Definition
Genus Peireskia is an alternative form, less common, referring to the same group of cacti known as genus Pereskia. This includes cacti characterized by having true leaves, unlike most cacti that have spines. The genus represents a unique branch in cactus evolution, showcasing ancestral traits. Think of it as a synonym for genus Pereskia. While 'genus Pereskia' is the more widely accepted term, 'genus peireskia' refers to the identical set of plants. It serves as a reminder of the slight variations that exist in scientific nomenclature. Thus, it is a taxonomic group of leafy cacti.