This plant was originally posted here as Nautilocalyx pictus 'Lightning'. It is now clear that that name belongs to another plant, and that this one is in another genus entirely.
Drymonia has many interesting species, grown for both their unusual flowers (e.g. D. coccinea) and what is in some instances dramatic and beautiful foliage (e.g. D. variegata). A photo of the flower of D. macrophylla is also on this site.