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(First upload on February 24 2014. Last on December 26 2016) [ 日本語 | English ]

Potentilla norvegica L.






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

Potentilla L. (キジムシロ)
Ezonomitsumotosou (エゾノミツモトソウ, 蝦夷水源草), Norwegian cinquefoil, or rough cinquefoil
Lifeform: annual, biennial or short-lived perennial forb
Distribution: native to Europe and perhaps North America (now widespread in the world, including Hokkaido and Alaska)

Hokkaido Blue List: A3, probably introduced in Meiji Era

Habitat: disturbed open lands, such as roadsides - grasslands - thickets
Leaf: 3-5 leaflets (5 at the base)
Flower: petal < calyx
Stipule: base gamophyllous with petiole Inflorescence: axillary bracteate cymes
索引
ssp. norvegica
P. cryptotaeniae Maxim. (ミツモトソウ)
Lifeform: Perennial
Flower: petal ≈ calyx
Leaf: three leaflets throughout
Stipule: middle and upper parts gamophyllous with petiole
ssp. monspeliensis (L.) Asch. et Graebn. (Hultén 1968), Alaska

Potentilla norvegica in the Northern Hemisphere


ssp. monspeliensis

ST1 ST2 ST3
[1-3] at a roadside near the campus of University of Alaska Fairbanks on August 17 2013.

ssp. norvegica

ST4 ST5 ST6
ST7 ST8 ST9
[4-6] in a waste land, N14/W3, North Ward, Sapporo, on August 11 2015. [7-9] along a paved road in N24/E2, East Ward, Sapporo, on August 19 2016.

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