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Shiro TSUYUZAKI
Plant community ecology / Environmental conservation

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

(Update on November 9 2011)

Threeleaf goldthread
Coptis trifolia (L.) Salisb. [Ranunculaceae]

Mitsuba-ouren (ミツバオウレン, 三葉黄蓮)

Lifeform: perennial forb
Distribution: circumboreal regions, including northern Japan
Habitat: wetland - forest floor
Chromosome number: 2n = 18

Varieties

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)


Coptis trifolia in Hokkaido

The white organs are sepals, not petals.

ST1 ST2
[1-2] along a boardwalk in a post-mined peatland clsoe to the new visitorr center established in Sarobetsu mire, on June 14 2011.

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References

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