> I'm a purist and that's why I see the var. heterophylla as a > very asinine designation for the northern S. purpurea (all-green) > plants. > > Dave Evans
Actually, it's forma _heterophylla_, not var. _heterophylla_. I've seen
these in habitat, albeit in only one site. There the heterophylla form
was growing intermixed with the normal form, with evidence of intermediates.