Source : Webster's Revised Unabridged Dictionary (1913)

Stylopodium \Sty`lo*po"di*um\, n.; pl. {Stylopodia}. [NL. See
   {Style}, and {Podium}.] (Bot.)
   An expansion at the base of the style, as in umbelliferous
   plants.

Source : WordNet®

stylopodium
     n : an enlargement at the base of the style in some
         Umbebelliferae
     [also: {stylopodia} (pl)]