nomenclatural changes are minimized
(Backlund & Bremer, 1998). Thus, on the one hand,
numerous small groups have little to recommend
them, as individually they summarize only a small
amount of information and tend to clog the memory,
whereas groups that are too large may have few
obvious shared traits that can be used to recognize
them. Asparagales and Lamiales in particular have a
number of problems in this regard and include families
that are still in a state of flux in this respect.
Changes are being made to the classification
adopted by APG II for several reasons, but bearing
the Backlund and Bremer guidelines in mind.