A deciduous shrub in the Saxifragaceae family (APG classification: Hydrangeaceae). The leaves are opposite and short-stalked. The leaf blade is oblong-ovate or ovate, 5-10 cm long, pointed at the tip, and has sparse small sawtooth along the edge. Five prominent veins emerge from the base. In June and July, the plant produces large white flowers in clusters at the ends of the branches. The flowers are tetrameric, with four sepals and four petals. The petals are oblong-ovate and open, with a corolla about 2.7 cm in diameter. There are about 20 stamens. Each style is about 8 mm long and has four lobes at the tip. The ovary is inferior. The name refers to the flower shape of the Deutzias, which resembles that of a plum blossom, but the plant is not of the Deutzias genus, but of the Philadelphus genus. It grows along mountain paths and is distributed throughout Honshu, Shikoku, and Kyushu. [Michio Wakabayashi March 22, 2021] The leaf blade is oblong-ovate or ovate, with five prominent veins emerging from the base. From June to July, the plant produces large white flowers in clusters at the ends of the branches. ©Shogakukan Photo by Masatoshi Hirose "> Philadelphus Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
ユキノシタ科(APG分類:アジサイ科)の落葉低木。葉は対生し、短柄がある。葉身は長楕円(ちょうだえん)状卵形または卵形で、長さ5~10センチメートル、先はとがり、縁(へり)にはまばらに小さな鋸歯(きょし)がある。基部から出る5本の葉脈が目だつ。6~7月、枝先にやや大きい白色花を総状につける。花は4数性で、萼(がく)裂片、花弁ともに4枚。花弁は倒広卵形、開出し、花冠は径約2.7センチメートル。雄しべは約20本。花柱は1本で約8ミリメートル、先端は4裂する。子房は下位。名は、花形がウメの花に似ているウツギの意味であるが、ウツギ属ではなく、バイカウツギ属の植物である。山路に生え、本州、四国、九州に分布。 [若林三千男 2021年3月22日] 葉身は長楕円状卵形または卵形で、基部から出る5本の葉脈が目だつ。6~7月、枝先にやや大きい白色花を総状につける©Shogakukan 撮影/広瀬雅敏"> バイカウツギ 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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