Semiramisia alata.  A: habit, portion of stem showing cross sections of stem and leaf.  B: upper portion of stem showing post-anthesis inflorescence.  C: corolla.  D: calyx, side view.  E: calyx, top view.  F: stamens with inset of dehiscence clefts (Cleef 5034, type).  Reproduced from Systematic Botany 9(3): 362, fig. 2.  1984.