Opuntia megacantha var. lasiacantha (Pfeiff.) A.Berger in Bot. Jahrb. Syst. 36: 453. 1905 Opuntia megacantha var. lasiacantha (Pfeiff.) A.Berger in Bot. Jahrb. Syst. 36: 453. 1905is new combination for Opuntia lasiacantha Pfeiff., Enum. Diagn. Cact.: 160. 1837Taxon for this nameOpuntia megacantha var. lasiacantha (Pfeiff.) A.Berger