The Collaborative International Dictionary
Spermogonium
Spermogonium \Sper`mo*go"ni*um\, n. [NL.; spermo- + Gr. ??? offspring.] (Bot.) A conceptacle of certain lichens, which contains spermatia.
Wiktionary
spermogonium
n. (context lichenology English) A conceptacle of certain lichens, containing spermatium.