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Detail cross section of an old stem of castor bean
	- Large (81 Kb) - Scroll down to information With labels Legend: 1 epidermis 3 parenchyma 4 cambium 5 phelloderm 2 lenticel
English name: Castor bean Scientific name: Ricinus communis Familia: Euphorbiaceae Classis: Dicotyledonas Phylum: Angiospermae Regnum: Plantae
A lenticel is formed under a stoma, permitting gas exchange. The other parts of the surface are isolated by cork deposition

last modified: 5 Jun 2014