![](http://www.alamy.com/thumbs/6/0A49DA30-1B50-46A6-907A-1252244BF29D/2ACG38H.jpg)
Water milfoil stem. Light micrograph of a transverse section through the stem of the aquatic whorled water milfoil (Myriophyllum verticillatum) plant.
Water milfoil stem. Light micrograph of a transverse section through the stem of the aquatic whorled water milfoil (Myriophyllum verticillatum) plant. All aquatic plants (hydrophytes) have a similar stem structure. The epidermis has a thin cuticle and is permeable to water. The vascular tissue (centre) acts as a cable to resist the movement of water. Below the outer endodermis (purple ring) is a ring of phloem (small dark blue cells) and an inner thin ring of xylem (large circles). The pith consists of large-celled parenchyma (deep blue). Magnification: x14 when printed 10 centimetres wide.
Size: 5705px × 4937px
Photo credit: © DR KEITH WHEELER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: angiosperm, angiosperms, aquatic, background, biological, biology, botanical, botany, bundle, cell, cells, cut, cut-, cut-outs, cuticle, cutout, cutouts, cytology, endodermis, flora, hydrophyte, hydrophytics, light, lm, micrograph, microscope, milfoil, myriophyllum, nature, outs, permeable, phloem, plant, section, sectioned, stem, structure, support, supportive, tissue, vascular, verticillatum, water, white, whorl, whorled, whorls, xylem