Taxonomic novelties in South American species of Gutierrezia (Asteraceae, Astereae)

During the revision of South American species of Gutierrezia (Asteraceae, Astereae) taxonomic novelties were established: (1) two new varieties were described, Gutierrezia mandonii var. anomala from northwestern Argentina, and Gutierrezia isernii var. nivea from central and western Argentina; and (2) the species Gutierrezia pulviniformis was included as a new synonym of Gutierrezia spathulata.