Cactus ID Help

[Minime8484]

Hi all!
I recently obtained a few cacti which I can't quite pin down - all were received with no ID at all.

This first one is certainly a Coryphantha, but I'm not certain which:

Coryphantha B2.jpg (57.99 KiB) Viewed 583 times

Coryphantha B1.jpg (82.51 KiB) Viewed 583 times

The second is most certainly a Mammillaria, but again - unable to nail it down:

Mammillaria C1.jpg (50.71 KiB) Viewed 583 times

The third is confounding me...I'm thinking it might be Parodia werneri? But, not even sure about genus on this one:

Cactus A2.jpg (29.78 KiB) Viewed 583 times

Cactus A1.jpg (49.87 KiB) Viewed 583 times

Any help would be greatly appreciated!
Cheers,
Tristan

[DaveW]

The Mammillaria may be M. mystax. The spination (long central spines) are very variable on this species some plants have only short ones whereas some can be long and even curly:-

http://www.cactus-mall.com/mammsoc/mamm ... Nov11.html" onclick="window.open(this.href);return false;

http://www.flickriver.com/photos/_mm_/217624160/" onclick="window.open(this.href);return false;

https://www.flickr.com/photos/porch-photos/7680806706/" onclick="window.open(this.href);return false;

The Parodia is one of the ottonis group, not Notocactus uebelmannianus = Parodia werneri.

[CactusFanDan]

The third one looks like Parodia oxycostata.

[Minime8484]

Thanks all!
I think the Parodia is P. ottonis, but will be more sure when it grows up a bit.
You may be right on the Mammillaria; I've heard no other suggestions. It too may have to wait to grow up to confirm.

The Coryphantha hasn't gotten a nibble....but, I was thinking C. delaetiana/C.salmdyckinana...but, it bloomed today, and the reddish anthers are throwing me.
Anyone wanna take a stab now that there are flowers?

IMG_0063.JPG (84.77 KiB) Viewed 515 times

IMG_0064.JPG (63.68 KiB) Viewed 515 times

[vlani]

Cory salinensis I think

[Minime8484]

I think you are right! Thanks!!

[tumamoc]

I would have taken a shot at the Coryphantha ID, but I am tired of being wrong!