Thuja occidentalis Linnaeus, Species Plantarum 2: 1002. 1753.

"Habitat in Canada, Sibiria." RCN: 7252.

Lectotype (Reveal in Jarvis & al., Regnum Veg. 127: 94. 1993): Kalm, Herb. Linn. No. 1136.1 (LINN) .

Generitype of Thuja Linnaeus (vide Green, Prop. Brit. Bot.: 189. 1929).

Current name: Thuja occidentalis L. ( Cupressaceae).