It is helpful if (1) taxa formally recognized are easily recognizable, (2) groups that are well estab- lished in the literature are preserved, (3) the size of groups is taken into account (particularly small ones, which should be combined with others whenever pos- sible) and (4) 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 fami- lies 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.
It is helpful if (1) taxa formally recognized are easily recognizable, (2) groups that are well estab- lished in the literature are preserved, (3) the size of groups is taken into account (particularly small ones, which should be combined with others whenever pos- sible) and (4) 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 fami- lies 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.
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