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(First upload on December 12 2017) [ 日本語 | English ]

Rudbeckia laciniata L.






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

Rudbeckia L. (オオハンゴンソウ)
Oh-hangonsou (オオハンゴンソウ, 大反魂草), cutleaf coneflower
Lifeform: perennial forb
Distribution: exotic to Japan

introduced to Japan for gardening in the middle of Meiji Era
invasive alien species (特定外来生物)
Hokkaido Blue List: A2

Habitat: widespread, in particular, in disturbed sites, e.g., roadsides and skislopes (Tsuyuzaki 2005)
Seed: developing seedbank
var. hortensis Bailey (ヤエザキオオハンゴンソウ / ハナガサギク)
索引

Rudbeckia laciniata in Hokkaido


ST1 ST2 ST3
ST4 ST5 ST6
[1] a yellow world at Toya Lake Experimental Station, Hokkaido University, on August 29 2017. [2/3] on August 21 2007 at Toya Lake Station (the former location), Muroran City. [4] near the training hall of Japanese archery, Hokkaido University, on July 14 2014. [5] along Sakushukotoni River in the experimental farm of Hokkaido University, Sapporo, on July 28 2017. [6] along the shore of Echigo Pond in Ebetsu City on October 8 2017.

var. hortensis

ST1 ST2
[1/2] at a small hill close to Denshin-hama, Muroran City, on August 20 2012.

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