Stachytarpheta sericea Atkins (Verbenaceae) and its hybrid with S. chamissonis Walp.

Summary. The name Stachytarpheta sericea Loes. from Brazil is validated and a supposed hybrid form between S. sericea and S. chamissonis is investigated. The pollen morphology of the putative parents and hybrid is described. While curating and naming Verbenaceae specimens from Brazil, I came across four Stachytarpheta species, whose names had been published in 1911, but for which there were apparently no valid descriptions.