Fig. 1. (A–F) Flowers of Mascagnia sepium and Banisteriopsis lutea showing the different flag petals, and the presence (A) or lack (B) of elaiophores (arrow). Scale bars = 2·5 mm. (C) Elaiophores of M. cordifolia with oil accumulated under the transparent cuticle (arrow). Scale bar = 1·0 mm. Arrangements of styles/stigmas and stamens in flowers of (D) B. adenopoda, (E) Tetrapterys guilleminiana, and (F) Dicella bracteosa. Scale bars = 5·0 mm.