Potentilla norvegica

Norwegian cinquefoil ( Potentilla norvegica )

The Norwegian cinquefoil ( Potentilla norvegica ) is a flowering plant in the rose family ( Rosaceae ). It comes in Central Europe quite rare.

Description

The Norwegian cinquefoil is an herbaceous plant that reaches the plant height usually 20 to 50 (10 to 70) cm. The upright to ascending, branched stem is hairy upstanding and slightly stiff and reichbeblättert; he is green but turns red in strong sunlight. The alternate, long-stalked leaves are trifoliate finger -shaped, the lower and up to fünfzählig and. The leaves are elliptic to obovate, 2-6 cm long, pinnate to nearly everyone's favorite hairy usually cut deep and rough up pretty tight. The stipules are usually four-to five-lobed and up to 3 cm long.

The terminal, Rispige inflorescence contains multiple blooms. The hermaphroditic, radial symmetry, five petals have a diameter of about 1.2 cm. The outer sepals are longer than the sepals, they increase also of about 6 to 14 mm. The egg-shaped, pointed sepals enlarge 4-5 mm to fruit maturity at 8 to 10 mm. The five petals are yellow, obovate, emarginate shallow, 3 mm wide and with a length of 3.5 mm usually shorter than the sepals. There are (15 to ) usually 20 stamens present. The Norwegian cinquefoil flowers from June to September.

The fruit stalk is upright. The brownish achenes is up to 1.3 mm long.

Occurrence

Popularization

The Norwegian cinquefoil is found in the temperate and boreal zones of Eurasia and North America. Probably it is in Western and Central Europe west of the Elbe is not original, but introduced. To the south, occurring up to the Alpine region. You're missing the entire Mediterranean region and Asia Minor.

Distribution in Germany

The Norwegian cinquefoil is slightly more likely to be found only in the far west and in the east of Germany. Otherwise, rare and unstable.

Potentilla norvegica appeared rather unstable here and there for a short time and is often probably only introduced. Only in the eastern part of Germany, it could be considered naturalized.

Habitat requirements

Potentilla norvegica grows as a pioneer and ruderal on rich, fresher, mostly calcium-poor mineral and peat soils. In particular, it is found on muddy riverside areas, in bog ditches, along roadsides, gravel pits and on railway station and port areas.