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History
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Picea abies
Picea abies
An 1885 illustration of P. abies, showing the cones and leaves.
An 1885 illustration of P. abies, showing the cones and leaves.
Young female cone
Young female cone
Cones of P. obovata are short and have rounded scales.
Cones of P. obovata are short and have rounded scales.
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Spruce
Spruce
The peg-like base of the needles, or pulvinus, in Norway spruce (Picea abies)
The peg-like base of the needles, or pulvinus, in Norway spruce (Picea abies)
Pulvini remain after the needles fall (white spruce, Picea glauca)
Pulvini remain after the needles fall (white spruce, Picea glauca)
Manually decorticated trunk of a spruce as protection against bark beetles
Manually decorticated trunk of a spruce as protection against bark beetles