This is a general question about common names, illustrated with one example.
I recently encountered a number of observations that had been identified to the wrong variety, most likely because of the English name assigned to the variety.
The taxon in this case is Penstemon rydbergii (https://www.inaturalist.org/taxa/78420-Penstemon-rydbergii). Inat’s taxonomy lists two subordinate varieties plus the nominate variety:
Penstemon rydbergii (Rydberg Penstemon)
Penstemon rydbergii var. aggregatus (Meadow Penstemon)
Penstemon rydbergii var. oreocharis (Tall Beardtongue)
Penstemon rydbergii var. rydbergii
I did a quick check online and in a few books I have on hand, and found the “common names” Meadow Penstemon, Rydberg’s Penstemon, and Rydberg’s Meadow Penstemon all applied to the parent species (or to whichever variety occurred in the area of coverage). Assigning the most commonly used name Meadow Penstemon to one of the varieties appeared to lead a number of people astray in their identifications. (I added IDs to these observations so they now all are at species level).
It seems like there are a few ways to handle this sort of situation:
a) Assign any commonly used vernacular names to the parent species, and leave the subordinate taxa without a vernacular name.
b) Add duplicate vernacular names, so that the parent and all subordinate taxa have the same set of names.
c) Assign unique vernacular names to the subordinate taxa. The advantage would be in providing precise names, the disadvantage would be that those common names might not be found anywhere outside Inat. In this case you might have something like
Penstemon rydbergii (Meadow Penstemon, Rydberg Penstemon)
Penstemon rydbergii var. aggregatus (Interior Meadow Penstemon)
Penstemon rydbergii var. oreocharis (Western Meadow Penstemon)
Any thoughts on the best way to deal with this? I like option C, but I understand the policy in general is not to create names that are not in use elsewhere. My understanding is also that names can be added (and removed?) by anybody, but would this sort of thing be best handled by flagging for curation?
Completely tangential side question - I have never actually heard anybody refer to a Penstemon as a Beardtongue. Is this a regional thing, or just my own limited circle of people who know what a penstemon is?