Comments: Kartesz (1999) moves 'utahensis' and 'viridis' material, both formerly (1994) placed in Claytonia perfoliata (C. perfoliata ssp. perfoliata var. utahensis and C. perfoliata ssp. viridis), into Claytonia parviflora. Claytonia perfoliata ssp. intermontana and C. perfoliata ssp. mexicana, both newly described in 1993 and not addressed in Kartesz (1994), are also recognized as subspecies within C. perfoliata by Kartesz (1999).
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