The rupture of the spore coats occurs adjacent to the opening in the exosporium.
The germinated cell emerges through this hole in the spore coat and then through the pre-existing aperture in the exosporium,
before eventually being released,
leaving behind a largely intact exosporium with an enlarged aperture (0.7e1.0 mm)
and coat shell. The formation of this aperture,
its function and its alignment with the spore coat is discussed.