My current list:
brevipilosa
difficilis
grandifolia (unspecified which clone)
grotei Mather # 21
grotei Protzen
intermedia
ionantha House of Amani
magungensis (unspecified which clone)
nitida
pendula var. pendula
rupicola
shumensis
velutina (unspecified which clone)
I had an "orbicularis", but this turned out to be a misidentified grotei. Because I wasn't sure which grotei clone it was, I stopped growing this one. Perhaps we can check if there are more of these "not-orbicularis" around so we can, if needed, correct our list? Laci, how does your orbicularis look?
I am thinking about making a table which all of us can edit. In this way we can all add and update our lists and have it in a single overview.
Gabi, can we make an exchange in spring? I note from your list that you use some older and some newer names "mixed", I assume that this is just "how you got the plants". What do you thing, should we discuss which version of the names we use? I used very outdated and abbreviated names here above, but in my own administration I try to use the most scientifically correct ones, which are longer and more clumsy. Please tell me what is the difference between your "S. intermedia" and your "pendula intermedia"? Did I mix up something?
And to the others: I am always happy to send leaves, but sometimes I am a bit slow (Diana knows

). I think that it is very important that more people grow the same plants, so if someone loses one or more, not all is lost

I restart my plants from leaves from time to time, which means that I don't always have leaves of all to share ....