American Lotus, (Nelumbo lutea)
This morning I found these water drops on top of a newly emerged Lotus leaf. This tendency to form water drops is known as the “Lotus Effect.” An article in Wikipedia says:
The lotus effect refers to the very high water repellency (superhydrophobicity) exhibited by the leaves of the lotus flower (Nelumbo). Dirt particles are picked up by water droplets due to a complex micro- and nanoscopic architecture of the surface, which minimizes adhesion.
This effect can easily be demonstrated in many other plants, for example tropaeolum, cane and columbine, and on the wings of certain insects.