Norwegian cinquefoil

from Wikipedia, the free encyclopedia
Norwegian cinquefoil
Norwegian cinquefoil (Potentilla norvegica)

Norwegian cinquefoil ( Potentilla norvegica )

Systematics
Eurosiden I
Order : Rose-like (rosales)
Family : Rose family (Rosaceae)
Subfamily : Rosoideae
Genre : Finger herbs ( potentilla )
Type : Norwegian cinquefoil
Scientific name
Potentilla norvegica
L.

The Norwegian finger herb ( Potentilla norvegica ) is a plant from the genus of Potentilla ( Potentilla ) in the family of Rosaceae (Rosaceae). It is very rare in Central Europe .

description

The Norwegian cinquefoil is an herbaceous plant that usually reaches heights of 20 to 50 (10 to 70) cm. The upright to ascending, branched stem is protruding and somewhat stiffly haired and richly leafed; it is green but turns red when exposed to intense sunlight. The alternate, long-stemmed leaves are three-fold finger-shaped, the lower ones also up to five-fold and. The leaflets are elliptical to obovate, 2 to 6 cm long, usually deep and roughly serrate to almost pinnate and loosely to fairly densely hairy. The stipules are usually four- to five-lobed and up to 3 cm long.

Norwegian cinquefoil, illustration

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

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

The number of chromosomes is 2n = 70.

Occurrence

General distribution

Norwegian cinquefoil is found in the temperate and boreal zones of Eurasia and North America. It is probably not original in Western and Central Europe west of the Elbe, but introduced. Occurring south to the southern edge of the Alps. It is absent in the whole of the Mediterranean and Asia Minor .

Norwegian cinquefoil ( Potentilla norvegica )
Sliced ​​collective fruit: the style is clearly thickened at the base.

Distribution in Germany

The Norwegian cinquefoil is a little more common only in the very west and also in the east of Germany. Otherwise rare and inconsistent.

Potentilla norvegica appears inconsistently here and there for a short time and is often only introduced. It could only be considered naturalized in the eastern part of Germany.

Location claims and socialization

Potentilla norvegica grows as a pioneer and ruderal plant on nutrient-rich, fresher, mostly lime-poor mineral and peat soils. In particular, it can be found on muddy bank areas, in bog ditches, on roadsides, in gravel pits and on train stations and ports.

The Norwegian cinquefoil occurs in Central Europe in societies of the associations Sisymbrion, Agropyro-Rumicion, Nanocyperion or Bidention.

literature

Individual evidence

  1. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 540.

Web links

Commons : Norwegian cinquefoil ( Potentilla norvegica )  - Collection of images, videos and audio files