Botanical name: Alstonia venenata
Common names: Sinnappalai, Devil Tree
Family: Apocynaceae
Origin: India
Medium shrub, clusters of white flowers.
The indole alkaloid venenatine exhibited antifungal activity against some plant pathogenic and saprophytic fungi. The Tantra-cult in India utilises the seeds of Alstonia venenata as an aphrodisiac and stimulant in their tantric sex rituals.
Similar plants: Alstonia venenata (Sinnappalai)
Link to this plant:
https://toptropicals.com/catalog/uid/alstonia_venenata.htm