Bas (1969): This subsection comprises all and only those species of Amanita sect. Lepidella with a universal veil that (1) is not submembranous or membranous and (2) does not having a thin external layer that is submembranous or membranous and (3) is not comprised of chains of cylindric to elongate-fusiform to narrowly clavate cells.
In other words, this subsection is defined to include those taxa not placed in the other three subsections defined by Bas.