What is "stigmatorhynchus"

Stigmatorhynchus is a genus of plants in the Apocynaceae, first described as a genus in 1913. It is native to Africa.

1. Stigmatorhynchus hereroensis Schltr. - Damaraland region of Namibia
2. Stigmatorhynchus steleostigma (K. Schum.) Schltr. - Somalia
3. Stigmatorhynchus umbelliferus (K. Schum.) Schltr. - Tanzania