DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Stem of a Dracaena. Light micrograph of a cross- section through the stem of a Dracaena (Darcaena terminalis) of the Agavaceae (Monocotyledons). It has secondary thickening in its stem to form a ring of vascular bundles from a circular meristematic layer (usually this group of plants have only scattered vascular bundles). The agavareae family is used as a source of fibres.
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