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(First upload on Nov. 18 2008. Last on June 9 2023) [ 日本語 | English ]

Chelidonium Tourn. ex L. (クサノオウ) One species (controversial) C. majus L. Kusano-ou (クサノオウ, 草ノ黄/草ノ王/瘡ノ王), s.l., greater celandine Lifeform: annual forb Seed dispersal: myrmecochory (ant dispersal) by producing elaiosome Poison: yellow latex sap, containing alkaloids ssp. asiaticum H. Hara kusano-ou (クサノオウ, s.s.) Distribution: Eurasia

Habitat: grassland - forest edge HUSTEP: Plants and Plant communities in Japan (flora list) Chromosome number: 2n = 10 or 12 Synonyms: Chelidonium majus L. var. asiaticum (H. Hara) Ohwi ex W. T. Lee Chelidonium majus L. var. hirsutum Trautv. et C. A. Mey. Chelidonium asiaticum (H. Hara) Krahulc. ssp. majus Common name: ヨウシュクサノオウ Distribution: Europe - West Asia

Chelidonium majus in Hokkaido

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1 2 3
4 5 6
[1-2] at a way to go Abuta Shrine, southern Hokkaido, on June 6 2013. [3] at Yachidamo Park (Yachidamo = Fraxinus mandshurica), N28E4, East Ward, Sapporo, on May 31 2011. [4] Frutis seen in Hokkaido University Campus on June 22 2011. The seeds with elaiosome are contained in the fruits. [5/6] rosettes at the backyard of Toya Lake Experimental Station on April 14 2023. Records: In Hokkaido University Campus on July 18 1998. At a forest edge close to Keiteki-no-mori Forest (恵迪の森) on May 21 2009)