What is "pentacyphus"

Pentacyphus is a genus of plants in thefamily Apocynaceae, first described as a genus in 1906. It is native to South America.

1. Pentacyphus andinus (Ball) Liede - Peru
2. Pentacyphus lehmannii (Schltr.) Liede - Colombia, Ecuador

Pentacyphus tamanus (Morillo) Liede, synonym of Tetraphysa tamana Morillo - Venezuela