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Shiro TSUYUZAKI
Plant community ecology / Environmental conservation

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

(Update on July 14 2011)

Chamaele decumbens (Thunb.) Makino
[Apiaceae (Umbelliferae)]

Sentousou (セントウソウ, 仙洞草)

Lifeform : perennial forb < 35 cm
Distribution: endemic to Japan
Habitat: forest floor
Chromosome number: 2n = 22

Synonyms

Sium decumbens Thunb.


Chamaele Miq. in Japan

One species is distributed in Japan

C. decumbens (Thunb.) Makino (セントウソウ)

f. dilatata Satake et Okuyama (イブキセントウソウ)
f. flabellifoliata Y. Kimura (オオギバセントウソウ)
f. japonica (Y. Yabe) Ohwi (ミヤマセントウソウ)
var. gracillima H. Wolff (ヒナセントウソウ)
var. micrantha Masam. (ヤクシマセントウソウ)


Chamaele decumbens in Hokkaido

ST ST
[Left] a shoot. [Right] close-up a bit. In Tomakomai Experimental Forest on May 21 2005.


References

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