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See flags under each taxon. e.g. https://www.inaturalist.org/flags/337079 Taxonomy in this genus currently follows three conflicting treatments: CNPS (mostly the same as Kearney), Jepson 2nd Edition (Slotta), and Flora of North America (Bates). I am currently working on resolving the taxonomy using molecular and morphological approaches. In the meantime, I am generally following the most conservative treatment (Kearney) which is mostly followed by CNPS and Calflora. This treatment best fits the current evidence on taxon delimitation and retains CNPS listed rare taxa that the other treatments lump.