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Fern (Marsilea quadrifolia) rhizome

Fern (Marsilea quadrifolia) rhizome

C024/9233

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Credit

DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY

Caption

Fern (Marsilea quadrifolia) rhizome. Light micrograph of a section through a rhizome from an aquatic fern. Rhizomes are modified stems of a plant that usually grow underground. The epidermis (outer layer, red) surrounds the vascular bundle, which consists of phloem sieve tube cells (blue), a ring of metaxylem vessels with large tracheids (white-blue) and the protoxylem (small vessels, white-red). At centre is the pericycle (blue) and pith (red). Magnification: x13 when printed 10 centimetres wide.

Release details

Model release not required. Property release not required.

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