I vote for 'elongata'.

Al

Here is a link that might be useful: {{gwi:464118}}

Definitely not M. pottsii.

I'd say neither but I don't have a good alternative to offer.

I'm almost sure I saw that plant somewhere recently with a different ID.

Hey, I have one of these in flower now and was wondering what it was too.

Kathy

I don't know about the elongata - aren't they usually much smaller in diameter? Or maybe I'm just thinking that these are hefty fellers because it's a closeup. But also, the spination on elongata is a bit different - don't the spines grow in more of a star or flower shape, without any spikies sticking straight out? This one appears to have spikies sticking straight out...

Shelly

Does elongata have such stout centrals?
Also isnt the spine colour normally yellow?

I vote for Mammillaria elongata ssp elongata. There are so many variations, both in color and in spination. Mine started out with no to very few central spines, but older it got, more it had. It is in a 5" pot. Sorry for the lack of quality in photo on mine.

Here is a link that might be useful: Mammillaria elongata ssp elongata

OK, so I have a pup that was labelled elongata,yet it has no centrals like those shown!

{{gwi:464119}}

{{gwi:464120}}

That's definitely an elongata, Larry (and a cutesy it is, too!) But anya's saying that there are variations. That's a lovely plant, anya - I've never seen an elongata like that!

Shelly

Its not quite rooted yet and it has produced a new set of spines, amazing little thing!

Thanks Shelly...
Here is a link that will show you all just how much of a variety there is in it. some are pure, some are crossed, but for the most part, it will show you some of the diversity.

Rose

Here is a link that might be useful: Mammillarias.net- elongata

Hi,
According to me this is a cross between M. elongata and M. microhelia. A pure M. elongata has cream colored flowers, not pink ones. This plant is too thin to be a pure M. microhelia I think. This elongata X microhelia cross is quite common in culture.
Pieter

Mammillarias.net?!!? Try Heaven.yay!

Thanks for the link,
Shelly