Scanning electron microscope image of Helianthus annuus (sunflower) stem epidermal surface, showing a trichome (finger-like projection) and a stomata (pore used for gas exchange). This image is part of a group on botanical stems (CIL:40378-40395).
Biological Process: Epidermis morphogenesis, Respiratory gaseous exchange
Image collected on a Zeiss DSM 962 SEM. Complete specimen preparation protocol available at:
Author: Louisa Howard
Source: The Cell: An Image Library