Alexander umbel flower stalk, micrograph

Alexander umbel flower stalk, micrograph

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Caption: Alexander umbel flower stalk. Light micrograph of a section through the umbel flower stalk of an Alexander (Smymium olusatrum) plant. This is a compound umbel, showing the primary umbel stalks (centre and radiating outwards) and the seven secondary stalks, each bearing a flower around the periphery of the section. There are four stalks, each with 5 ridges and 5 vascular bundles. They are all compound umbels with pedicles (stalks) leading to each minute flower (top left). There are 5 anthers (centre right) and 4 pollen sacs (red) in each flower. There are 5 sepals enclosing or opening the flower. The ovaries are 2-celled and each contains one ovule (bottom right and left). The minute styles are at the top of each ovary. Magnification: x5, when printed 10.

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Keywords: alexander, anatomical, anatomy, angiosperm, angiosperms, anther, anthers, biological, biology, botanical, botany, bundles, cell, cells, compound umbel, female, flora, flower, flowers, histological, histology, inflorescence, light micrograph, male, microscope, nature, ovaries, ovary, ovule, part, parts, pedicle, pedicles, plant, plants, pollen sac, primary stalk, reproductive structure, sacs, secondary stalks, section, sectioned, sepal, sepals, smymium olusatrum, stalk, stalks, structure, style, styles, tissue, tissues, transverse, umbel, umbellifer, umbelliferous, vascular bundle, white background, wildlife

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