Getting Some Girth...

This was a hitchhiker in another plant's pot.  It took a while to root, but it is now putting on some girth!

Here's a description from Altman Plants (where this was originally grown according to the labels on the plants -

Chamaelobivia ‘Rose Quartz’ “Peanut Cactus”

Chamaelobivia 'Rose Quartz' is a hybrid (genetic combination) between Chamaecereus (“Peanut Cactus”) and Lobvia. This “peanut” cactus has an upright growth habit, offsetting and blooming profusely.