Rodger, It is every field biologist's dream to have a hand-held DNA sequencer but that technology won't come around for years. In the fungal world, we like to attach the term "species complex" to a name since DNA can distinguish the species but morphologically they are similar. It is more complicated to use extra words but it also provides good information to a name being applied. We all should remember that it's not what something is but rather what we call it. Allium bulgaricum isn't what the plant is, it's just what we call it. Nhu On Fri, May 20, 2011 at 8:42 AM, <totototo@telus.net> wrote: > if you have to run a DNA analysis > to distinguish visually indistinguishable two taxa, what is the poor field > biologist or wild flower lover to do? > -- http://www.flickr.com/photos/xerantheum/