Historical Examples

• The nucellus is a cellular tissue enveloping one large cell, the embryo-sac or macrospore.

  Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1

  Various

• The macrospore divides into two cells, a large lower one, and a smaller upper one.

  Elements of Structural and Systematic Botany

  Douglas Houghton Campbell

• But the formation of the macrospore or embryo-sac is simpler than the corresponding process in cryptogams.

  Scientific American Supplement, Vol. XXI., No. 531, March 6, 1886

  Various

• The larger ones contain each a large spore, or macrospore; the smaller contain numerous microspores, immersed in mucilage.

  The Elements of Botany

  Asa Gray