Then look for them on GRIN, which, as I already said, is more comprehensive. It does list Anemone rivularis.
http://www.ars-grin.gov/cgi-bi...
It also recategorizes all Pulsatilla species as Anemone species, with the exception of two (including P. turczaninovii), but it says those two also belong in Anemone. Their placement has not been decided yet, but it eventually will be decided.
