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(First upload on January 26 2012. Last on February 25 2023) [ 日本語 | English ]

Aster L. (シオン) Nebarinogiku (ネバリノギク, 粘リ野菊), New England aster Amerikashion (アメリカシオン, 亜米利加紫苑) Lifeform: ruderal perennial Distribution: native to eastern North America (exotic to Japan)

Habitat: grasslands, roadsides, etc. Flora on Mount Usu Hokkaido Blue List: A3 (assigned as 100 of the worst invasive alien species in Japan) Hair: dense, in particular, on the stems (⇔ Aster novi-belgii) Synonyms Symphyotrichum novae-angliae (L.) G. L. Nesom, when separated

Aster novae-angliae on Mount Usu

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[1] In a crater basin close to the Nishiyama Craters on on October 1 2011. [2] within a flower bed under a street tree in N18/W4, North Ward, Sapporo, on October 17 2022. [3/4] at a promenade between the Kompira Crater Groups and the park of relics damated by the 2000 eruptions on September 18 2013. I think this plant is expanding its distribution rapidly in the southern part of Hokkaido. [5/6] near the K-1 Crater in the Nishiyama Craters on Mount Usu on September 14 2016. [7-9] at the First Outlook in the Nishiyama Craters on September 21 2021.Records: at Tarumae Service Station along Hokkaido Central Highway on September 9 2019.