Ranunculaceae

Japanese goldthread

Coptis japonica (Thunb.) Makino

Family: Ranunculaceae
Genus: Coptis

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Japanese goldthread (Coptis japonica) — FlowerPhoto: ITÔ, Hiroki, CC BY 4.0, from iNaturalist

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Common names

By language (4)

Arabic: كوبتس اليابان
Chinese: 日本黃連, 日本黄连
English: Japanese goldthread
Japanese: オウレン, 黄連

Synonyms

Coptis anemonifolia Siebold & Zucc.
Coptis anemonifolia var. dissecta Yatabe
Coptis brachypetala Siebold & Zucc.
Coptis brachypetala var. major Miq.
Coptis japonica f. viridiflora Honda ex Kadota
Coptis japonica var. anemonifolia (Siebold & Zucc.) H.Ohba
Coptis japonica var. dissecta (Yatabe) Nakai ex Satake
Coptis japonica var. major (Miq.) Satake
Coptis occidentalis var. japonica Huth
Coptis orientalis Maxim.
Thalictrum japonicum Thunb.

Flowers

In flower: February to March (from 15 flowering iNaturalist observations worldwide)

Photos

FlowerPhoto: ITÔ, Hiroki, CC BY 4.0, from iNaturalist
FlowerPhoto: ITÔ, Hiroki, CC BY 4.0, from iNaturalist
FruitPhoto: Timur Kalininsky, CC BY 4.0, from iNaturalist
FruitPhoto: ITÔ, Hiroki, CC BY 4.0, from iNaturalist
Photo: Qwert1234, CC BY-SA 4.0, from Wikimedia Commons
Photo: 松岡明芳, CC BY-SA 3.0, from Wikimedia Commons
Photo: KENPEI, CC BY 3.0, from Wikimedia Commons
Photo: KENPEI, CC BY 3.0, from Wikimedia Commons
Photo: Qwert1234, CC BY-SA 3.0, from Wikimedia Commons
Photo: Qwert1234, CC BY-SA 3.0, from Wikimedia Commons
Photo: Qwert1234, CC BY-SA 3.0, from Wikimedia Commons
Photo: Qwert1234, CC BY-SA 3.0, from Wikimedia Commons

More in Coptis

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.