Thalamifiorae

Thalamifiorae, one of the two divisions or series into which polypetalous dicotyledons (q.v.) are divided. It is characterised by the hypogynous or thalamifloral insertion of the stamens - i.e. by their insertion directly on the thalamus or floral receptacle which has not, as it has in the other division, the Calycifiorae (q.v.), grown out into a disc or tube, the so-called calyx-tube. With hypogynous stamens, the ovary in this division is necessarily superior. The division includes, among others, the large orders Ranunculaceae, Cruciferae, Violaceae, Caryophyllaceae, Guttiferae, Malvaceae, Geraniaceae, and Rutaceae.