sporocarp

from WordNet (r) 3.0 (2006)

sporocarp
    n 1: specialized leaf branch in certain aquatic ferns that
         encloses the sori or clusters of sporangia [syn:
         {sporocarp}, {spore case}]

from The Collaborative International Dictionary of English v.0.48

Sporocarp \Spo"ro*carp\ (sp[=o]"r[-o]*k[aum]rp), n. [Spore + Gr.
   ? fruit.] (Bot.)
   (a) A closed body or conceptacle containing one or more
       masses of spores or sporangia.
   (b) A sporangium.
       [1913 Webster]