#basidium  a small club-shaped structure typically bearing four basidiospores at the ends of minute projections; unique to basidiomycetes
  supertype:  #reproductive_structure  the parts of a plant involved in its reproduction
  subtype:  #promycelium  the basidium of various fungi
  part:  #hypobasidium  special cell constituting the base of the basidium in various fungi especially of the order Tremellales

No statement uses or specializes #basidium; click here to add one.