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(First upload on January 1 2013. Last on January 26 2016) [ 日本語 | English ]

Aster L. (シオン) Aster subulatus Michx. (ホウキギク, s.l.) Houkigiku (ホウキギク, 箒菊), wild aster Lifeform: annual/biennial forb Distribution: native to the eastern North America (exotic to Japan) Habitat: disturbed sites, including parking lots and gardens var. subulatus (ホウキギク, s.s.) Leaf: 0.5-1.0 cm wide

Synonyms: Symphyotrichum subulatum (Michx.) G.L.Nesom var. subulatum var. elongatus Bosserdet ex A. G. Jones et Lowry (オオホウキギク) Flower: > 1 cm in diameter var. sandwicensis (A. Gray ex H. Mann) A. G. Jones (ヒロハホウキギク) Leaf: 0.8-2.5 cm wide Hybrids: A. subulatus Michx. var. sandwicensis (A.Gray et H.Mann) A.G.Jones × var. subulatus (ムラサキホウキギク)

Aster subulatus in Japan

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var. subulatus (ホウキギク)

1 2
[1/2] near a ditch at a parking lot in front of the arrival gate of Kobe Airport on September 18 2012.

var. sandwicensis (ヒロハホウキギク)

1 2 3
[1-3] on a paved road adjacent to Hama-rikyu Gardens, Tokyo, on November 13 2015.