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Transverse section of the stem of a one year-old elderberry
Legend:
1 lenticel
3 xylem
4 pith
2 bark
English name: Elderberry
Scientific name: Sambucus sp.
Familia: Caprifoliaceae
Classis: Dicotyledonas
Phylum: Angiospermae
Regnum: Plantae
the cork, deposited by cork cambium under the epidermis, takes over the protective function of the epidermis. In the area where a stoma was present a lenticel has developed that provides a functional replacement for the stoma (gas exchange)