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Picea rubens
''Picea rubens'', commonly known as red spruce, is a species of spruce native to eastern North America, ranging from eastern Quebec to Nova Scotia, and from New England south in the Adirondack Mountains and Appalachians to western North Carolina.〔Farjon, A. (1990). ''Pinaceae. Drawings and Descriptions of the Genera''. Koeltz Scientific Books ISBN 3-87429-298-3.〕〔Flora of North America: (''Picea rubens'' )〕〔Gymnosperm Database: (''Picea rubens'' )〕
This species is also known as yellow spruce, West Virginia spruce, eastern spruce as well as he-balsam.〔http://www.na.fs.fed.us/pubs/silvics_manual/Volume_1/picea/rubens.htm〕
==Description==
Red spruce is a perennial,〔(【引用サイトリンク】url=http://www.gardenguides.com/taxonomy/red-spruce-picea-rubens/ )〕 shade-tolerant, late successional. coniferous tree which under optimal conditions grows to tall with a trunk diameter of about , though exceptional specimens can reach tall and diameter. It has a narrow conical crown. The leaves are needle-like, yellow-green, long, four-sided, curved, with a sharp point, and extend from all sides of the twig. The bark is gray-brown on the surface and red-brown on the inside, thin, and scaly. The wood is light, soft, has narrow rings, and has a slight red tinge.〔(【引用サイトリンク】url=http://plants.usda.gov/factsheet/pdf/fs_piru.pdf )〕 The cones are cylindrical, long, with a glossy red-brown color and stiff scales. The cones hang down from branches.〔〔〔〔Atlantic Forestry Centre: (Red Spruce )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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