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(First upload on October 28 2014. Last on August 14 2022) [ 日本語 | English ]

Potentilla L. (キジムシロ) P. anserina L. (エゾツルキンバイ, s.l., 蝦夷蔓金梅 or ヨウシュツルキンバイ, 洋種蔓金梅), silverweed cinquefoil or common silverweed Lifeform: perennial forb, characterized by creeping red stolons Distribution: widespread in the temperate Northern Hemisphere Habitat: sandy or gravelly soils Leaf: 13-19 leaflets Synonyms: Argentina anserina (L.) Rydb. (Argentina Hill.)

ssp. pacifica (Howell) Rousi (エゾツルキンバイ), Pacific silverweed Distribution in Japan: northern Honshu and Hokkaido Habitat: salt marsh near seacoast Synonyms: Argentina pacifica (Howell) Rydb. Potentilla pacifica Howell ssp. anserina (トウツルキンバイ): not in Japan ssp. egedii (Wormsk. ex Hornem.) Hiitonen, Eged's silverweed: not in Japan Synonyms: Argentina egedii (Wormsk.) Rydb.

Potentilla anserina in Hokkaido

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ssp. pacifica

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[1-3] at a riverside near Akkeshi Waterfowl Observation Center, eastern Hokkaido, on July 3 2014. [4-6] along a walkboard to go Todowara in Notsuke Peninsula, eastern Hokkaido, on August 28 2020. [7-9] a flower developing six petals along Atsuma Coast (浜厚真), central Hokkaido, on August 2 2022.