Recently I’ve had a few observations flagged with “arrived in the region via anthropogenic means” but also see lots of other observations with out this flag. It seems to stop research grade. My question is how recently does this introduction have to have occurred to deserve a flag? For example 4 out of 6 chickweeds listed in Flora of Virginia arrived after European settlement. Viewing Cerastium in Virginia not all introduced species are flagged.
Does this tag prevent our noticing the spread of introduced species since it seems to prevent research grade designation?