Matucana calvescens (Kimnach & Hutchison) Buxb. in Krainz, Kakteen: CVb. 1973 Matucana calvescens (Kimnach & Hutchison) Buxb. in Krainz, Kakteen: CVb. 1973is new combination for Borzicactus calvescens Kimnach & Hutchison in Cact. Succ. J. (Los Angeles) 29: 112. 1957Taxon for this nameMatucana calvescens (Kimnach & Hutchison) Buxb.