What is "dittoceras"

Dittoceras is a genus of plant in family Apocynaceae first described as a genus in 1883. They are native to the Himalayas and to southeast Asia.

1. Dittoceras andersonii Hook.f. - Sikkim in the Himalayas of NE India
2. Dittoceras garrettii Kerr - Thailand
3. Dittoceras maculatum Kerr - Thailand
4. Dittoceras stellaris (Ridl.) Bullock - Peninsular Malaysia