Beautiful cacti Al! I'd say that last ID is correct. Love your Steno too. Gorgeous flowers.

Jen

Beautiful display!
And Id say yes that is hahniana,mine is coming into bloom now too!

{{gwi:468868}}

That M. hahniana looks to be a good size. 15cm wide?

Should be something close to that, probably a couple of cm less.

Very nice set of flowers on those plants. I especially like the Thelocactus.

They are all very nice. Thanks for sharing.