a. Bot. [f. mod.L. Thalamifloræ, De Candolle 18[?] (f. THALAMUS + L. flōs, flōr- flower) + -AL. Cf. F. thalamiflore.] Belonging to the sub-class Thalamifloræ of dicotyledons, in which the stamens are inserted on the thalamus or receptacle; hypogynous. So Thalamiflorous a.
1857. Henfrey, Bot., § 454. Some Thalamiflorous Orders. Ibid., § 478. Parietal Thalamifloral Orders.
1872. Oliver, Elem. Bot., I. v. 58. Thalamifloral … as Buttercup and Wallflower.
1880. Gray, Struct. Bot., ix. § 2. 340. Thalamiflorous, petals (distinct) and stamens on the torus, i.e. free.
