Source : Webster's Revised Unabridged Dictionary (1913)

Guttiferous \Gut*tif"er*ous\, a. (Bot.)
   (a) Yielding gum or resinous substances.
   (b) Pertaining to a natural order of trees and shrubs
       ({Guttifer[ae]}) noted for their abounding in a resinous
       sap.