Rowan - Rowan

Japanese: ナナカマド - ななかまど
Rowan - Rowan

A deciduous tall tree of the Rosaceae family (APG classification: Rosaceae). It grows to a height of 7-10 meters. The branches have lenticels. The leaves are alternate and pinnately compound. The leaflets are 3-7 cm long, sessile, and number 9-15, oblong or lanceolate, with pointed tips and sharp duplicato-serrated edges. From May to July, compound corymbs of about 10 cm long appear at the ends of the branches, and many white five-petaled flowers bloom. There are 20 stamens, one pistil, 3-4 styles, and an inferior ovary. The five sepals are inwardly curved. The fruit is a globular pear-shaped fruit about 5 mm in diameter. It grows in cool mountainous areas, and is distributed throughout Japan, the Korean peninsula, the Kuril Islands, and Sakhalin. It is said that the name comes from the fact that it is so resistant to burning that it remains unburned even if it is put into the stove seven times. It is known for its beautiful autumn leaves and ripe red fruits. In Hokkaido , it is planted in tree-lined avenues. It is small, about 2 meters tall, with large stipules that are semicircular and leafy, 1 to 2 centimeters wide. It is distributed from Honshu west of the Kanto region to Kyushu.

The Rowan genus has about 100 species distributed mainly in temperate regions of the Northern Hemisphere.

[Naohiro Naruhashi January 21, 2020]

Rowan
A deciduous tree found throughout Japan. Its wood is used for tool handles, crafts, firewood, etc. ©Shogakukan Photo by Hiroshi Okada ">

Rowan

Rowan flower
From May to July, compound corymbs appear at the ends of the branches, and numerous white five-petal flowers bloom. ©Shogakukan Photo by Hiroshi Okada ">

Rowan flower

Rowan berries
The spherical pear-shaped fruit is about 5 mm in diameter. It ripens to a beautiful red in autumn. It is also used in flower arrangements. ©Shogakukan Photo by Hiroshi Okada ">

Rowan berries

Rowan leaves in autumn
Due to the beauty of their autumn leaves and ripe red fruits, they are planted in Hokkaido as garden trees and in rows of trees. ©Shogakukan Photo by Fujio Aoyama ">

Rowan leaves in autumn


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

バラ科(APG分類:バラ科)の落葉高木。高さ7~10メートル。枝に皮目がある。葉は互生し、羽状複葉。小葉は長さ3~7センチメートル、無柄で9~15枚あり、長楕円(ちょうだえん)形または披針(ひしん)形、先はとがり、縁(へり)に鋭い重鋸歯(じゅうきょし)がある。5~7月、枝先に約10センチメートルの複散房状の花序を出し、白色の5弁花を多数開く。雄しべは20本、雌しべは1本で花柱は3~4本、子房は下位。5枚の萼片(がくへん)は内曲する。果実は球形のなし状果で径約5ミリメートル。やや涼しい山地に生え、日本全土、および朝鮮半島、千島、樺太(からふと)(サハリン)に分布する。名は、七度かまどに入れても燃え残るくらい燃えにくいことからついたといわれる。秋の紅葉と赤熟した果実が美しいことで知られる。北海道では並木などに植栽される。同属のナンキンナナカマドS. gracilis (Sieb. et Zucc.) K.Kochは高さ約2メートルと小さく、托葉(たくよう)は葉質で半円形、幅1~2センチメートルと大きい。関東地方以西の本州から九州に分布する。

 ナナカマド属は北半球の、おもに温帯に約100種分布する。

[鳴橋直弘 2020年1月21日]

ナナカマド
日本全土に分布する落葉高木。材は器具の柄、細工物、薪炭などに用いられる©Shogakukan 撮影/岡田 博">

ナナカマド

ナナカマドの花
5~7月、枝先に複散房状の花序を出し、多数の白色5弁花を開く©Shogakukan 撮影/岡田 博">

ナナカマドの花

ナナカマドの果実
球形のなし状果で径約5mm。秋に美しく赤熟する。いけ花にも利用される©Shogakukan 撮影/岡田 博">

ナナカマドの果実

ナナカマドの紅葉
紅葉と赤熟した果実の美しさから、北海道では庭木や並木などとして植栽される©Shogakukan 撮影/青山富士夫">

ナナカマドの紅葉


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