>> I also think we're going to need a "Cultivar Group", as that is quite useful information, more useful than the latin family name, in my opinion.
Agreed, except that sometimes the Family name helps me go from TOTAL ignorance to 99% ignorance. "Oh, one of THOSE!"
>> you need a certain level of flexibility,
>> No database can be one-size-fits-all.
Totally agree! few things in the real world fit perfectly into simple categories, and living things are as hard to contain in categories as they are in fields or streams.
I think that the concerns about "sort order" will fade when we have many search features.