Plutarchia ecuadorensis.  A: habit.  B: leaf undersurface.  C: flower showing pedicel, bracteoles, calyx, and corolla.  D: corolla.  E: stamens, lateral and ventral views, and inset of dehiscence pores.  F: cross section of 4-locular ovary (from Luteyn & Lebrón-Luteyn 5778, type).  Reproduced from Brittonia 44(2): 242, fig. 1.  1992.