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| black spruce (Picea mariana(Mill.)Britton & al., Picea nigra(L.)Link); swamp spruce (Picea mariana(Mill.)Britton & al., Picea nigra(L.)Link); Eastern Canadian spruce (Picea mariana(Mill.)Britton & al., Picea nigra(L.)Link); red spruce (Picea mariana, Picea nigra) | |||