Cavendisia isernii.  A: habit.  B: flower showing pedicel and calyx.  C-E, calyces from different plants.  F: bracteole with large distal callose-thickened gland (A-B and F, var. isernii from Luteyn & Lebrón-Luteyn 5674;  C-E, var. pseudospicata, C from Asplund 19694, D from Harling 11042, and E from M. Lugo 70).  Reproduced from Flora Neotropica Monogrph 35: 111, fig. 46.  1983.