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(First upload on November 9 2011. Last on June 17 2019) [ 日本語 | English ]

Coptis trifolia (L.) Salisb.






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Coptis Salisb. (オウレン)
Mitsuba-ouren (ミツバオウレン, 三葉黄蓮), threeleaf goldthread
Katabami-ouren (カタバミオウレン)

Mitsuba: meaning three leaves

Lifeform: evergreen perennial forb
Distribution: circumboreal regions, including northern Japan

This species in Honshu is categorized into alpine plant

Habitat: wetlands - forest floors (usually in needle-leaved forests) in the case of Japan

Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)

Chromosome number: 2n = 18
Synonyms:

Coptis groenlandica Fernald

f. plena K. Imai (タマザキミツバオウレン)
f. semiplena (Miyabe et Tatew.) Okuyama (ヤエザキミツバオウレン)
索引

Coptis trifolia in Hokkaido


The white organs are sepals, not petals.

ST1 ST2 ST3
ST4 ST5 ST6
[1-4] along a boardwalk in a post-mined peatland clsoe to the new visitor center established in Sarobetsu mire (サロベツ湿原) (8 m elevation). [1] on June 14 2011. [2] on May 24 2015. [3] on May 28 2017. [4] in an area mined in 1982 on June 12 2019. [5/6] at a trail in a Picea glehnii forest (アカエゾマツ林) on Mount Meakan (雌阿寒岳), eastern Hokkaido, on June 25 2013.

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