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Picea glauca (Moench) Voss., the white spruce, [4] is a species of spruce native to the northern temperate and boreal forests in Canada and United States, North America.. Picea glauca is native from central Alaska all through the east, across western and southern/central Canada to the Avalon Peninsula in Newfoundland, Quebec, Ontario and south to Montana, North Dakota, Minnesota, Wisconsin ...
Picea engelmannii, with the common names Engelmann spruce, [3] white spruce, [3] mountain spruce, [3] and silver spruce, [3] is a species of spruce native to western North America. Highly prized for producing distinctive tone wood for acoustic guitars and other instruments, it is mostly a high-elevation mountain tree but also appears in watered ...
White spruce is a common name for several species of spruce and may refer to: White spruce cones. Picea glauca, native to most of Canada and Alaska with limited populations in the northeastern United States; Picea engelmannii, native to the Rocky Mountains and Cascade Mountains of the United States and Canada
The peg-like base of the needles, or pulvinus, in Norway spruce (Picea abies) Pulvini remain after the needles fall (white spruce, Picea glauca). Determining that a tree is a spruce is not difficult; evergreen needles that are more or less quadrangled, and especially the pulvinus, give it away.
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) A conifer cone, or in formal botanical usage a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads.
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An 1885 illustration of P. abies, showing the cones and leaves. Young female cone. Norway spruce is a large, fast-growing evergreen coniferous tree growing 35–55 m (115–180 ft) tall and with a trunk diameter of 1 to 1.5 m.
The seed cones closely resemble those of the Sitka spruce but are smaller and with the rounded tops of white spruce cones. [ 6 ] Between 1987 and 2000 the largest known epidemic of spruce bark beetle ( Dendroctonus rufipennis ) caused the death of 90% of white, Sitka, and hybrid Lutz spruce, almost all of the mature spruce trees, in a 3.2 ...
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