Cultivars

... and variants of species / sub-species. I tend to the view that what is important is the species and the selected forms of the gardener no more than specially chosen examples. (This is oversimplifying of course - many garden daffodils / roses etc are very distant from their wild ancestors genetically.)
The site is now modified to deal with these consistently I hope. Main indexes list species / sub-species but there is now a Variant / Cultivar index as well.