St. John's wort bud, light micrograph

St. John's wort bud, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: St. John's wort flower bud. Light micrograph of a section through a St. John's wort (Hypericum perforatum) flower bud. From outer to centre: five sepals (green); five petals (green); numerous anthers, each with four pollen sacs full of pollen (red); pistil and style (green). Magnification: x3, when printed 10 centimetres wide.

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Keywords: anatomical, anatomy, angiosperm, angiosperms, anther, anthers, biological, biology, botanical, botany, cell, cells, flora, flower bud, histological, histology, hypericum perforatum, light micrograph, microscope, nature, part, parts, petal, petals, pistil, plant, plants, pollen sac, reproductive structure, sacs, section, sectioned, sepal, sepals, st john'ss wort, structure, style, tissue, tissues, transverse, white background, wildlife

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