Source : Webster's Revised Unabridged Dictionary (1913)

Apogamy \A*pog"a*my\, n. [Pref. apo- + Gr. ? marriage.] (Bot.)
   The formation of a bud in place of a fertilized ovule or
   o["o]spore. --De Bary.

Source : WordNet®

apogamy
     n : (botany) development of an embryo without fertilization;
         especially the development in some ferns of a sporophyte
         from the gametophyte without fertilization