SCIMAT / SCIENCE PHOTO LIBRARY SCIMAT / SCIENCE PHOTO LIBRARY
Colour-enhanced Scanning Electron Micrograph (SEM) showing three stomata in a hollow leaf of green onion (scallion, spring onion - Allium species). The stomata are openings in the leaf surface. They facilitate the gas exchange and regulate evaporation from the leaf. Image width: 174.3 micrometers. Magnification: 575x if the image is printed 10 cm wide.
Model release not required. Property release not required.