The Collaborative International Dictionary of English v.0.48:

Carpophyte \Car"po*phyte\ (k[aum]r"p[-o]*l[imac]t), n. [Gr.
   karpo`s fruit + fyto`n plant.] (Bot.)
   A flowerless plant which forms a true fruit as the result of
   fertilization, as the red seaweeds, the Ascomycetes, etc.
   [1913 Webster]

   Note: The division of alg[ae] and fungi into four classes
         called Carpophytes, Oophytes, Protophytes, and
         Zygophytes (or Carpospore[ae], Oospore[ae], Protophyta,
         and Zygospore[ae]) was proposed by Sachs about 1875.
         [1913 Webster]