Pale chickweed

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Pale chickweed
Pale chickweed (Stellaria apetala)

Pale chickweed ( Stellaria apetala )

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

The pale chickweed ( Stellaria apetala ), also known as pale chickweed , is a species of the carnation family (Caryophyllaceae).

description

The stem has a line of hairs.
Stem with ciliate leaves on the petiole
blossom
Flower with sepals, stunted petals and ovary with three pistils

The annual herbaceous plant reaches heights of growth of up to 20 cm and is light green or yellowish-green in color. The stem is hairy in one row. The leaves are ovate, pointed to a short point, the lower leaves are more or less stalked and hardly longer than 1 cm.

The flower stalks are hairy in one row. The sepals are pointed and 2 to 3.5 mm long. The petals are absent or are rarely tiny. Usually this type has one to three gray purple anthers . The fruit stalks are short and upright. The seeds have a size of about 0.8 mm, are yellowish brown and have rounded bumps.

The flowering period extends from March to May.

The number of chromosomes is 2n = 22.

Occurrence

Pale chickweed

The pale chickweed grows in ruderal communities, on paths and house walls on mostly moderately dry, nutrient-rich, often sandy soil. She loves warmth. It grows in Central Europe in companies of the Sisymbrion Association.

The distribution of Stellaria pallida is still insufficiently known. Their occurrences range from the Mediterranean region to southern Sweden.

In Austria it is common in the Pannonian region , but rarely found beyond that. In Switzerland it is said to be generally scattered.

The pale chickweed occurs in the middle and north of Germany. Otherwise it is apparently very rare.

Systematics

The scientific name Stellaria apetala was first published in 1793 by the Sicilian Franciscan Bernardino da Ucria . For a long time, this name was assigned to plants without petals from Stellaria media , which was refuted by Hügin (2012). Hence, this name has priority over Stellaria pallida. The Basionym this synonym, Alsine pallida , was in 1827 by Barthélemy Charles Joseph Dumortier as first published . The combination as Stellaria pallida has long been attributed to Louis Alexandre Henri Joseph Piré (1863), but it has been found that it is invalid and was only validly published by François Crépin (1865). The pale chickweed was previously regarded as a subspecies of the closely related chickweed ( Stellaria media ) and was called Stellaria media subsp. pallida (Dumort.) Ash. & Graebn. designated.

literature

  • 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 .
  • Wolfgang Adler, Karl Oswald, Raimund Fischer: Excursion flora of Austria . Ed .: Manfred A. Fischer. Eugen Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6 .
  • 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 .
  • 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 .
  • 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 .

Individual evidence

  1. ^ A b T. G. Tutin, NA Burges, AO Chater, JR Edmondson, VH Heywood, DM Moore, DH Valentine, SM Walters, DA Webb (eds.): Flora Europaea . 2nd, revised edition. Volume 1: Psilotaceae to Platanaceae . Cambridge University Press, Cambridge / New York / Melbourne 1993, ISBN 0-521-41007-X , pp. 162 (English, limited preview in Google Book Search).
  2. ^ 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 , pp. 373 .
  3. ↑ Jaakko Jalas, Juha Suominen (ed.): Atlas Florae Europaeae. Distribution of Vascular Plants in Europe. 6. Caryophyllaceae (Alsinoideae and Paronychioideae). Akateeminen Kirjakauppa, The Committee for Mapping the Flora of Europe & Societas Biologica Fennica Vanamo, Helsinki 1983, ISBN 951-9108-05-X , p. 74.
  4. ^ Bernardino da Ucria: Plantae ad Linnaeanum opus addendae, et secundum Linnaei systema. In: Nuova raccolta di opuscoli di autori siciliani. Volume 6, Palermo 1793, pp. 245-256 (here: p. 253). Reprinted in: Archive for Botany (Leipzig). Volume 1, No. 1, pp. 67–70, limited preview in Google Book Search.
  5. ↑ a b Gerold Hügin: Stellaria pallida - still often misunderstood. In: Kochia. Volume 6, 2012, ISSN  1863-155X , pp. 91-117.
  6. ↑ DH Kent: The correct authority for lesser chickweed, Stellaria pallida (Caryophyllaceae). In: Watsonia. Volume 21, No. 4, 1997, p. 364, PDF file (11.83 MB).

Web links

Commons : Pale chickweed ( Stellaria pallida )  - album with pictures, videos and audio files