Nice Lobivia hybrid. What are the parents? I'd guess L. arachnacantha is one of them.

I find this is not the easiest plant. It can scorch if too hot, but doesn't like deep shade either. It's also pretty slow. So, I suggest dappled sun, and not to overdo the water. Most of my Crassulas get some water all year round.

Ralph

I really must come and see your plants...

... it still comes down to the personal opinion of the classifier as to how they interpret the data, and sometimes which data to ignore as it does not fit with their preconceived ideas. Taking the first part: no, these days the interpretation is done by computer algorithms which work out the most l...

Paul D wrote:The paper is full of nomenclature mistakes (or typos). Doesn't fill me with confidence.

Agreed. It hardly gives confidence that the people doing this work were familiar with the plants, or thorough in their methods.

Here's the paper I was referring to: American Journal of Botany 94(8): 1321–1332. 2007. THE MOLECULAR PHYLOGENY OF REBUTIA (CACTACEAE) AND ITS ALLIES DEMONSTRATES THE INFLUENCE OF PALEOGEOGRAPHY ON THE EVOLUTION OF SOUTH AMERICAN MOUNTAIN CACTI CHRISTIANE M. RITZ LUDWIG MARTINS, RAINER MECKLENBURG, ...

No attachment, I'm afraid. Try again!

Yes, could be kesselringiana - although that has lemon yellow flowers, but this looks more orange. Perhaps just the photo.

I hadn't seen that Romanian paper, but its conclusions are at odds with other more recent work showing Rebutia to be quite distinct to Aylostera.

Actually, probably a better candidate might be R. wessneriana.

Peter I wouldn't mind a piece of your kratochviliana if you would care to exchange a cutting for something from my swaps page. http://ralph.cs.cf.ac.uk/Cacti/forsale.php However, I think the names may have got ixed up along the way. While there is an Echinopsis kratochviliana, I have never heard of ...