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Young stem

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Legend:

1  epidermis
3  parenchyma
4  cortex
5  sclerenchyma
primary phloem
primary xylem
9  pith
2  collenchyma
6  parenchyma

 
English name: Dutchman's pipe
Scientific name: Aristolochia sp.
Familia: Aristolochiaceae
Classis: Dicotyledonas
Phylum: Angiospermae
Regnum: Plantae
Young stem at the end of primary growth. A closed ring of cambium arises between xylem and phloem. This is the beginning of (secondary) growth

http://www.vcbio.science.ru.nl/en/image-gallery/show/PL0102/print/

last modified: 5 Jun 2014