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(First upload on July 18 2014. Last on November 5 2019) [ 日本語 | English ]

Trientalis L. (ツマトリソウ) Tsumatorisou (ツマトリソウ, 褄取草), chickweed wintergreen or Arctic starflower Lifeform: perennial forb Distribution: boreal regions in the Northern Hemisphere, including Japan (Hokkaido - Honshu - Shikoku) Habitat: forest edge and mesic grassland Synonyms: Lysimachia europaea (L.) U.Manns et Anderb. Trientalis europaea L. f. ramosa Iljinsky

var. arctica (Fisch. ex Hook.) Ledeb. Kotsumatorisou (コツマトリソウ, 褄取草) Habitat: bog (Sarobetsu) Flower = 1.2 cm in diameter ↔ 1.5-2 mm (T. europaea) Synonyms: Trientalis arctica Fisch. ex Hook. Trientalis europaea L. ssp. arctica (Fisch. ex Hook.) Hultén

Trientalis europaea in Hokkaido

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[1] near a Populus tremula forest in the Kyushu University Experimental Forest of Ashoro Town, June 5 2014.

var. arctica

1 2 3
[1] near a boardwalk near Kushiro Wetland Visitor Center, eastern Hokkaido, on June 5 2019. [2/3] adjacent to the experimental plots of peat moss transplantation in the post-mined peatland of Sarobetsu mire (サロベツ湿原), northern Hokkaido, on June 12 2019.