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A tree structure, tree diagram, or tree model is a way of representing the hierarchical nature of a structure in a graphical form. It is named a "tree structure" because the classic representation resembles a tree , although the chart is generally upside down compared to a biological tree, with the "stem" at the top and the "leaves" at the bottom.
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 ...
A schematic, or schematic diagram, is a designed representation of the elements of a system using abstract, graphic symbols rather than realistic pictures. A schematic usually omits all details that are not relevant to the key information the schematic is intended to convey, and may include oversimplified elements in order to make this essential meaning easier to grasp, as well as additional ...
Spruce is the standard material used in soundboards for many musical instruments, including guitars, mandolins, cellos, violins, and the soundboard at the heart of a piano and the harp. Wood used for this purpose is referred to as tonewood. Spruce, along with cedar, is often used for the soundboard/top of an acoustic guitar. The main types of ...
Norway spruce Pinaceae (pine family) Picea alcoquiana: Alcock's spruce Pinaceae (pine family) Picea asperata: dragon spruce Pinaceae (pine family) Picea aurantiaca: orange spruce Pinaceae (pine family) Picea brachytyla: Sargent's spruce Pinaceae (pine family) Picea breweriana: Brewer's spruce Pinaceae (pine family) Picea chihuahuana: Chihuahua ...
Picea breweriana, known as Brewer spruce, [2] [3] Brewer's weeping spruce, or weeping spruce, is a species of spruce native to western North America, where it is one of the rarest on the continent. The specific epithet breweriana is in honor of the American botanist William Henry Brewer .
Picea smithiana is a species of evergreen tree in the family Pinaceae family. [2] It is referred to by the common names morinda spruce [3] [4] [5] and West Himalayan spruce, and is a spruce native to the western Himalaya and adjacent mountains, from northeast Afghanistan, northern Pakistan, India to central Nepal.
Picea obovata, the Siberian spruce, is a spruce native to Siberia, from the Ural Mountains east to Magadan Oblast, and from the Arctic tree line south to the Altay Mountains in northwestern Mongolia. It is a medium-sized evergreen tree growing to 15–35 m tall, and with a trunk diameter of up to 1.5 m, and a conical crown with drooping ...