I have found a large, wild patch, some 200m long, of mainly Datura Stramonium, in our street. I have always been keenly interested and well read on the shamanic, and - very rare - medicinal uses of this species, but scattered amongst them, like family, are two other plants I don't know, but am convinced are also some kind of Datura. I would please like some help on identifying the other two based on the two photos I have of all three.
This is the well known - to me - Stramonium flower, the plant characterized by jagged leaves and the well known spiked seed pod of Jimson Weed seeds.
It looks like user29734's answer is correct, and the above is Morning Glory, but of course subject to confirmation. I now do recognize at least the purple flower as Morning Glory, but from some 30 odd years ago. And it now looks like what I confused with Datura Alba is really just another colour flower of the Morning Glory.
If anyone could please confirm my ID of the Stramonium, and confirm the identification of the second image as morning glory, and suggest what species.
These plants are all around my neighbourhood, with is the northern part of Randburg, South Africa. This city borders on the Northern side of Johannesburg. 1 It's a temperate climate, with very hot and rainy summers, and bitterly cold and dry winters. The soil is reddish and lacks much humus.
It is a semi-rural area, having been rapidly urbanised over the last ten or so years, when it was still just farms and small holdings. Farming is mainly vegetables or lucerne; and lots of maize further out from the city. We are a few km south of the Cradle of Humankind.
1 Strangely enough, there are two cities in the US with the same names, both in California, I believe. I know Johannesburg is.