Salas, Roberto M. creator Souza, Elnatan B. creator Cabral, Elsa Leonor creator text periodical abstract or summary bl. continuing spa Resumen Dos nuevas combinaciones en especies de la tribu Spermacoceae para Sudamérica son aquí presentadas: Spermacoce polygonifolia se transfiere al género Mitracarpus y S. perijaensis a Tobagoa. Se elige lectotipo para Tobagoa maleolens y neotipo para Diodia ottonis. Palabras clave: lectotipificación, Mitracarpus, Spermacoceae, Tobagoa. Abstract We present two new combinations in species of the Spermacoceae tribe from South America: Spermacoce polygonifolia is transferred to genus Mitracarpus and S. perijaensis to Tobagoa. We propose a lectotype for Tobagoa maleolens and neotype for Diodia ottonis. Key words: lectotypification, Mitracarpus, Spermacoceae, Tobagoa. Publicação on-line; 15 ref.; Summaries (En, Es) RUBIACEAE ESPÉCIE TAXONOMIA Rio de Janeiro-RJ Jardim Botanico do Rio de Janeiro 1935 2025-1576 0370-6583; 2175-7860 on-line BR2025000228 v. 66(3) p. 919-922; (2015) https://www.scielo.br/j/rod/a/JWC9xmrZW4wVbFXbwcYywfy/?format=pdf&lang=es https://www.scielo.br/j/rod/a/JWC9xmrZW4wVbFXbwcYywfy/?format=pdf&lang=es BR-BrBNA 250318 20250318103216.0 spa