I know that taxonomy is a manmade classification and that a lot of research goes into it to determine genus, species, etc... I also know that if you ask one taxonomist you get one opinion and if you ask another, you get a differning one. Still, a lot of logic and genetics go into it.
Having said all that, why do Byblis and Drosphyllum have genuses separate from Drosera, even though they are all dew-like plants? Secondarily, why would a sundew from North America be realted to one in Australia when something likbe B. liniflora is classified as being less closely related?
Why is Darlingtonia considered part of Sarracenia, especially S. minor?