Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The development of a gametophyte directly from a sporophyte without the occurrence of meiosis or spore formation.

from The Century Dictionary and Cyclopedia

  • n. In the higher cryptogams, the production of the prothallus immediately from the sporangium without the ordinary intervention of spores, or from the leaf itself, without either sporangium or spore.

Etymologies

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