What is "cosmostigma"

Cosmostigma is a genus of plants in the Apocynaceae, first described as a genus in 1834. It is native to tropical and subtropical Asia.

1. Cosmostigma cordatum (Poir.) M.R.Almeida - India, Sri Lanka
2. Cosmostigma hainanense Tsiang - Hainan Province in China
3. Cosmostigma philippinense Schltr. - Philippines