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    "Improved white spruce ( Picea glauca) genome assemblies and annotation of large gene families of conifer terpenoid and phenolic defense metabolism". The Plant Journal. 83 (2): 189–212. doi: 10.1111/tpj.12886. PMID 26017574. Wikimedia Commons has media related to Picea. Wikisource has the text of the 1879 American Cyclopædia article Spruce.
    en.wikipedia.org
    Picea abies (L.) H. Karst is the accepted name of this species. More than 150 synonyms of Picea abies have been published. Homotypic synonyms of Picea abies are: Abies picea Mill. Pinus pyramidalis Salisb. Some heterotypic synonyms of Picea abies are: Abies carpatica (Loudon) Ravenscr. Abies cinerea Borkh. Abies erythrocarpa (Purk.) Nyman
    en.wikipedia.org
    "A Lower Cretaceous (Valanginian) seed cone provides the earliest fossil record for Picea (Pinaceae)". American Journal of Botany. 99 (6): 1069–1082. doi: 10.3732/ajb.1100568. PMID 22623610.
    en.wikipedia.org
    Cones of P. abies are longer and have pointed scales. Populations in southeast Europe tend to have on average longer cones with more pointed scales; these are sometimes distinguished as Picea abies var. acuminata, but there is extensive overlap in variation with trees from other parts of the range.
    en.wikipedia.org
  2. WebBlack spruce ( Picea mariana) and white spruce ( P. glauca) are found throughout most of northern North America, from the Great Lakes to the Arctic tree line. Both are used for pulp. White spruce produces good …

  3. WebNorway Spruce. Pronunciation: PI-see-a A-beez. Family: Pinacea. Genus: Picea. Type: Conifer. Native to (or naturalized in) Oregon: No. Conifer, evergreen tree, 40-60 ft (12-18 m) tall, pyramidal with drooping …

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