|Young Siberian Spruce trees, Khanty–Mansi Autonomous Okrug (Russia)|
|Species:||P. obovata (disputed, see text)|
Picea abies ssp. obovata (but see text)
Description and uses
It is a medium-sized evergreen tree growing to 15–35 m tall, and with a trunk diameter of up to 1.5 m, and a conical crown with drooping branchlets. The shoots are orange-brown, with variably scattered to dense pubescence. The leaves are needle-like, 1–2 cm long, rhombic in cross-section, shiny green to grayish-green with inconspicuous stomatal lines; the leaves subtending a bud are distinctively angled out at a greater angle than the rest of the leaves (a character shared by only two or three other spruces). The cones are cylindric-conic, 5–10 cm long and 1.5–2 cm broad, green or purple, maturing glossy brown 4–6 months after pollination, and have stiff, smoothly rounded scales.
Taxonomy and systematics
Siberian Spruce hybridises extensively with Norway Spruce where the two species (or subspecies) meet in northeastern Europe; trees over a broad area from extreme northeast Norway and northern Finland east to the Ural Mountains are classified as the hybrid Picea × fennica (Regel) Komarov (or P. abies subsp. ×fennica, if the two taxa are considered subspecies); they differ from typical P. obovata from east of the Urals in having cones with less smoothly rounded, often triangular-pointed, scales.
- Conifer Specialist Group (1998). Picea obovata. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 12 May 2006.
- Gymnosperm Database: Picea obovata
- Farjon, A. (1990). Pinaceae: Drawings and Descriptions of the Genera. Koeltz Scientific. ISBN 3-87429-298-3 [North America].
- Staff of the Bailey Hortorium (2000). Hortus Third. Barnes and Noble Books. ISBN 0-7607-2116-5 p. 871.
- Krutovskii, K.V. & Bergmann, F.: "Introgressive hybridization and phylogenetic relationships between Norway, Picea abies (L.) Karst., and Siberian, P. obovata Ledeb., spruce species studied by isozyme loci. - Heredity 74 (1995): 464-480. http://www.nature.com/hdy/journal/v74/n5/pdf/hdy199567a.pdf