I think it is save to say that the Echinocactus grusonii is the most famous cactus of all. Not only because it’s easy to recognise, but also because it attracts people who don’t have a cactus hobby. My cactus collection started with an Echinocactus grusonii and it has been the easiest one of all.
Now, DNA research has shown that the genus Echinocactus is actually an hotchpotch of species who don’t belong in one same group. Joël Lodé wrote this in the french magazine ‘International cactus aventures’. The plant is more related to the Ferocactus than to the other Echinocactus-species.
Joël Lodé chose to give the Echinocactus grusonii a new status in the form of a new genus. From now on it will be called Kroenleinia grusonii. I’m not going to do anything with it though. DNA researches are expensive and time-consuming. The chances are (if I’m ever able to remember this namechange) new researchers will conclude other information in a couple of years.