FIGURE 1. Trivalvaria ochroleuca, T. recurva, and T. stenopetala. A–B. Trivalvaria ochroleuca. A. Habit, showing inflorescence position. B. Side view of bisexual flower from which the petals and stamens have fallen, showing the cylindrical receptacle. C–E. Trivalvaria recurva. C. Staminate flower, viewed from above. D. Bisexual flower, side view. E. Stamen, abaxial view. F–H. Trivalvaria stenopetala. F. Flower, side view. G. Leaf. H. Monocarp. A–B based on van Beusekom & Phengklai 193 (L), C–E based on spirit collection of Nakorn- Thiemchan NTC 13 (OWU), F–G based on Middleton et al. 3915 (A), H based on Geesink et al. 7641 (L). Illustration by D.M. Johnson.