A revised key to the Warneckea species of Cameroon, and description of Warneckea ngutiensis (Melastomataceae-Olisbeoideae), a new Critically Endangered rainforest shrub

Warneckea ngutiensis R. D. Stone sp. nov. (Melastomataceae-Olisbeoideae) is described from near Nguti in SW Region, Cameroon. Unique in section Strychnoides in having only a vestigial staminal oil gland, this rainforest shrub is Critically Endangered due to an oil palm plantation project.