Quillaja

Quillaja is a genus of flowering plants, the only extant genus in the family Quillajaceae with two or three known species.^[1] It was once thought to be in the rose family, Rosaceae,^[2] but recent research shows it belongs in its own family. The inner bark of the soap bark tree (Q. saponaria) contains saponin, which is a natural soap. Members of this genus are trees that grow to about 25 metres (82 ft).

Quillaja
Quillaja saponaria
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Quillajaceae
Genus:	Quillaja Molina
Species
See text
Distribution of the Quillajaceae
Synonyms
Fontenellea A.St.-Hil. & Tul.

Species

The species were revised by Federico Luebert in 2014:^[3]

Image	Name	Distribution
	Quillaja brasiliensis (A.St.-Hil. & Tul.) Mart.	Brazil
	Quillaja saponaria Molina	central Chile in the forests of La Campana National Park and Cerro La Campana