pycnidia

from The Collaborative International Dictionary of English v.0.48

Pycnidium \Pyc*nid"i*um\, n.; pl. {Pycnidia}. [NL., fr. Gr. ?
   crowded.] (Bot.)
   In certain fungi, a flask-shaped cavity from the surface of
   the inner walls of which spores are produced.
   [1913 Webster]