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Cross-section of an old stem of castor bean
Legend:
1 lenticells
3 collenchyma
4 parenchyma
5 phloem primary/secondary
7 secondary xylem
8 parenchyma rays
9 primary xylem
2 epidermis
6 vascular cambium
English name: castor bean
Scientific name: Ricinus communis
Familia: Euphorbiaceae
Classis: Dicotyledonas
Phylum: Angiospermae
Regnum: Plantae
Fascicular cambium forms xylem to the internal side and phloem to the external side. Alignment of cells in rows is typical for tissue of secondary origin (secondary growth). View a detail of cambium at this stage.
