megasporophyll

• Substantif désignant une feuille modifiée ou une structure foliacée chez certaines plantes non fleuries, qui ne porte que des méga-sporanges.

A noun referring to a modified leaf or leaf-like structure in certain non-flowering plants that bears only megasporangia.

1. Reproductive leaf in non-flowering plantsC2formalscientific

   A modified leaf (sporophyll) that bears only megasporangia, which produce female spores (megaspores) in certain non-flowering plants like ferns and gymnosperms.

   mégasporophylle

   • In cycads, the megasporophyll is a large, leaf-like structure that bears ovules.
   • The megasporophyll of a fern is distinct from the microsporophyll, which produces male spores.
   • Botanists study the arrangement of megasporophylls to classify ancient plant species.