A general term for the genus Delphinium in the Ranunculaceae family (APG classification: Ranunculaceae). English name: larkspur. An upright perennial or annual herb. The leaves are stalked and trifoliate or palmate. The flowers grow in racemes, spikes, or panicles, and are mainly blue-purple, red-purple, pale pink, or white. There are five petals, the rear of which elongate to form a spur. There are 2 to 4 petals, the upper two of which are within the spur. The genus name comes from the Greek word delphin (dolphin), referring to the shape of the flower. It grows in mountainous areas, and there are about 200 species distributed throughout Asia, Europe, and North America, with several thousand horticultural varieties. In Japan, autumn-sown annual Consolida ajacis (L.) Schur ( D. ajacis L.) was widely cultivated, but in recent years, tall double-flowered species (2 meters tall, with flower spikes 1 meter long) bred from D. elatum L., D. formosum Boiss. et Huet., D. grandiflorum L. var chinense Fisch, and other species, as well as dwarf species for potted plants, have become popular. Fertile, well-drained, slightly alkaline soil is ideal. Exposure to sunlight is best. Some plants in this genus contain delphenine and other alkaloids. [Ryuji Suzuki March 18, 2020] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
キンポウゲ科(APG分類:キンポウゲ科)デルフィニウム(オオヒエンソウ)属の総称。英名ラークスパーlarkspur。直立性の多年草または一年草。葉は有柄で3出複葉または掌状。花は総状、穂状、円錐(えんすい)花序につき、おもに青紫、赤紫、淡紅、白色などの花を開く。萼片(がくへん)は5枚、花弁状で、後部のものは伸びて距(きょ)となる。花弁は2~4枚、上部の2枚は萼距の中にある。属名はギリシア語のdelphin(イルカ)により、花の形からついた。山地に生え、アジア、ヨーロッパ、北アメリカに約200種分布し、園芸品種は数千種に上る。日本では秋播(ま)き一年草のヒエンソウ(飛燕草)Consolida ajacis (L.) Schur(D. ajacis L.)が多くつくられていたが、近年はD. elatum L.、D. formosum Boiss. et Huet.、D. grandiflorum L. var chinense Fisch、などを材料として育種した八重咲きの高性種(高さ2メートル、花穂は長さ1メートル)や鉢物用の矮性(わいせい)種が盛んに栽培されるようになった。土質は排水のよい肥沃(ひよく)な弱アルカリ性土壌が適する。日光に当てるとよい。本属の植物はデルフェニンほかのアルカロイドを含むものがある。 [鈴木龍二 2020年3月18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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