Hi Charles,
thanks for comment.
the discover of such a biotope near home boost my microscopy observations.
more Micrasterias:
the first is likely M.crux-melitensis, but not sure...
That sure is a nice spot for microbe hunting. There will be many other interesting algae, protists and micro animals.
I don't think that is M crux melitensis. It looks like an anomality. I hope you can find one. Micrasterias jenneri is something special. It always looks a bit battered. I suspect it is has a wild character.