lenticel
Quick Summary
A lenticel is a loose aggregation of cells that penetrates the surface of woody plants, such as stems. These structures allow for the exchange of gases between the atmosphere and the underlying tissues of the plant. Lenticels are essentially pores that facilitate respiration in woody stems and roots. The term "lenticellate" describes something that has or produces lenticels. This is distinct from stomata, which are microscopic openings found on leaves and young stems that also regulate gas exchange but are surrounded by specialized guard cells.123
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