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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A union of pollen microspores.

from The Century Dictionary and Cyclopedia

  • In botany: In the Filicine┼ô, a mass of hardened frothy mucilage inclosing a group of microspores.
  • In phanerogams, a group of cohering pollen-grains that have been produced by one primary mother-cell.


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