The History and introduction of the Daurian Lily Liliumpensylvanicum and the new combination L.pensylvanicum var. alpinum (Liliaceae).

Manuscripts in the Archives of the Academy of Sciences in St. Petersburg reveal the first recorded observations and introductions of Liliumpensylvanicum Ker-Gawl. from Siberia to European Russia. The naming of Liliumpensylvanicum and its attempted renaming to L.dauricum Ker-Gawl. is fully outlined. Lectotypes are designated here for the names Liliumpseudodahuricum M.Fedoss. & S.Fedoss., L.dauricumvar.alpinum N.I.Kuznetsov and L.pensylvanicumf.praecox Vrishcz. The new combination L.pensylvanicumvar.alpinum (N.I.Kuznetsov) J.Compton & Sytin is made and a key is provided to the varieties of L.pensylvanicum .