Stachytarpheta, Vahl, 1804

Cardoso, Pedro Henrique, Valério, Vanessa Imaculada Dos Reis, Neto, Luiz Menini & Salimena, Fátima Regina Gonçalves, 2021, Verbenaceae in Espírito Santo, Brazil: richness, patterns of geographic distribution and conservation, Phytotaxa 484 (1), pp. 1-43 : 7

2. Androecium with 2 fertile stamens and 2 staminodes..........................................................................................10. Stachytarpheta

2’. Androecium with 4 fertile stamens, 1 staminode present or absent.