About Abies sibirica Ledeb.
Abies sibirica Ledeb., commonly called Siberian fir, grows 30–35 meters tall, with a trunk diameter of 0.5–1 meter at breast height and a conical crown. Its bark is grey-green to grey-brown, smooth, and marked with resin blisters, a feature typical of most fir species. Shoots are yellow-grey, resinous, and slightly covered in fine hairs. Its leaves are needle-like, averaging 2–3 cm long and 1.5 mm broad. The needles are light green on the upper surface, with two grey-white stomatal bands on the underside; they point upwards along the stem, and are soft, flattened, and strongly aromatic. The cones are cylindrical, measuring 5–9.5 cm long and 2.5–3.5 cm broad, with small bracts hidden behind the cone scales. Cones ripen from bluish to brown or dark brown in mid-autumn. The seeds are 7 mm long, with a triangular wing 0.7–1.3 cm long, and are released when the cone disintegrates after reaching maturity. This tree grows in cold boreal climates, on moist soils in mountains or river basins at elevations of 1900–2400 m. It is very shade-tolerant, frost-resistant, and hardy, able to survive temperatures as low as −50 °C. It rarely lives longer than 200 years, because its wood is susceptible to fungal decay. Abies sibirica can be infected by the fungus Delphinella balsameae, which was first reported in Russia in 2003. Essential oils extracted from its leaves are used in aromatherapy and perfumes. Its wood is soft, lightweight, and weak, and is used for construction, furniture, and wood pulp.
