And a beautiful flower it is.

Al

Very nice indeed Steve, I love the flower colour. Another one I've never seen over here.

CP

Thanks for the beautiful photo!
Now i have a full name for one of my Pterocactus:)

-Magnus

The root system of this cactus is very tuberous. I have slowly lifted the roots up over the years so they are exposed rather like a caudiciform plant. I have problems fitting in any soil when I repot it owing to the size of the roots (not wanting to use a larger pot).

Here is a view of the lifted roots.

Here is a link that might be useful: {{gwi:492017}}

This is a beautiful species! My plants broke their pot into pieces one year after I grew them from unrooted cuttings. I can't wait till mine blooms.
Pieter