Oleander (Nerium oleander) leaf, LM

  • Kevin Mackenzie, University of Aberdeen
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Attribution 4.0 International (CC BY 4.0)

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Oleander (Nerium oleander) leaf, LM. Kevin Mackenzie, University of Aberdeen. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.

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Description

Cross section through the midrib of an Oleander (Nerium oleander) leaf. The xylem (stained purple) and phloem vessels are visible in the centre. Water is carried up the stem and into the leaves by xylem vessels whilst the phloem supplies nutrients. Oleander is a highly toxic plant native to the Mediterranean and is poisonous to humans, pets, livestock and birds. Despite this danger, the leaves and seeds have been used in alternative medicines to treat heart conditions, cancers, ulcers and skin conditions. Width of image is 5 mm.

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