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Photographic gallery.  Thousands of particles under the microscope.
Sunflower (Helianthus annuus) Leaf Hair (Trichome) Under the Microscope

Helianthus annuus (Sunflower) Plant Hair

Both types of leaf hair are seen here, the pointed multicellular cystolithic hair above and the multicellular glandular hair at lower right.

Transmitted Circular Polarized Light Illumination


Helianthus annuus is the source of the common sunflower seeds.

Significance in the Environment:

Characteristic Features:

Associated Particles:


Uphof, J.C. Th., Karl Hummel, and Karin Staesche, PLANT HAIRS, Gebruder Borntraeger, Berlin, p. 215, 1962.