Calyptranthera is a genus of plants in the family Apocynaceae, first described as a genus in 1996. The entire genus is endemic to Madagascar in the Indian Ocean. Species 1. \n* Calyptranthera baronii Klack. 2. \n* Calyptranthera brevicaudata Klack. 3. \n* Calyptranthera caudiclava (Choux) Klack. 4. \n* Calyptranthera filifera Klack. 5. \n* Calyptranthera gautieri Klack. 6. \n* Calyptranthera grandiflora Klack. 7. \n* Calyptranthera pubipetala Klack. 8. \n* Calyptranthera schatziana Klack. 9. \n* Calyptranthera sulphurea Klack. 10. \n* Calyptranthera villosa Klack. 11. \n* Calyptranthera viridiflava Ammann, L. Gaut. & Klack.