(First upload on November 16 2009. Last on December 4 2014) [ 日本語 | English ]

Bidens frondosa L.

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

Bidens L. (センダングサ)
Amerikasendangusa (アメリカセンダングサ, 亜米利加栴檀草), (devil's) beggartick
Seitakataukogi (セイタカタウコギ, 背高田五加木)
Lifeform: annual forb
Distribution: native to North America (exotic to Japan)

Hokkaido Blue List: A3

Habitat: ruderal, such as roadsides

Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)
→ Locality list (標本整理簿)

Stem: section = square
Seed dispersal: animal (external) by hooked barbs
Chromosome number: 2n = 24, 48 or 72

Bidens frondosa in Hokkaido



Hoyo4 ST5
[1/4b] at the backyard of the Faculty of Engineer, Hokkaido University, on October 7 2014. [2-4] near the former Yuei Dormitory, HU, on August 31 2012. [5] at Denshinhama Coast, Muroran City, on September 17 2013. Discard: at N18/W4, North Ward, Sapporo City, on October 13 2009.