Editing Begonia (section)

=== Cultivar groups ===
[[File:Begonia display.jpg|thumb|right|upright|Display of (tuberous) begonias, Hampton Court Flower Show]]

Because of their sometimes showy flowers of white, pink, scarlet, or yellow color and often attractively marked leaves, many species and innumerable [[Hybrid (biology)|hybrid]]s and [[cultivar]]s are cultivated. The genus is unusual in that species throughout the genus, even those coming from different continents, can frequently be hybridized with each other, and this has led to an enormous number of cultivars. The [[American Begonia Society]] is the [[International Cultivar Registration Authority]] for ''Begonia'', and classifies them into several major groups:

*[[Cane begonia]] {{En dash}} forms tough, [[bamboo]]-like canes
* shrub-like
* [[Begonia × tuberhybrida|tuberous]]
* rhizomatous
* semperflorens (wax or fibrous rooted begonias)
* Rex
* trailing-scandent
* thick-stemmed
For the most part, these groups do not correspond to any formal taxonomic groupings or phylogeny, and many species and hybrids have characteristics of more than one group or do not fit well in any of them.