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Old stem


1  cork
3  sclerenchyma
4  phloem
5  xylem
7  pith
2  cortex
6  ray

English name: Dutchman's pipe
Scientific name: Aristolochia sp.
Familia: Aristolochiaceae
Classis: Dicotyledonas
Phylum: Angiospermae
Regnum: Plantae

Cross-section through an old stem with secondary growth. A vascular cambium has been formed which deposits xylem (to the internal side) and phloem (to the external side). The cork cambium under the epidermis forms cork to the outside.

last modified: 5 Jun 2014