The correct name for Schumannianthus dichotomus (Marantaceae).

The genus Schumannianthus Gagnep. (Marantaceae) is typified by S. dichotomus Gagnep. This is a new genus and species for the material of Phrynium dichotomum auct. non Roxb. Phrynium dichotomum Roxb. and derivatives are superfluous names for Donax canniformis (G. Forst.) K. Schum. The correct name for S. dichotomus is Schumannianthus benthamianus (Kuntze) Veldkamp & I. M. Turner comb. nov. Lectotypes are designated for Arundastrum benthamianum Kuntze and Schumannianthus dichotomus Gagnep., and a second-step lectotypification is proposed for Thalia canniformis G. Forst. [ABSTRACT FROM AUTHOR]