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Corylus colurna : ウィキペディア英語版 | Corylus colurna
''Corylus colurna'' (Turkish hazel or Turkish filbert) is a deciduous tree native to southeast Europe and southwest Asia, from the Balkans through northern Turkey to northern Iran. It is the largest species of hazel, reaching tall, with a stout trunk up to in diameter; the crown is slender and conical in young trees, becoming broader with age. The bark is pale grey-buff, with a thick, corky texture. The leaves are deciduous, rounded, 6–15 cm long and 5–13 cm across, softly hairy on both surfaces, and with a coarsely double-serrate to shallowly lobed margin. The main limbs are quite small in diameter in relationship to the straight trunk, and arise at almost a 90-degree angle. Making the tree quite durable to urban conditions and helps maintain a symmetrical crown which landscape architects love so much. 〔 〕 ''Corylus colurna'' has a medium growth rate. ''Corylus colurna'' is occasionally drought tolerant and alkaline soil tolerant. However, it prefers moist, well-drained soil, as well as full sun. Once established ''Corylus colurna'' is tolerant of heat, cold, and drought. There are no serious pests or problems with ''Corylus colurna''. 〔 (【引用サイトリンク】 publisher=The Morton Arboretum )〕 ''Corylus colurna'' is not easily transplantable, and will need extra watering in summer after transplanting. It will take about two years after transplant for the tree to become establish and survive on its own.〔Phillips, L. (2002, July). Turkish Hazelnut. (Tree of the Month). Arbor Age, 22(7), 38. Retrieved from http://go.galegroup.com/ps/i.do?id=GALE%7CA89379137&v=2.1&u=sunycesfsc&it=r&p=PPAG&sw=w&asid=48a6ee3d38e80930f3a4add21f707a6d〕 ==Flower== The flowers are bloom in early spring before the leaves, and are monoecious, with single-sex catkins; the male pale yellow and 5–10 cm long, the female very small and largely concealed in the buds, with only the bright red 1–3 mm long styles visible. The flowers on female trees are not very visible. The male trees however are.
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「Corylus colurna」の詳細全文を読む
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