Some Mammillari in bloom to ID

Hello, some Mamms to id
1


2


3


4


5


6 M.heyderii ssp?

Olla!
1. M.vagaspina
2. M.formosa sp.
5. M.spinosisima
6. M. hayderi or Porfiria schwarzii (M.choahuillensis) ???

dr.Muu

I would agreed with the above and offter for No 3. something in the stylothelae, M.bocasana ?

I would suggest that 3 could be bocasana eschauzieri, and 4 nunezii.

No 4. possibly nunezii also duoformis comes to mind, but yes something in the Polyacanthae.

Thak you all!!
just another 2 questions
I bought the n°2 labeled "M.pseudoperbella" , what differences are between this and M.formosa?
The N° 4 A friend of mine have a plant very similar labeled albrechtiana, can it be the same?

No. 4 could be M albrechtiana has it is also in the polyacanthae, sometimes placed under M.rekoi rekoi.

I will post a photo of formosa and pseudoperbella side by side on Monday.