Quadria avellana – synonym of Gevuina avellana
Quadria heterophylla – synonym of Gevuina avellana
Quillaia petiolaris – synonym of Azara petiolaris
Quillaja molinae – synonym of Quillaja saponaria
Quillaja poeppigii – synonym of Quillaja saponaria
Quillaja smegmadermos – synonym of Quillaja saponaria