''Rinorea dentata'', commonly known as kuntze, is a species of

plant Plants are predominantly Photosynthesis, photosynthetic eukaryotes of the Kingdom (biology), kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all curr ...

in the family

Violaceae Violaceae is a family of flowering plants established in 1802, consisting of about 1000 species in about 25 genera. It takes its name from the genus ''Viola'', the violets and pansies. Older classifications such as the Cronquist system placed ...

. It is found in the tropical rainforests of

Liberia Liberia (), officially the Republic of Liberia, is a country on the West African coast. It is bordered by Sierra Leone to its northwest, Guinea to its north, Ivory Coast to its east, and the Atlantic Ocean to its south and southwest. It ...

Nigeria Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of G ...

Cameroon Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west- central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; th ...

and

Uganda }), is a landlocked country in East Africa. The country is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the south by Tanzania. The south ...

. It is particularly common in the Omo Forest Reserve in

Ogun State Ogun State is a state in southwestern Nigeria. Created on 3 February 1976 from the former Western State. Ogun State borders Lagos State to the south, Oyo State and Osun State to the north, Ondo State to the east, and the Republic of Benin to the ...

, Nigeria.

Description

''Rinorea dentata'' is a large shrub or small tree growing up to high. It is an understorey tree growing in dense, shady locations in forests. The trunk is very hard, earning the plant the name “Oloboroho” (stone plant) in the

Yoruba language Yoruba (, ; Yor. '; Ajami: ) is a language spoken in West Africa, primarily in Southwestern and Central Nigeria. It is spoken by the ethnic Yoruba people. The number of Yoruba speakers is roughly 50 million, plus about 2 million second-language ...

Uses

The wood of this plant is used as a chewing stick for oral hygiene, and extracts have been used for anti-microbial and anti-malaria purposes as a folk remedy in humans, and as a veterinary remedy for aiding parturition in livestock. Researchers found that the plant contained novel

cyclotide In biochemistry, cyclotides are small, disulfide-rich peptides isolated from plants. Typically containing 28-37 amino acids, they are characterized by their head-to-tail cyclised peptide backbone and the interlocking arrangement of their three ...

s, but further research is needed on the efficacy of these extracts.

References

dentata {{Violaceae-stub