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Hairs and glandular cells in the upperepidermis of a petunia leaf
	- Large (82 Kb) - Scroll down to information Without labels Legend: 1 epidermal cells 3 multicelllular hair 4 secretory cells at the tip of a hair 2 stomata
English name: Petunia Scientific name: Petunia sp. Familia: Solanaceae Classis: Dicotyledonas Phylum: Angiospermae Regnum: Plantae
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