Salix chilensis – synonym of Salix humboldtiana
Salix magellanica – synonym of Salix humboldtiana
Schinus chilensis March. var. glabra – synonym of Schinus latifolia
Schinus dependens – synonym of Schinus polygama
Schinus dependens Ortega var. latifolia – synonym of Schinus latifolia
Schinus diversifolia – synonym of Schinus pearcei
Schinus huingan – synonym of Schinus molle
Schinus huyngan – synonym of Schinus polygama
Schinus molle – synonym of Schinus molle
Schinus piliferus – synonym of Schinus polygama
Schinus polygamus – synonym of Schinus polygama
Senacia maytenus – synonym of Maytenus boaria
Sida vitifolia – synonym of Corynabutilon vitifolium
Sidalcea triloba – synonym of Corynabutilon vitifolium
Smegmadermos emarginatus – synonym of Quillaja saponaria
Smegmaria emarginata – synonym of Quillaja saponaria
Sophora cassioides – synonym of Sophora cassioides
Sophora macnabiana – synonym of Sophora cassioides
Sophora microphylla – synonym of Sophora cassioides
Sophora tetraptera – synonym of Sophora cassioides
Sophora tetraptera – synonym of Sophora fernandeziana
Splitgerbera denudata – synonym of Boehmeria excelsa
Squamataxus albertiana – synonym of Saxegothaea conspicua
Stachycarpus andina – synonym of Prumnopitys andina
Steroxylon pulverulentum – synonym of Escallonia pulverulenta
Steroxylon revolutum – synonym of Escallonia revoluta