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Cross-section of a young stem of castor bean
![](/public/Final-Images/PL_Final685z_101-150/PL0140_685zStemRicinusYoungCrossDetail.jpg)
Legend:
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.