Didonica crassiflora.  A: habit with inset of leaf lower surface.  B: calyx, pedicel, and bracteoles.  C: corolla.  D: flower in longitudinal section.  E: ovary in cross section.  F: stamens, lateral and ventral views (from van der Werff & van Hardeveld 6614, type).  Reproduced from Systematic Botany 16(4): 593, fig. 4.  1991.