One of the few south American genus I've got. I really like the spines and the green suede skin on some.
G. anitsii (I think) - this will NOT grow in direct sun for me. It has to be less than 50% shade or it just shrivels up. Weird - not one of my favorites.
G. bayrianum - awesome spines and great green suede skin. One of my favorites.
G. bodenbenderianum - I dig the spines! I fought mealies on this for a while. Persistent buggers...
G. bruschii - when you have one G. bruschii you soon have several!
G. bruschii 2
G. bruschii 3
G. bruschii 4
G. denudatum - from M2G, was previously favored by hungry rodents.
G. horstii
G. horstii 2
G. horstii 3 - an offset from a plant I subsequently killed. I don't like the looks of that brown scab, though.
G. horstii 4 - this was the mother for the first two plants. Kind of ugly but it keeps squirting out offsets as separate plants from below.
I have another large G. horstii that I must have missed with the camera. I'm pretty sure I missed at least one G. bruschii too.
G. joosensianum - this has been reduced beneath some other species, but I don't buy it. I'll keep this name. I got this at a CACSS silent auction a few years ago and it does NOT react well to being repotted. It takes months for it to recover. It's doing well now, so I'll leave it alone until the pot is waaaay too small.
G. mesopotamicum - this cranks out tons of white flowers in the spring. I bought this in a 3.5" pot two years ago. It had split dichotomously into 4 heads then offset like mad.
I have two other smaller G. mesopotamicum that I neglected to take pictures of.
G. netralianum - had this for 2.5 years. It's been sunburnt and abused by rodents in the past but is doing well now.
G. pentlandii - same story as the one above.
G. saglionis
G. vatterii - another one that has been reduced, again, I don't buy it. Great spines!
![Image](http://www.cactiguide.com/forum/userpix/1079_G_vatterii_3.jpg)
Disclaimer: I'm in sunny Arizona, so any advice I give may not apply in your circumstances.
Tim