This isn't the easy answer you wanted, but one way to try to figure out names is to match up your plants with the photos on e.g. Conos Paradise, which illustrates a very good selection of Lithops.
https://www.conos-paradise.com/en/shop/ ... ?m=lithops

I'm sure I have read, and it's my experience also, that T. singularis is quite often not single leaved in cultivation.

They are hardy to 5C, but I wouldn't try much lower. They are more likely to suffer from excess heat and light in summer, in my experience.

Maybe someone should have a go at crossing the ex-Mangaves with their distant cousins, Hostas. We might get nice, stripy, prickly, spotty, hardy "x Hostages" er "x Hostagaves"...

Eric Williams wrote: ↑Sun Nov 01, 2020 12:54 pm Years ago I was given a seed pod of S gigantia. Sorry to say it turned out to be S. hirsuta. Still a nice plant though. I would loved it to the former though.

Remind me in the spring, Eric, and I'll send you a cutting.

Herts Mike wrote: ↑Sun Nov 01, 2020 10:03 am Does it smell?

My wife said it didn't. Bad wife...

Saving the biggest and best till last - Stapilia gigantea open today, at least 20cm across

I've always planted my Stapeliad seed in spring, but also take it out of the propagtor fairly soon after germination.

Aestival just means growing in summer (and resting in winter).
Most seedlings I get out of the humidity pretty soon, but don't do that with Blossfeldias. They are just too small to survive. See Aiko's advice.

Well, It's one I haven't grown from seed, some I can'r really offer any specific advice. But as adult plants, they develop a tap root, but still need a bit of water in winter, in my experience. All my Astrophytum seedlings get the same treatment as others, which is to keep watering them through thei...