Apospory
the development of a gametophyte from a sporophyte without meiosis.
historical examples
this phenomenon of apospory was first discovered in mosses, but is now also known in a number of ferns (see pteridophyta).
encyclopaedia britannica, 11th edition, volume 4, part 3 various
noun
(botany) development of the gametophyte from the sporophyte without the formation of spores
the development of an embryo of a flowering plant outside the embryo sac, from a cell of the nucellus or chalaza
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