This species is known to be from central and southern Cameroon and Equatorial Guinea, south to southern Gabon (M. Burger pers. comm.) and from northern Democratic Republic of the Congo (Penner and Rödel 2007). It presumably occurs in Central African Republic and Congo and these are included in the species distribution on the map. The subspecies Cardioglossa gratiosa paternageli has been described from Minim in the Adamawa Plateau of Cameroon, indicating that the animals from the uplands in the northern part of the range of this species perhaps belong to a different subspecies. It presumably occurs up to at least 1,200 m asl, perhaps higher.
Habitat and Ecology
It lives in lowland secondary forest and heavily degraded former forest. It is typically found around small, clear streams that do not flow too fast, but can also be found in raphia swamps and marshy secondary bush criss-crossed with tiny water courses. In one study, it moved rapidly into a new forest clearing, but had disappeared within three years as the forest regenerated. It breeds in streams and males call from secluded positions among dead leaves and root systems.
It is widespread but not common around Yaounde.
It presumably occurs in several protected areas.
IUCN SSC Amphibian Specialist Group 2013. Cardioglossa gratiosa. In: IUCN 2014