Hain chickweed

from Wikipedia, the free encyclopedia
Hain chickweed
Chickweed (Stellaria nemorum subsp.nemorum)

Hain-chickweed ( Stellaria nemorum subsp. Nemorum )

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Carnation family (Caryophyllaceae)
Subfamily : Alsinoideae
Genre : Star chickweed ( Stellaria )
Type : Hain chickweed
Scientific name
Stellaria nemorum
L.

The grove chickweed ( Stellaria nemorum ), also called forest chickweed , is a species of the carnation family (Caryophyllaceae).

description

This perennial herbaceous plant reaches heights of about 20 to 60 cm. The stem grows more or less ascending, is slack and hairy glandular-shaggy above (rarely bald). In the upper part it is soft-haired all around. The leaves are ovate and pointed, the lower ones are stalked and blunt or heart-shaped at the base. They are eyelashed on the edge.

The petals are white, two columns almost to the base and about twice as long as the lanceolate sepals. The Hain chickweed flowers mainly from May to September.

The chromosome number of the species is 2n = 26 in both subspecies.

Possible confusion

From the similar in habit water chickweed ( Stellaria aquatica ), the Hain-chickweed differs among other things by the number of pen : There are usually five passing urine gut and three in Hain-chickweed. Furthermore, in contrast to the water intestine, the Hain chickweed has long-stalked lower stem leaves, as well as a stem with rounded petioles and hairy below.

ecology

The grove chickweed is a hemicryptophyte with widely creeping runners. Pollinators are flies and beetles . The warty seeds are up to 1.3 mm in size; there is swimming spread and spreading as a wind spreader.

Location claims and distribution

Stellaria nemorum subsp. nemorum ( herbarium evidence )
Chickweed ( Stellaria nemorum )

The chickweed grows in perennial mountain forests or subalpine knee wood scrub, in deep layers in creek-side alder forests on cool, seepage-fresh, moist, nutrient- and base-rich, lime-poor, humus-rich loam and clay soils. It is a character species of the Stellario-Alnetum in Central Europe, but also occurs in other societies of the Alno-Ulmion association, in those of the Carpinion, Adenostylion or Rumicion alpini associations and in the Aceri-Fagetum.

Stellaria nemorum occurs from Scandinavia to northern southern Europe. To the east it penetrates to Russia and the Caucasus. It is a north-subatlantic floral element.

In Austria it occurs frequently to scattered. It is common in Switzerland. The Hain chickweed is common in Germany. It is only rare in the northwest. In the Allgäu Alps it rises at the summit of the Hohen Ifen in the Kleiner Walsertal in the subspecies subsp. nemorum up to 2230 m above sea level.

Systematics

There are two subspecies:

  • Actual Hain-chickweed ( Stellaria nemorum L. subsp. Nemorum )
  • Mountain Chickweed or Spiny Chickweed ( Stellaria nemorum subsp. Montana (Pierrat) Berher , Syn .: Stellaria montana Pierrat , Stellaria nemorum subsp. Glochidisperma Murb. , Stellaria glochidisperma (Murb.) Freyn , Stellaria nemorum subsp. Circaeoides A.F. Black )

literature

Individual evidence

  1. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition, pages 372-373. Stuttgart, Verlag Eugen Ulmer, 2001. ISBN 3-8001-3131-5
  2. ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching 2001, ISBN 3-930167-50-6 , p. 491.
  3. ↑ a b Karol Marhold: Caryophyllaceae. Stellaria . In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity . Berlin 2011.

Web links

Commons : Hain-Sternmiere  - album with pictures, videos and audio files