Demosthenesia vilcabambensis.  A: habit.  B: stamen, ventral view.  C: filament and lower portion of stamen, dorsal view, showing pubescence and connective (A from Dudley 10840 & 10841;  B-C from Dudley 10840).  Redrawn from Brittonia 30(4): 437, fig. 16.  1978.