Jishibari - Binding

Japanese: ジシバリ - じしばり
Jishibari - Binding

A perennial plant of the Asteraceae family (APG classification: Asteraceae). Also called Iwanigana. It overwinters in rosettes and reproduces in spring by extending long, thin runners above ground level. Its name comes from the way that roots develop at each node of the runners. The leaves are oval and thin, and when cut, they exude a milky liquid. From April to June, short flower stalks bear yellow flower heads measuring about 2 cm in diameter. The florets consist of only ray flowers. It commonly grows on roadsides and farmland, and is distributed throughout Japan, the Korean peninsula, Taiwan, and China. The closely related I. japonica (Burm.f.) Nakai ( I. debilis A.Gray) often grows on ridges. The leaves are oval with a notch at the bottom, and the flower heads are rather large.

[Tatsuyoshi Morita February 18, 2022]

[Reference] | Rosette

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

キク科(APG分類:キク科)の多年草。イワニガナともいう。ロゼットで越冬し、春に細く長い走出枝を地表に伸ばして繁殖する。走出枝の節ごとに発根するようすから名がついた。葉は卵円形で薄く、切ると乳液が出る。4~6月、短い花茎に黄色で径約2センチメートルの頭花をつける。小花は舌状花のみからなる。道端や畑地などに普通に生え、日本全土、および朝鮮半島、台湾、中国に分布する。近縁種のオオジシバリI. japonica (Burm.f.) Nakai(I. debilis A.Gray)は畔(あぜ)に多く生える。葉は楕円(だえん)形で下部に切れ込みがあり、頭花はやや大きい。

[森田龍義 2022年2月18日]

[参照項目] | ロゼット

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