What is "pleurostelma"

Pleurostelma is a genus of plants in the Apocynaceae, first described in 1890. It is native to Africa, including Madagascar.

1. Pleurostelma cernuum (Decne.) Bullock - Madagascar, Pemba Island (Green Island) in Tanzania
2. Pleurostelma schimperi (Vatke) Liede - Ethiopia

transferred to Tacazzea

• Pleurostelma africanum Schltr., synonym of Tacazzea africana (Schltr.) N.E.Br.