I had this species 50ty years ago. Grew it many years on a great variety of plants (Ficus, Citrus, Coleus, Begonia...)
It is used in Chinese and Ayurveda medicine which I did not know at this time.
Easy to propagate by vegetative means. I had it several years but it never set seed. So I finally lost it.
I like to have one again to grow from seed. Seeds are easy to come by in Asian countries I learned, but I could not find a source to send it to Europe.
Maybe someone in GB has a way to get seeds.
If I get seeds from another source I will post it here in case others are interested.