What is "odontanthera"

Odontanthera is a species of plants in the Apocynaceae first described as a genus in 1883. It contains only one recognized species, Odontanthera radians, a rare plant native to the shores of the Red Sea.

moved to other genera ( Conomitra, Glossonema)

1. O. boveana now Glossonema boveanum
2. O. linearis now Conomitra linearis
3. O. thruppii now Glossonema thruppii
4. O. varians now Glossonema varians