Creating species complexes

[nathantaylor]

Because it can cause a lot of confusion:

@loarie

The main cost that we’re concerned with is that it is making the taxon search a bit confusing when there are different nodes with the same name. The recent addition of rank ‘complex’ is an example. Protocol is to give the complex the name of the first named taxon within it (e.g. complex Hyla versicolor contains species Hyla chrysoscelis and species Hyla versicolor). And now when people search Hyla versicolor both the species and the complex appear which is confusing.