Most grass embryos have a flap-like structure known as the epiblast.

大多数禾本科有状结构通常为外叶。

The mature embryo is corn posed of radicle, coleorhiza, plumule, coleoptile, scutellum and epiblast.That is the typical structure of the mature embryo of grass.

成有根、芽、盾、芽鞘、根鞘、外叶等典型禾本科植物成的结构。