Buttercup - Buttercup

Japanese: キンポウゲ - きんぽうげ
Buttercup - Buttercup

A perennial plant of the Ranunculaceae family (APG classification: Ranunculaceae). The stem is 30-60 cm tall, erect, branches at the top, and densely covered with pubescence. The leaves are simple and have 3-5 lobes, and are called umanoashigata (horse leg shape) because of their circular shape, which is the official Japanese name. Buttercup was originally the name of a cultivated double-flowered plant. The flowers are golden yellow, about 2 cm in diameter, and grow in sparse racemes from April to June. The sepals are green and the five petals are very shiny. This is because a layer of cells containing yellow carotenoid pigments is located beneath the layer of cells densely containing starch granules, which reflects sunlight. The fruit is an achene, and the tip of the style does not bend. It commonly grows in mountainous and hilly areas throughout Japan. It is a poisonous plant, but is also used for medicinal purposes. There are approximately 550 species of Ranunculaceae in the world, with 27 species growing wild in Japan. These are divided into two groups: the aquatic white-flowered buttercups and the terrestrial yellow-flowered buttercups.

[Yuichi Kadota March 18, 2020]

Buttercup
From April to June, golden yellow flowers bloom in sparse racemes. The five petals are very shiny. Also known as Umanoashigata (horse leg shape). ©Seishohmaru ">

Buttercup


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

キンポウゲ科(APG分類:キンポウゲ科)の多年草。茎は高さ30~60センチメートル、直立して上部で分枝し、開出毛が密生する。葉は3~5中裂する単葉で、円形であるためにウマノアシガタ(馬脚形)とよばれ、こちらが正式な和名である。キンポウゲはもともとは八重咲きの栽培品の呼び名である。花は黄金(こがね)色、直径約2センチメートルで、4~6月、まばらな総状花序につく。萼片(がくへん)は緑色、花弁は5枚で強い光沢がある。これは、黄色のカロチノイド色素を含む細胞層の下に、デンプン粒を密に含んだ細胞層があって、太陽光を反射するためである。果実は痩果(そうか)で、花柱の先は曲がらない。日本全土の山地や丘陵に普通に生える。有毒植物であるが、薬用ともする。キンポウゲ属は世界に約550種あり、日本には27種が自生し、水生で花が白色のバイカモ類と、陸生で花が黄色のキンポウゲ類の2群がある。

[門田裕一 2020年3月18日]

キンポウゲ
4~6月、まばらな総状花序に黄金色の花をつける。花弁は5枚で強い光沢がある。別名ウマノアシガタ(馬脚形)©Seishohmaru">

キンポウゲ


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