Back to Medium sized version | With labels
Hairs and glandular cells in the upperepidermis of a petunia leaf
1 epidermal cells
3 multicelllular hair
4 secretory cells at the tip of a hair
English name: Petunia
Scientific name: Petunia sp.
Hairs often occur at the surface of leaves as a protection against desiccation of pray. Hairs are elongated extensions (trichomes) of the epidermis. This particular hair of a petunia leaf is multicellular. At its top a secretion cell produces etherical oils that desists many organisms