What is "peraphyllum"

Peraphyllum is a monotypic genus of flowering plants in the rose family, containing the single species Peraphyllum ramosissimum, commonly known as the squaw apple or wild crab apple.

Translated from the Greek, the genus Peraphyllum means "very leafy" and the species name ramosissimum means "many branches". Peraphyllum is most closely related to Amelanchier, Malacomeles, Crataegus, and Mespilus.