Here is a picture of one that I bought. It looks like a kotschie, but not sure exactly what it is.

Hey Peter, Yeah I can see the seeds in there too. I didn't think they would be ripe that fast. I heard the fruit tastes good. I might try some later.

Looks really cool, but I do not know what that is. Sorry I couldn't be of more help.

If you want some good pictures for comparison. My friend showed me this page. I find it useful for ID.
http://flickr.com/photos/msscacti

Same one that was in bloom.

I just got these today.

One of my williamsiis. It is fruiting too.

Nice flowers, looks almost like a lotus.

Wow sweet job! Your setup is the envy of many cactus growers.

Ohh I love reptiles and spiders. Great pictures!!

Nice additions! Love the Suclorebutia/Rebutia mariana, those spines look awesome.

Sweet thanks for the heads up. That is good advice.

One of my mature Williamsiis are fruiting. This is the first time I tried pollination, and it worked nicely. The fruit is forming right now, how long will it take before I can harvest it? Should I stop watering, or can I continue normal watering?

Excellent photos, growing from seeds needs alot of patience and love. I have tons of seeds that need to be planted, but I need to wait until I move out of the NE. I have some ariocarpus (kotschies, bravos, and fissuratus.) Also some trichocereus peruvians, bridgesii and geometrizans. And some L. dif...

Mmmm nice flowers. Thanks for sharing.