Ceratostema pedunculatum.  A: habit showing elongated inflorescence.  B: flower showing close-ups of bracteole and corolla lobe.  C: stamens, front, side, and back views, with close-up of dehiscence pores (A from Neill 9594, type;  B-C from Palacios et al. 8781).  Reproduced from Flora of Ecuador 54: 231, fig. 15.  1996.