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Picea mariana (Mill.) Britton et al. - syn. Abies mariana Mill. - Pinaceae
black spruce, bog spruce, Schwarzfichte

Eevergreen coniferous tree, up to 15m tall, native to North america (Canada).

„Bornyl acetate (34.2 %) was the main compound identified in the Picea mariana (Mill.) B.S.P., (Black Spruce) oil and monoterpenes, mainly α -pinene (12.9 %) and camphene (16.4 %), constituted at least 45 % of the oil.“
[Garneau, François-Xavier, et al. „Chemical Composition of the Hydrosol and the Essential Oil of Three Different Species of the Pinaceae Family: Picea glauca (Moench) Voss., Picea mariana (Mill.) BSP, and Abies balsamea (L.) Mill.“ Journal of Essential Oil Bearing Plants 15.2 (2012): 227-236]

Picea mariana (Miller) Britton, Sterns & Poggenb.
Sargent, C.S., The Silva of North America, vol.12 t.596 (1898) [C.E. Faxon]
http://botanicalillustrations.org/species.php?id_species=789192

Picea mariana
© Rolf Marschner (2015), www.botanische-spaziergaenge.at