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Showing 1 to 1 of 1 for “"Orbicules"”.
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Microspore Wall Morphogenesis and Orbicule Ultrastructure of <i>Isoetes</i>
… the genus, using scanning electron microscopy. Orbicules are minute granules of sporopollenin observed on the inner wall of the secretory tapetum and their function remains unknown. Ultrastructural variation in orbicules of the nine studied species was documented. Orbicules were very variable in …