Multiheaded turbinicarpus

Hi all, I wish to show you some turbis seedling showing an unusual behaviour. I noticed that some days ago during a repotting work. Only pseudomacrochele and krainzianus minimus presented about 10% of multiheaded plants. The other species are "normal".
2006 and 2007 seedling:







Rgds

That's pretty cool. Have you been able to work out what's causing this?

Lachy wrote:

That's pretty cool. Have you been able to work out what's causing this?

Hi Lachy, no I don't know, but it seems to be common also in my friend's plant....