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The blue spruce (Picea pungens), also commonly known as Colorado spruce or Colorado blue spruce, is a species of spruce tree native to North America in Arizona, Colorado, Idaho, New Mexico, Utah and Wyoming. [4] It is noted for its blue-green colored needles, and has therefore been used as an ornamental tree in many places far beyond its native ...
Picea pungens: blue spruce Pinaceae (pine family) Picea purpurea: purple-cone spruce Pinaceae (pine family) Picea retroflexa: green dragon spruce Pinaceae (pine family) Picea rubens: red spruce Pinaceae (pine family) Picea schrenkiana: Schrenk's spruce Pinaceae (pine family) Picea sitchensis: Sitka spruce Pinaceae (pine family) Picea smithiana
The plant pathogenic fungus Leucostoma kunzei (formerly Valsa kunzei) is the causal agent of Leucostoma canker (also known as Cytospora canker or spruce canker), a disease of spruce trees found in the Northern Hemisphere, predominantly on Norway spruce (Picea abies) and Colorado blue spruce (Picea pungens).
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.
Tree of heaven (Ailanthus altissima) Northern catalpa (Catalpa speciosa) European larch (Larix decidua) Siberian larch (Larix sibirica) Osage orange (Maclura pomifera) White mulberry (Morus alba) Empress tree (Paulownia tomentosa) Norway spruce (Picea abies) Blue spruce (Picea pungens) Mountain pine (Pinus mugo) Black pine (Pinus nigra) Scots ...
Immature cones of a Colorado Blue Spruce (Picea pungens), a species of spruce native to western North America.It is a medium-sized evergreen tree growing to 25 to 30 metres (82 to 98 ft) tall, exceptionally to 46 m (151 ft) tall, and with a trunk diameter of up to 1.5 m (4.9 ft).
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A list of tree species, grouped generally by biogeographic realm and specifically by bioregions, and shade tolerance. Shade-tolerant species are species that are able to thrive in the shade, and in the presence of natural competition by other plants.
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