Need help ( again)

The labels are not correct
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Hi Sonja,
1. is another of those magnimamma forms but which I'm not sure.
2. I am not sure about this one either, perhaps one of the forms of voburnensis?
3. I think is karwinskiana ssp nejapensis, as I can't see a central spine, but if it has then pobably ssp. beiselii
4. looks to me like hertrichiana, and it could be the Lau 086 form which some have referred to standleyi. It looks like it has had red flowers, which also seems right for this species.
5. certainly a wrong label on this, but what it is doesn't come to mind, sorry.
I think we need Hugo on these!

n° 1: seitziana is correct, mostly one or sometimes 2 central spines, the lowest the longest, 10 to 40 mm long. 3-5 radial spines, 2 - 15 mm long. Flower colour: pink with darker carmine midstripes.

n° 2: I would go for M. nagliana, but these are dividing dichotomously and are not making sprouts like yours.

n° 3: I agree with Chris: nejapensis.

N° 4: agree with Chris again: hertrichiana

n° 5: I doubt between a few species ( tayloriorum or pseudoscrippsiana). Could you remember the flower colour Sonja?

That's why I tended towards the voburnensis forms rather than the karwinskiana ones, but it's not easy!
And I'd agree with you on scrippsiana rather than tayloriorum.

I think it has not flowered this year

Oké Sonja,
It could certainly not be santaclarensis like written on your label. Santaclarensis is an old name for a barbata form and your plant doesn't look like barbata at all. By the way, were are all these unknowed plants came from?

Almost all from seed from cactusclub Wijnegem, It was a real mess what they sold, that time. Also a few plants from Werner Wittesaele. The plants do look nice but it's sometimes frustrating when they have not the correct name.
Here's one with on the label Hertrichiana, but the colour of spination is different, further on, they look very similar.

It is probably M. hertrichiana. I have got very similar one. I wonder what do you think about this plant?

I think hertrichiana too, I have a similar plant as well.

Sonja have send me some better pictures. From picture 2 above, plant left:



from picture 2 above plant on the right:



OK, this cleared up some things. I go for eichlamii. A spine count fits to description, flowers fits to description and it's making sprouts instead of dividing dichotomously. So it must be eichlami.
Now for your other plant on the right side of picture 2: It was labeled with the same name for a totally different plant.
For the same reasons as for eichlamii except the sprouts (spine count etc) I'll go for bocensis.

Thanks everybody for their help, I know it's not easy to ID plants from photo's