Continued floristic research in eastern Brazil requires the following
new combinations in the Sematophyllaceae: Sematophyllum fluminicola (M
ull. Hal.) W.R. Buck, S. leucostomum (Hampe) W.R. Buck, S. pulvinale (
Hampe) W.R. Buck, S. warmingii (Hampe) W.R. Buck, and Trichosteleum gl
aziovii (Hampe) W.R. Buck. Extensive new synonymy is proposed.