The Collaborative International Dictionary of English v.0.48:

Multiplicate \Mul"ti*pli*cate\, a. [L. multiplicatus, p. p. of
   multiplicare. See Multiply.]
   Consisting of many, or of more than one; multiple; multifold.
   [1913 Webster]

   Multiplicate flower (Bot.), a flower that is double, or has
      an unusual number of petals in consequence of the abnormal
      multiplication of the parts of the floral whorls.
      [1913 Webster]