Senecio inaequidens

Narrow-leaved (Senecio inaequidens )

The Narrow-leaved ragwort ( Senecio inaequidens ) is a plant of the genus Greis herbs ( Senecio ) in the sunflower family ( Asteraceae). His original home is located in South Africa. In many parts of the world, it is an invasive plant. In Central Europe it is now one of the most common ragwort species.

Features

The narrow-leaved herb grows as short-lived, perennial herbaceous plant. Overall, the plants reach heights of growth of 30 to 60 cm.

The most characteristic feature is, like the German common name suggests, the shape of the leaves: they are linear to narrowly lanceolate, 1 to 5 mm wide and about 6 inches long. From the bottom of them are finely serrated and sharp, although the blade edge can be rolled over something sometimes, so that the leaves look ganzrandig at first glance. At the base of the leaves cover the stems with a small semi- ears.

The flowering season begins in early summer (around June) and ends with the onset of winter ( around the end of November). The total inflorescence is rather loose and heavily branched. The flower heads have a diameter of 2 to 2.5 cm. An outer shell, i.e. a second series of husks of the flower head is present. In each basket usually sit ten to twelve yellow ray florets.

Occurrence

The original homeland of the narrow- old man weed is in South Africa.

It was introduced in the last century as Wolladventivpflanze. For a long time it was adventitious, often with only a few copies in the places of its introduction ( most ports ) spread and inconstant. Since the 1970s, however, she conquered from the northwest in a short time much of central Europe. Often the neophyte forms particularly along highways (motorways ) and railway lines showy, yellow flowering ground stocks. Furthermore, it grows on dry waste places, such as on construction sites, at (freight ) train stations, along roadsides, in industrial areas, etc. The short-lived perennial herbaceous plant thrives primarily sociological in annuals ( annuals ) ruderal or Raukenfluren ( Sisymbrietalia ), in biennen ( two-year ) Ruderalfluren ( Onopordetalia ), in ruderal couch grass ( Agropyretea intermedii - repentis ) and in sandy dry grasslands (Sedo - Scleranthetea ).

Swell

Henning Haeupler, Thomas Muer: Image Atlas of ferns and flowering plants in Germany. Eugen Ulmer, Stuttgart 2000, ISBN 3-8001-3364-4.
Wolfgang Adler, Karl Oswald, Raymond Fischer, Manfred A. Fischer (ed.): Excursion Flora of Austria. Eugen Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6.
Erich Oberdorfer: Phytosociological Exkursionsflora. Assisted by Theo Müller. 6th revised and enlarged edition. Eugen Ulmer, Stuttgart ( Hohenheim), 1990, ISBN 3-8001-3454-3.
Template: Internet resource / maintenance / access date is not in the ISO FormatUwe Starfinger, Ingo Kowarik, Maike Isermann: Senecio inaequidens DC. ( Asteraceae), Narrow-leaved herb. In: NeoFlora. Invasive alien plants in Germany. Federal Agency for Nature Conservation, accessed on February 3, 2011.

Senecio inaequidens

Features

Occurrence

Swell

Further Reading