Forest foam herb

from Wikipedia, the free encyclopedia
Forest foam herb
Forest foam herb (Cardamine flexuosa)

Forest foam herb ( Cardamine flexuosa )

Systematics
Eurosiden II
Order : Cruciferous (Brassicales)
Family : Cruciferous vegetables (Brassicaceae)
Tribe : Cardamineae
Genre : Foam Herbs ( Cardamine )
Type : Forest foam herb
Scientific name
Cardamine flexuosa
With.

The forest foam herb ( Cardamine flexuosa ) is a species of foam herb ( Cardamine ) in the cruciferous family (Brassicaceae). It occurs in central Europe scattered to regionally widespread.

description

The herbaceous plant , which is usually annual , and more rarely biennial , reaches a height of around 10 to 50 cm. It grows upright to ascending and often sprouts several stems . At the base it is hairy slightly protruding, usually has four to ten stem leaves and a leaf rosette that remains until flowering. The leaves are pinnate unpaired and usually have three to six pairs of pinna. These are usually clearly stalked. The lower ones are usually broadly ovate to rounded and often indistinct and asymmetrically lobed and blunt-toothed or with entire margins. The upper ones are generally narrower, about 3 to 20 mm long with a slightly larger terminal leaflet and often hairy on the upper side.

The flowers are about 6 to 25 in grapes . The sepals are 1.3 to 2.5 mm long, elliptical, greenish in color and with white skin margins. The petals are white, 2.5 to 4 mm long and spatulate. The flowers usually have six stamens. The pods are about 14 to 25 mm long, 1 to 1.7 mm wide and sit on 4 to 13 mm long, upright, often slightly curved stems. It is not uncommon for these to grow almost parallel to the stem.

The flowering period extends mainly from April to June, occasionally also in autumn.

The number of chromosomes is 2n = 16 or 32.

Occurrence

General distribution

Forest foam herb ( herbarium evidence )

Cardamine flexuosa is found throughout Europe, Asia, and Northeast America. It is a Eurasian suboceanic floral element.

Distribution in Central Europe

The forest foam herb occurs scattered to fairly widespread in Germany. It is only rarely found in East Germany. In the Allgäu Alps, it rises on the southern slope of the Kegelkopf in Bavaria to 1900 m above sea level. In Austria and Switzerland this species is scattered to common.

Location requirements

The forest foam herb grows in mixed beech forest communities and in spring meadows. It prefers moist, nutrient-rich, nitrogen-containing, lime-poor and often clayey soils. In the Alpine region it finds its optimum in societies of the Montio-Cardaminetea class, in Central Europe in societies of the Cardamino-Montion association.

literature

  • Christian Heitz: School and excursion flora for Switzerland. Taking into account the border areas. Identification book for wild growing vascular plants . Founded by August Binz. 18th completely revised and expanded edition. Schwabe & Co., Basel 1986, ISBN 3-7965-0832-4 .
  • Wolfgang Adler, Karl Oswald, Raimund Fischer: Excursion flora of Austria . Ed .: Manfred A. Fischer. Eugen Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6 .
  • Konrad von Weihe (ed.): Illustrated flora. Germany and neighboring areas. Vascular cryptogams and flowering plants . Founded by August Garcke. 23rd edition. Paul Parey, Berlin / Hamburg 1972, ISBN 3-489-68034-0 .
  • Henning Haeupler, Thomas Muer: picture atlas of the fern and flowering plants of Germany . Ed .: Federal Agency for Nature Conservation (=  The fern and flowering plants of Germany . Volume 2 ). Eugen Ulmer, Stuttgart (Hohenheim) 2000, ISBN 3-8001-3364-4 .
  • Erich Oberdorfer : Plant-sociological excursion flora . With the collaboration of Theo Müller. 6th, revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 1990, ISBN 3-8001-3454-3 .

Individual evidence

  1. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 .
  2. ↑ Erhard Dörr , Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching near Munich 2001, ISBN 3-930167-50-6 , p. 591.
  3. ↑ David Aeschimann, Konrad Lauber, Daniel Martin Moser, Jean-Paul Theurillat: Flora Alpina. An atlas of all 4500 vascular plants in the Alps . Volume 1. Paul Haupt, Bern / Stuttgart / Vienna 2004, ISBN 3-258-06600-0 , p. 522.

Web links

Commons : Forest foam herb ( Cardamine flexuosa )  - Album with pictures, videos and audio files