''Psychotria guerkeana'' is a species of plant in the family

Rubiaceae The Rubiaceae are a family of flowering plants, commonly known as the coffee, madder, or bedstraw family. It consists of terrestrial trees, shrubs, lianas, or herbs that are recognizable by simple, opposite leaves with interpetiolar stipules ...

. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

São Tomé Island São Tomé Island, at , is the largest island of São Tomé and Príncipe and is home in May 2018 to about 193,380 or 96% of the nation's population. The island is divided into six districts. It is located 2 km (1¼ miles) north of the ...

and is listed as vulnerable by the IUCN. It was named and described by

Karl Moritz Schumann Karl Moritz Schumann (17 June 1851 – 22 March 1904) was a German botanist. Schumann was born in Görlitz. He was curator of the Botanisches Museum in Berlin-Dahlem from 1880 until 1894. He also served as the first chairman of the ''Deutsc ...

.K.Schum., 1892 ''In: Bol. Soc. Brot. 10:'' 131

References

guerkeana Plants described in 1892 Flora of São Tomé Island Endemic flora of São Tomé and Príncipe Vulnerable plants Taxonomy articles created by Polbot {{Rubiaceae-stub