Ceratostema auriculatum.  A: habit.  B: close-up of rachis.  C: flower with corolla removed, showing close-up of a calyx lobe inner surface.  D: corolla, with close-up of  lobe.  E: stamens, side, front, and back views (Palacios 8447, type).  Reproduced from Flora of Ecuador 54: 243, fig. 16.  1996.