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have been described, but are not accepted as distinct by all authors. These comprise, from east to west:
*Picea glauca var. glauca (typical or eastern white spruce): from Newfoundland west to eastern Alberta, on lowland plains.
*Picea glauca var. densata (Black Hills white spruce): The Black Hills in South Dakota.
*''Picea glauca'' var. ''albertiana'' (Alberta white spruce): The Rocky Mountains in Alberta, British Columbia and northwest

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