Last updated on April 23, 2014 at 15:59 EDT
Sunflower stem vascular
272 of 430

Sunflower stem vascular

March 8, 2013
Scanning electron microscope image of longitudinal section of Helianthus annus [sunflower] stem showing area of vascular bundles. Asterales Asteraceae (sunflower family) Helianthus annus herbaceous dicotyledon Zeiss DSM 962 SEM Credit: Louisa Howard, Charles Daghlian