Perlilla, Manzanita, Perla or Pearlfruit (Margyricarpus pinnatus) is a bush that grows 15-30 cm tall and has densely leafy stems. It produces white flowers and fleshy, round, white fruits with tints of purple. The frutis are very sweet in flavor, and commonly eaten fresh in the diet of the Araucanian and Pampas people of the area. The plant grows in the sandy or rocky soils in Andean Patagonia and in central and northern Chile. It is not cultivated, but fruits are harvested from the wild for personal or family consumption. Because of this, the fruits are not known outside of the areas where they naturally occur, and are particularly unknown among urban populations in Argentina.

A genus of eight species in South America, placed in the tribe Sanguisorbeae of the Rose family, with Acaena, Alchemilla, Sanguisorba, and Poterium, to name only those genera best known in gardens; hybrids with Acaena have been recorded, despite the great differences between their fruits (Bean 1981; Mabberley 2017). In Margyricarpus the fruit is an achene, enclosed in the fleshy calyx-tube that swells to make a single berry-like fruit. The formerly monospecific Margyricarpus now includes Tetraglochin, but only M. pinnatus is known to be in cultivation.