Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having the sporangium destitute of a ring; said of certain genera of ferns.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having the sporangium destitute of a ring; -- said of certain genera of ferns.

from The Century Dictionary and Cyclopedia

  • In botany, without a ring: applied to those ferns in which the sporangium is without the elastic ring or annulus.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

ex- +‎ annulate

Examples

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