Alcea x nadezhdae nothosp. nova (Malvaceae), a new nothospecies from Western Altai (Russia)
A new nothospecies Alcea x nadezhdae A. V. Grebenjuk is described. It has originated from putative hybridization between a Western Altai endemic species A. frolowiana (Litv.) Iljin and a cultivated species A. rosea L. The choice of the orthographic variant of the A. frolowiana epithet was restored according to that accepted in the protologue.