Source : Webster's Revised Unabridged Dictionary (1913)

Umbellifer \Um*bel"li*fer\, n. [NL. See {Umbelliferous}.] (Bot.)
   A plant producing an umbel or umbels.

Source : WordNet®

umbellifer
     n : any of numerous aromatic herbs of the family Umbelliferae
         [syn: {umbelliferous plant}]