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Tsuga canadensis (L.) Carr. - syn.Pinus canadensis L. - Pinaceae - eastern hemlock, pruche du Canada , Kanadische Schierlingstanne, Kanadische Hemlockstanne

Tree up to 30m high, native to eastern North America. „Numerous cultivars of Tsuga canadensis have been developed, including compact shrubs, dwarfs, and graceful trees.“
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501320

„Foliage of Tsuga canadensis was distilled with steam to give a 0.249% yield of essential oil. Eleven constituents, totaling 90.6% of the original oil, were seperated by fractional distillation, and tricyclene, d-α-pinene, l-camphene, l-β-pinene, myrcene, d-α-phellandrene, l-limonene, l-thujone and l-bornyl acetate were identified.“
[The essential oil of Tsuga canadensis (L.) Carr., Shaw, A.C., Journal of the American Chemical Society, Vol.73(6), 1951, 2859-2861]

bornyl acetate

α-pinene

camphene

The essential leaf oil of T. canadensis was characterized by a high content of bornyl acetate (28.4%), α-pinene (20.0%) and camphene (17.5%), besides tricyclene (6.7%), myrcene (4.4%), limonene (3.0%), β-phellandrene (2.5%) and only a small amount of santene (0.15%).
[Biology and chemistry of conifer oils., Kubeczka, K.H., Schultze, W., Flavour and fragrance journal, 2(4), 1987, 137-148]

„The volatile emissions of eastern hemlock, Tsuga canadensis Carriere, were identified and quantified using standard and chiral gas chromatography and mass spectrometry. All of the identified compounds were monoterpenes, and included α-pinene, myrcene, tricyclene, camphene, α-phellandrene, β-pinene, limonene, β-phellandrene, terpinolene, and bornyl acetate. α-Pinene, myrcene, and camphene comprised greater than 75% by mass of the total release.“
[Volatile emissions of eastern hemlock, Tsuga canadensis, and the influence of hemlock woolly adelgid., Broeckling, C.D., Salom, S.M., Phytochemistry, Vol.62(2), 2003, 175-180]

Tsuga canadensis (L.) Carrière as Abies canadensis (L.) Michx.
Millspaugh, C.F., American medicinal plants, vol. 2: t. 164 (1892)
http://plantgenera.org/species.php?id_species=1038728