet (r) 3.0 (2006):

racemose
    adj 1: having stalked flowers along an elongated stem that
           continue to open in succession from below as the stem
           continues to grow; "lilies of the valley are racemose"