Adenia glauca – a vining caudiciform with tons of little yellow flowers coming for spring.
Not only does it have a very solid caudex, it also grows a substantial below ground taproot. Such efficiency in a succulent! We do recommend keeping it indoor, or at least bringing it indoor if the temp is going to drop below 45F.
These are from the Northern, drier parts of South Africa. Not so much a winter-rainfall area as the Southern parts of the country.
You can actually grow this plant from cuttings, near the caudex, but you probably won’t get a new caudex out of it. Still, it is a pretty vine with pretty flowers.