spiraperturate

English

Adjective

spiraperturate (not comparable)

  1. (botany, of a pollen grain) Having a an aperture that is spiral in shape.
    • 1991, Armen Leonovich Takhtadzhi͡an, Evolutionary Trends in Flowering Plants, Columbia University Press, →ISBN, page 149:
      […] (spiraperturate pollen grains). Spiraperturate pollen grains are found in some liliopsids, such as Lomandra, Aphyllanthes , and Eriocaulaceae. A modified type of the spiraperturate pollen grain is observed in Baxteria […]
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