I'm curious how a striped "umbrata" would related to a plicata. The
only thing I see that distinguishes this one from many of the plicatas which
have stripes reaching across the central area is that the edges are slightly
pale. This seems common in this type of "plicata" (derived from I.
variegata ancestry??), and often much better developed. It seems to me
that it might be a modification of the plicata pattern in which the edges are
pale, rather than something totally different?