Tara tinctoria – synonym of Caesalpinia spinosa
Temu cruckshanksii – synonym of Blepharocalyx cruckshanksii
Temu divaricatum – synonym of Blepharocalyx cruckshanksii
Thiga chilensis – synonym of Laurelia sempervirens
Thuja andina – synonym of Austrocedrus chilensis
Thuja chilensis – synonym of Austrocedrus chilensis
Thuja tetragona – synonym of Pilgerodendron uviferum
Trichocereus atacamensis – synonym of Helianthocereus atacamensis
Tricondylus dentatus – synonym of Lomatia dentata
Tricondylus ferrugineum – synonym of Lomatia ferruginea
Tricondylus obliqua – synonym of Lomatia hirsuta
Tricuspidaria dependens – synonym of Crinodendron patagua
Tricuspidaria hexapetala – synonym of Crinodendron patagua
Tricuspidaria hookeriana – synonym of Crinodendron hookerianum
Tricuspidaria lanceolata – synonym of Crinodendron hookerianum
Tricuspidaria patagua – synonym of Crinodendron patagua
Tricuspis dependens – synonym of Crinodendron patagua