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Old stem
	- Large (179 Kb) - Scroll down to information With labels Legend: 1 cork 3 sclerenchyma 4 phloem 5 xylem 7 pith 2 cortex 6 ray
English name: Dutchman's pipe Scientific name: Aristolochia sp. Familia: Aristolochiaceae Classis: Dicotyledonas Phylum: Angiospermae Regnum: Plantae
Cross-section through an old stem with secondary growth. A vascular cambium has been formed which deposits xylem (to the internal side) and phloem (to the external side). The cork cambium under the epidermis forms cork to the outside.