Source : Webster's Revised Unabridged Dictionary (1913)

Sporophore \Spo"ro*phore\, n. [Spore + Gr. ? to bear.] (Bot.)
   (a) A placenta.
   (b) That alternately produced form of certain cryptogamous
       plants, as ferns, mosses, and the like, which is
       nonsexual, but produces spores in countless numbers. In
       ferns it is the leafy plant, in mosses the capsule. Cf.
       {O["o]phore}.

Source : WordNet®

sporophore
     n : a spore-bearing branch or organ: the part of the thallus of
         a sporophyte that develops spores; in ferns and mosses
         and liverworts is practically equivalent to the
         sporophyte