Nomenclatural transfer of Chamaecyparis obtusa (Siebold & Zucc.) Endl. ‘Sanderi’ (Cupressaceae) to Thuja orientalis L. ‘Sanderi’ on the basis of phytochemical data

The longstanding problem of the true identity of the juvenile conifer clone usually known as Chamaecyparis obtusa‘Sanderi’ has been solved by comparing gas chromatograms of solvent extracts of foliage specimens. Forty-seven species of the northern Cupressaceae were compared with ‘Sanderi’ but close similarity was shown only by juvenile forms of Thuja orientalis. All other species studied showed significant, usually major, differences.