Hi, Again!

What is confusing me is one Naiade web page that states
that P. grandis has white nacre (although I know many of
our local mussels come in various colors of nacre).

Except for the color of the nacre, I would be calling this
P. grandis.  I gather from the reply that I'm right, as
the shells fits the description all points except for the
nacre color.

Thanks,
Linda