Definition
"Peireskia" is an alternate, though less common, spelling of "Pereskia". It refers to a unique genus of cacti that possess leaves, setting them apart from most other cacti. Like Pereskia, plants in this genus have true leaves and resemble shrubs or small trees. Think of 'peireskia' as a stylistic variation of the original name. It emphasizes the connection to the botanist Peiresc. While 'Pereskia' is more widely accepted, 'peireskia' still appears in some botanical texts. Thus, it is essentially the same interesting leafy cactus.