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''Cornus kousa'' (also ''Benthamidia kousa''), the Kousa dogwood,〔("''Cornus kousa'' Hance" ) at Germplasm Resources Information Network. Retrieved 1 July 2011.〕 is a small deciduous tree tall, in the dogwood family Cornaceae. It is native to Korea, much of China, Japan, Korea, Taiwan, Sikkim, Bhutan and the Ryukyu Islands.〔(Flora of China, v 14 p 220, ''Cornus kousa'' subsp. ''chinensis'' )〕 It is reported to be naturalized in Hawaii, Connecticut and New York State.〔(Biota of North America Project )〕 It is widely cultivated as an ornamental. The Kousa dogwood is sometimes also called "Chinese dogwood",〔 Korean dogwood, or Japanese dogwood.〔 ==Description== Like most dogwoods, Kousa dogwood has opposite, simple leaves, 4–10 cm long. The tree is extremely showy when in bloom, but what appear to be four, white petals are actually four spreading bracts below the cluster of inconspicuous yellow-green flowers. The blossoms appear in late spring, weeks after the tree leafs out. The kousa dogwood can be distinguished from the closely related flowering dogwood (''Cornus florida'') of eastern North America by its more upright habit, flowering about a month later, and by the pointed rather than rounded flower bracts. The fruit is a globose pink to red compound berry 2–3 cm in diameter, though these berries tend to grow larger towards the end of the season and some berry clusters that do not fall from the tree exceed 4 cm. It is edible, a sweet and delicious addition to the tree's ornamental value. The fruit is sometimes used for making wine.〔("''Cornus kousa'' subsp. ''chinensis''" ) at eFloras.org. Retrieved 1 July 2011.〕〔(Miquel, Friedrich Anton Wilhelm. 1866. Annales Musei Botanici Lugduno-Batavi 2(6): 159–160 )〕 It is resistant to the dogwood anthracnose disease, caused by the fungus ''Discula destructiva'', unlike ''C. florida'', which is very susceptible and commonly killed by it; for this reason, ''C. kousa'' is being widely planted as an ornamental tree in areas affected by the disease. A number of hybrids between ''C. kousa'' and ''C. florida'' have also been selected for their disease resistance and good flower appearance. Fall foliage is a showy red color. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cornus kousa」の詳細全文を読む スポンサード リンク
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