What is "voacanga"

Voacanga is a genus of plants in the Apocynaceae family found in Africa, Southeast Asia, New Guinea, and Australia. the World Checklist of Selected Plant Families recognises 13 species:

1. Voacanga africana Stapf ex Scott-Elliot - tropical W + C + E + S Africa
2. Voacanga bracteata Stapf - tropical W + C Africa
3. Voacanga caudiflora Stapf - tropical W Africa
4. Voacanga chalotiana Pierre ex Stapf - tropical C Africa
5. Voacanga foetida ( Blume) Rolfe -Java, Borneo, Sumatra, Philippines
6. Voacanga globosa ( Blanco) Merr. - Philippines
7. Voacanga gracilipes ( Miq.) Markgr. - Maluku
8. Voacanga grandifolia (Miq.) Rolfe - Indonesia, Philippines, New Guinea, Queensland
9. Voacanga havilandii Ridl. - Sarawak
10. Voacanga megacarpa Merr. - Philippines
11. Voacanga pachyceras Leeuwenb. - Zaïre
12. Voacanga psilocalyx Pierre ex Stapf - Nigeria, Cameroon, Gabon, Republic of Congo
13. Voacanga thouarsii Roem. & Schult. Madagascar; widespread from Cape Province to Sudan + Senegal

1. Voacanga dichotoma = Tabernaemontana pachysiphon
2. Voacanga plumeriifolia = Tabernaemontana macrocarpa