The Collaborative International Dictionary of English v.0.48:

cryptocoryne \cryptocoryne\ n.
   any plant of the genus Cryptocoryne; evergreen perennials
   growing in fresh or brackish water; tropical Asia.

   Syn: water trumpet.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

cryptocoryne
    n 1: any plant of the genus Cryptocoryne; evergreen perennials
         growing in fresh or brackish water; tropical Asia [syn:
         cryptocoryne, water trumpet]