Gaultheria bracteata pollen (from Luteyn & Cotton 11307). Left: pollen tetrad in polar view; center: equatorial view (bar for both left and center photos = 10 µm); right: close-up of mesocolpial region (bar = 1 µm). Redrawn from Flora Neotropica Monographs 66: 392, fig. 6J-L. 1995.