Yes, Simon, I have been thinking nearly the same thoughts.... I think we should use the names of cultivars, be they of Japanese origin or not - but I doubt that it would be practical to always use the Japanese - or whatever language! - descriptions. 'Super Kabuto' and 'Onzuka' f.e have been in use for a long time and though they actually are not the names of varieties (as both names cover a wide range of different, both in appearance and genetically, plants), they give us certain clues what to expect. Probably the same with 'Kikko' and 'Koh-Yo' . Nevertheless, even these - and not only these! - names are often misused: if you look for astrophytums on eBay f.e, you can see now and again that a so-called 'Super Kabuto' actually is a capXas hybrid (sometimes even not with remarkable white spots) and 'Onzuka' is nothing but a common
myriostigma or myXor / or/my hybrid. I don't know much about the
Ariocarpus cultivars - but I have a sense that the things with the ario names are not better.
What to do? I think a good idea would be to gather all the available information together and place in a fixed place here on the forum, so that everyone can easily access this information. I mean something like this:
Astrophytum asterias 'Super Kabuto', 'Super-Kabuto': a group of breeds with bigger and hairier white flecks than the species has in nature. The plant body may be covered with the flecks entirely or partly. Ribs must be flat, sharp ribs indicate that the plant is a hybrid and as such, can not be called 'Super Kabuto'. 'Kabuto' is
A. asterias in Japanese.
Astrophytum asterias '
Hanazono': a group of breeds with areoles also between ribs. Flowers appear over the whole plant body. May have or may not have big white flecks like 'Super Kabuto'. 'Hanazono' means... well, I actually do not know what it means.
But what about fe 'Onzuka' + 'Kikko' + 'Hakujo' + 'Fukuryu' + .. I do not know, whatever? That kind of "names" in fact are ugly and barely usable. A much shorter name would be much more preferable. But how to obtain it? A lot of enthusiasts and breeders may result the similar looking plants using different breeding programs. It's principally simple case, when an striking new form appears that can be propagated only by vegetative means - then it's a true variety and it's breeders names it. The others only have to accept the name nad that's it. But if several breeders develop similar looking plants that are propagated sexually, we got a group of breeds, not a true variety and who says how to name this group?