Moss Stems
by Science Photo Library
Title
Moss Stems
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Moss stems, light micrograph. Transverse section through stems of a cord moss (Polytrichum commune). The outside of the stems, the epidermis, is made up of thick-walled cells. Below the epidermis is a cortex made up of thin-walled cells. In the center of the stem is the axial cylinder. This consists of a core (hadrome) made up of large thickened cells thought to conduct water, and a thin outer layer (leptome) of thin-walled cells thought to conduct food. Magnification: x14 when printed at 10 centimetres wide.
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November 21st, 2019
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