Oleander stem. Light micrograph of a cross-section through the stem of an oleander (Nerium oleander) tree. The outer cortex (red) is made of collenchy

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Oleander stem. Light micrograph of a cross-section through the stem of an oleander (Nerium oleander) tree. The outer cortex (red) is made of collenchyma and the lower cortex has a ring of bundles of phloem fibres (pale yellow) among which is phloem with sieve tubes (dark red). Under the phloem is a ring of cambium (dark red) and under this a thick ring of wood (yellow and pink). The solid pith (centre, red) is composed of large parenchyma cells. Magnification: x11 when printed 10 centimetres wide.

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Size: 4524px × 4630px
Photo credit: © DR KEITH WHEELER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: anatomical, anatomy, angiosperm, angiosperms, background, bark, biological, biology, botanical, botany, cells, circle, circular, cortex, cross, cross-section, cut, cut-, cut-outs, cutout, cutouts, dicot, dicotyledon, flora, internal, light, micrograph, microscope, nature, nerium, oleander, outs, phloem, pith, plant, plants, section, sectioned, slice, sliced, stem, structure, structures, tissue, tissues, transverse, vascular, vessel, vessels, white, woody, xylem