White kerria - White kerria

Japanese: シロヤマブキ - しろやまぶき
White kerria - White kerria

A deciduous shrub of the Rosaceae family (APG classification: Rosaceae). It grows to a height of 1-2 meters. The branches are well branched. The leaves are opposite, simple, ovate, pointed, and have serrated edges. In April and May, a single white, 4-petaled flower measuring 3-4 cm in diameter blooms at the end of a new branch. There are four sepals with small serrated edges. The same number of accessory sepals are linear and very small. There are many stamens and four pistils. The fruit is an achene-shaped drupe that ripens black and is shiny. It grows rarely in the Chugoku region, but is also distributed in the Korean peninsula and China. It is often planted in gardens. The genus Kerria is a small genus with only this species in the world, and is the only genus in the Rosaceae family with opposite leaves. In China, the fruit and roots are used for medicine.

[Naohiro Naruhashi January 21, 2020]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

バラ科(APG分類:バラ科)の落葉低木。高さ1~2メートル。枝はよく分枝する。葉は対生し、単葉で卵形、先はとがり、縁(へり)に鋸歯(きょし)がある。4~5月、新枝の先に、白色で径3~4センチメートルの4弁花を1個開く。萼片(がくへん)は4枚で、縁に小さい鋸歯がある。副萼片も同数、線形で非常に小さい。雄しべは多数、雌しべは4本、果実は痩果(そうか)状核果で黒く熟し、光沢がある。中国地方にまれに生育するほか、朝鮮半島および中国に分布する。よく庭園に植えられる。シロヤマブキ属は、世界に本種のみの小さな属で、バラ科で対生葉をもつ唯一の属である。中国では果実および根を薬用とする。

[鳴橋直弘 2020年1月21日]

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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