The Collaborative International Dictionary
Thalamifloral
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.
Wiktionary
thalamifloral
a. (context botany English) Bearing the stamens directly on the receptacle.