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(Upload on February 27 2017) [ 日本語 | English ]

Bidens L. (センダングサ) Taukogi (タウコギ, 田五加木), three-lobed beggarticks, leafy-bracted beggarticks, etc. Lifeform: annual forb, with 30-100 m tall weed for paddy field Distribution: most regions in the Northern Hemisphere, including Japan Habitat: mesic sites, such as paddy fields

Stem: no hair Seed dispersal: animal (external) by hooked barbs Chromosome number: 2n = 48 Synonyms: Bidens acuta (Wiegand) Britton Bidens comosa (A. Gray) Wiegand ssp. bullatus (L.) Rouy ssp. tripartita, (or var. tripartita) the type var. repens (D. Don) Sherff (ハイタウコギ)

Bidens tripartita in Japan

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[1-3] along a paved road near Muroran Marine Station, Muroran City, on September 12 2016.