Hi Neal,
Looks like a Pterocactus kuntzei to me.

That is really a huge one. I had one of the same size but unfortenately it died last year.......

That is a beauty Ralph. I will sent you a p.m.

ralphrmartin wrote:Cracking plant. Want to do a swap for another Aylostera with stripey flowers?

Hi Ralph,
I have 2 other plants of this kind .....all are grafted....do you have a picture for me with the plant you would like to swap?
Best regards,
Pleun

Lovely sulco's Pete +Dave

First flower on my aylostera.

Just wanted to share this beautiful flower.
Sulcorebutia tarabucoensis v. callecallensis VZ056b

I take some plants with buds with me to my work, than I can enjoy the flowers anytime

A pleasure to watch ! Beautiful flowers !

I love your rebutias Sylvia, what a colourful sight, a real joy to see these beauties.
Keep posting pics !
Greetings from Holland.