(First upload on August 23 2013. Last on September 1 2018) [ 日本語 | English ]
Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily
HOME > Plant list (植物リスト) > Oxalidaceae (カタバミ科) > Oxalis acetosella
Oxalis L. (カタバミ)Komiyamakatabami (コミヤマカタバミ, 小深山片喰), common wood sorrelLifeform: perennial forb < 20 cm high Distribution: Europe and parts of Asia, including northern Japan Habitat: forest floor, in particula, on shady needle-leaved forests in subalpine zones Leaf: radical with 3-10 mm long stalk, sour → oxalic acid Leaflet: rounded, 7-12 mm wide Calyx: 4-5 mm long Flower: white - pink (May - June), the stalk 4-10 cm long |
Rhizome: a few scales on the top, thin and stoloniferous with sparse nodes
Seed dispersal: self
Cf. O. griffithii Edgew. et Hook. f. (ミヤマカタバミ): distributed in Japan except Hokkaido ssp. taemonii (Yamam.) S. F. Huang et T. C. Huang (センザンカタバミ)var. acetosella f. vegeta (Tatew.) M. Mizush. (エゾミヤマカタバミ) var. longicapsula Terao (ヒョウノセンカタバミ): south to Hiyama District, Hokkaido, large shoot and oblong fruit, leaflet = 2.5-5.0 cm long |
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[1] on a trail to Matsuyama Bog, northern Hokkaido, on June 27 2018. [2/3] at a trail to go Mount Higashi-Nupukaushinupuri (1252 m elevation), eastern Hokkaido, on June 27 2013. [4] on the foot of Mount Onnebetsu, northeastern Hokkaido on June 27 1996. [5/6] in the Dell Forest, Changbai Mountain, Jilin Province, China, on June 12 2017. Observed on Mount Eniwa.