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Tilia platyphyllos
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・ Tilia × europaea
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Tilia platyphyllos : ウィキペディア英語版
Tilia platyphyllos

''Tilia platyphyllos'' is a species of flowering plant in the family Malvaceae. It is a deciduous tree, native to much of Europe, including locally in southwestern Great Britain, growing on lime-rich soils. The common name large-leaved linden is in standard use throughout the English-speaking world except in the British Isles, where it is widely, but not universally, known as large-leaved lime. The name "lime", possibly a corruption of "line" originally from "lind", has been in use for centuries and also attaches to other species of ''Tilia''. It is not, however, related to the lime fruit tree, a species of citrus.
The specific epithet ''platyphyllos'' means "with broad leaves".
==Description==
''T. platyphyllos'' is a narrowly domed tree with a moderate growth rate, and can eventually attain a height of 40 m. The reddish-brown young stems later develop dark grey bark with fine fissures and furrows. The branches spread upwards at wide angles. The twigs are reddish-green and slightly pubescent. The foliage consists of simple, alternately arranged leaves. As indicated by its common name, this tree has larger leaves than the related ''Tilia cordata'' (Small-leaved Linden), 6 to 9 cm (exceptionally 15 cm). They are ovate to cordate, mid to dark green above and below, with white downy hair on the underside, particularly along the veins, tapering into a mucronate tip. The margin is sharply serrate, and the base cordate; the venation is palmate along a midrib. The pubescent petiole is usually 3–4 cm long, but can vary between 1.5–5 cm. The autumn foliage is yellow-green to yellow.
The small, fragrant, yellowish-white flowers are arranged in drooping, cymose clusters in groups of 3 to 4. Their whitish-green, leaf-like bracts have an oblong-obovate shape. The geniculate peduncles are between 1.5–3 cm long. The hermaphroditic flowers have 5 sepals and 5 tepals, numerous stamens, but no staminodes. The superior ovary is 2-10 locular with one smooth style. The flowers are pollinated by bees. The fruit is a small, round, tomentose, cream-colored nutlet with a diameter of 1 cm or less. It has a woody shell with 3-5 ridges.

Image:Tilia platyphyllos(02).jpg|leaves
Image:Tilia platyphyllos (Florée) JPG1R.jpg|roots
File:Tilia platyphallos bud.jpg|vegetative bud starting to open


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「Tilia platyphyllos」の詳細全文を読む



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