Taxonomic Revision of <i>Evolvulus</i> Sect. <i>Lagopodini</i> (Cresseae-Convolvulaceae)

Abstract— We provide a comprehensive taxonomic treatment for Evolvulus sect. Lagopodini that includes species with flowers congested in terminal inflorescences and bracts similar to sepals. In this section, we recognized five species distributed mainly in the Dry Forests and in the Brazilian Savanna of South America, with greater diversity in the Brazilian Savanna (three species). We analyzed around 550 sheets deposited in 42 herbaria, including types for all accepted names and synonyms. We propose two synonyms for E. pterygophyllus , one for E. niveus ; and lectotypes for E. lagopodioides , E. pterocaulon , E. pterocaulon var. flocosus , and a second-step lectotype for E. pterygophyllus . An identification key, complete descriptions, illustrations, distribution map, and preliminary conservation status assessment for all species are provided.