South Africa is just one region of Africa, and I have no doubt that South Africa as a country and Africa as a continent both are rich with amazing psychoactive plants.
Among what I know is Psilocybe natalensis from South Africa and Datura metel growing and utilized in cultural rituals in northern Africa. Tried to look it up now but only came upon Datura stramonium which apparently is common in south Africa. That species was really meant to spread it seems.
About ubulawu, are you referring to Silene capensis or another species? There are countless species of Silene in the country I live (Turkey), and if I remember correctly, all have saponins which are the components of Silene capensis to which it's psychoactivity is attributed. Makes me wonder if similar effects can be achieved any of these local species.
Speaking of saponins, Asparagus acutifolius roots are rich in them and in my experience are psychedelic as can be especially when consumed fresh, chewed in a similar fashion to Silene roots. And it should be found in northern Africa.
And what about brooms (spartium, cytisus etc) in the fabaceae family, which have among other components, cytisine? Spartium junceum flowers are the most potent dream enhancers and the beans are very magically psychedelic in my experience.
Congratulations on your book. I tried to look it up but the link did not work.
The consciousness of plants is a constant source of information for medicine, alimentation, and art, and an example of the intelligence and creative imagination of nature. Much of my education I owe to the intelligence of these great teachers. Thus I consider myself to be the “representative” of plants, and for this reason I assert that if they cut down the trees and burn what’s left of the rainforests, it is the same as burning a whole library of books without ever having read them.
~ Pablo Amaringo