Maybe this has been going on for a while, and I just haven’t noticed it until now. But it seems that POWO is allowing unpublished (“ined.”) names to be part of their accepted taxonomy. Example here.
Along with our earlier discussion about POWO’s wholesale adoption of some questionable taxonomic changes, this causes me to start questioning the scientific value of POWO as a taxonomic framework for vascular plants on iNaturalist, including one of my own earlier feature requests. Maybe there is still no better alternative, but at the very least, we may need to build a little more curatorial policy around its use.
For what it’s worth, I know we’ve had previous discussion about allowing unpublished scientific names to be added to the iNat taxonomy, and my position remains that this is a recipe for taxonomic anarchy down the road.