Does anyone know how to add a subspecies or a request a subspecies to be added? The subspecies Cryptantha nevadensis nevadensis is not currently in the iNaturalist taxonomy list. Here is Calflora’s entry on the ssp. (https://www.calflora.org/app/taxon?crn=9836).
iNaturalist’s taxonomy is maintained by its site curators. If you believe a taxon should be added to iNaturalist, it’s best to go to that taxon’s parent’s page (eg https://www.inaturalist.org/taxa/76519-Cryptantha-nevadensis) on the website and flag it for curation by clicking on “Curation” (under the graph) and selecting “Flag for curation”. You can then write a short note citing your source and the curators will see it.
Note that iNat follows Plants of the World Online for its plant taxonomy.