Thalamifloral \Thal`a*mi*flo"ral\, Thalamiflorous \Thal`a*mi*flo"rous\, a. [See {Thalamus}, and {Floral}.] (Bot.) Bearing the stamens directly on the receptacle; -- said of a subclass of polypetalous dicotyledonous plants in the system of De Candolle.