Quillaja is a genus of flowering plants, the only extant genus in the family Quillajaceae with two or three known species. It was once thought to be in the rose family, Rosaceae, 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).
The species were revised by Luebert in 2014:
Kirjoita oire tai sairaus ja lue yrtteistä, jotka saattavat auttaa, kirjoita yrtti ja näe taudit ja oireet, joita vastaan sitä käytetään.
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