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Cross-section of a young stem of castor bean

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1  epidermis
3  parenchyma
4  phloem
5  fascicular cambium
7  xylem
8  pith
2  collenchyma
6  interfascicular cambium

English name: castor bean
Scientific name: Ricinus communis
Familia: Euphorbiaceae
Classis: Dicotyledonas
Phylum: Angiospermae
Regnum: Plantae
At the end of primary growth fascicular (between xylem and phloem) cambium is built, which leads to the formation of a ring of cambium in the cortex. View a detail of the cambium at this stage.

last modified: 5 Jun 2014