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(Upload on April 16 2017) [ 日本語 | English ]

Erigeron L. (ムカシヨモギ) Arechiyomogi (アレチノギク, 荒地野菊), flax-leaf fleabane or wavy-leaf fleabane Lifeform: annual or biennial forb, develping rosettes, with 30-50 cm tall weed (雑草) Distribution: native to the South America (probably introduced in middle Meiji Era)

Habitat: roadsides, grasslands, meadows, etc. ⇒ biological invasion (生物学的侵入) Seed dispersal: wind Leaf/stem: dense, rough hair with rough teeth Synonyms: Conyza bonariensis (L.) Cronquist

Erigeron bonariensis in Japan

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[1-3] near the Waseda Station of Tokyo Municipal Electric Railway, Tokyo, on March 15 2017.