This plant is low growing, and flowers better than most fragilis.
This low growing plant is from Dickinson.
This low growing plant is Dunn County, Wyoming. Started flowering when the bowl was filled, not before. As there is no Dunn County in Wyoming, but there is one in Wisconsin, this plant probably comes from Wisconsin (mixup from Wi to Wy?).
This low growing plant was acquired in Blankenberge. It might be true, or a hybrid. Quite floriferous.
This low growing plant is the northest growing cacti growing in the north of Alberta.
This low growing plant is growing in Hot Springs South Dakota. Small joints, decent flowerer.