(First upload on January 21 2010. Last on October 9 2019) [ 日本語 | English ]

Galinsoga ciliata (Raf.) Blake

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

Galinsoga Ruiz et Pav. (コゴメギク)
Hakidamegiku (ハキダメギク, 掃溜菊), shaggy soldier
Life form: weedy annual forb
Distribution: Tropical American Continent (exotic to Japan)

Hokkaido Blue List: B

Habitat: waste grounds, cultivated fields, and roadsides
Seed dispersal: wind
Chromosome number: 2n = 16, 24 or 32

Galinsoga quadriradiata Ruiz et Pav., often used

In general:
Hair on stem: G. parviflora < G. ciliata
Leaf size: G. parviflora < G. ciliata
Leaf tooth: G. parviflora < G. ciliata

Galinsoga ciliata in Asia

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[1] a patch on September 25 2009 in front of the main gate of Hokkaido University of Education at Hakodate. [2] close-up of inflorescences on October 14 2009 at N23/W2, Higashi Ward, Sapporo. [3] in a shaggy-soldier grassland on the north slope of Mount Namsan in Seoul City, Korea, on September 13 2012. This species is exotic to Korea, as well as to Japan. I believe that this area should be conserved well. [4] in a waste land near Muroran Marine Station, Muroran City, on September 12 2016. [5/6] under a street tree near Toyoko Inn - Kanda/Akihabara, Tokyo, on December 17 2016. [7] in the hometown forest of Haramachida, Tokyo, on December 10 2017. [8] near a flower garden in front of an apartment, N13/W2, North Ward, Sapporo, on October 13 2018. [9] between Okachimachi and Ichigaya, Tokyo, on January 8 2019. [10] seedllings near the south gate of Hokkaido University on October 1 2019.