Spruce

A spruce is a tree of the genus Picea ( /paɪˈsiːə/), a genus of about 35 species of coniferous evergreen trees in the Family Pinaceae, found in the northern temperate and boreal (taiga) regions of the earth. Spruces are large trees, from 20–60 metres (66–200 ft) tall when mature, and can be distinguished by their whorled branches and conical form. The needles, or leaves, of spruce trees are attached singly to the branches in a spiral fashion, each needle on a small peg-like structure called a pulvinus. The needles are shed when 4–10 years old, leaving the branches rough with the retained pulvinus (an easy means of distinguishing them from other similar genera, where the branches are fairly smooth).

Spruces are used as food plants by the larvae of some Lepidoptera species; see list of Lepidoptera that feed on spruces. They are also used by the larvae of gall adelgids (Adelges species).

In the mountains of western Sweden scientists have found a Norway Spruce tree, nicknamed Old Tjikko, which by reproducing through layering has reached an age of 9,550 years and is claimed to be the world's oldest known living tree.

Read more about SpruceClassification, Etymology

Other articles related to "spruce":

Spruce, Nevada
... Spruce, Nevada is a Class Code U6—A area that is not a census designated or incorporated place having an official federally recognized name ... Spruce appears on the Independence Valley SW U.S ... Alternate (unofficial) names for Spruce Sonar, Spruce Siding ...
Thera Variata
... The Spruce Carpet (Thera variata) is a moth of the family Geometridae ... The Common name Spruce Carpet is also used when referring to Thera britannica ... The larva feed on spruce and other Pinophyta ...

Famous quotes containing the word spruce:

    You did not expect to find such spruce trees in the wild woods, but they evidently attend to their toilets each morning even there. Through such a front yard did we enter that wilderness.
    Henry David Thoreau (1817–1862)

    And then we’ll sit
    in the shadowy spruce and
    pick the bones
    of careless mice,
    while the long moon drifts
    toward Asia
    John Haines (b. 1924)

    In some of those dense fir and spruce woods there is hardly room for the smoke to go up. The trees are a standing night, and every fir and spruce which you fell is a plume plucked from night’s raven wing.
    Henry David Thoreau (1817–1862)