New Belgian aster

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New Belgian aster
New Belgian aster (Symphyotrichum novi-belgii)

New Belgian aster ( Symphyotrichum novi-belgii )

Systematics
Order : Astern-like (Asterales)
Family : Daisy family (Asteraceae)
Subfamily : Asteroideae
Tribe : Astereae
Genre : Herbstastern ( Symphyotrichum )
Type : New Belgian aster
Scientific name
Symphyotrichum novi-belgii
( L. ) GLNesom

The New Belgian aster , New Belgium autumn aster or smooth-leaf aster ( Symphyotrichum novi-belgii , syn .: Aster novi-belgii ).

features

The New Belgian Aster is a perennial herbaceous plant up to 1.6 (rarely up to 2) meters high . The upright stem is glabrous or in the upper part as well as the side branches usually two- to four-row fluffy hairy . The stem leaves are lanceolate to broadly lanceolate . On the branches, the leaves gradually get smaller towards the top and are usually not very numerous. The relatively large flower heads reach 2.5 to 3 cm in diameter. The ray florets are usually purple, but can occasionally be white, purple or purple. The outer bracts of the flower heads are almost as long as the inner ones , rarely at least half as long as these. They are herbaceous, about 1 mm wide, widest in or above the middle, and usually stand out clearly or are only weakly adjacent to the inner ones. The flowering period of Symphyotrichum novi-belgii extends from September to October.

The number of chromosomes is 2n = 48 or 54.

ecology

The smooth-leaf aster is a pioneer in root creeping. That pollination is done by insects, particularly through flies and bees. The achenes are spread by the wind .

Smooth-leaf aster ( Symphyotrichum novi-belgii ), flower head

Occurrence

The smooth-leaf aster comes from North America and was introduced to Germany as a garden plant in the 18th century. It grows wild as a neophyte in herbaceous corridors on river banks or in ruderal corridors on fresh to moist, nutrient-rich soil. It occurs in Central Europe in societies of the order Convolvuletalia. It is originally found in eastern Canada and the eastern United States. It is a neophyte in Europe, Cuba, Hispaniola, Mexico, Australia and New Zealand.

Individual evidence

  1. ↑ a b c Eckehart J. Jäger (Ed.): Rothmaler, Exkursionsflora von Deutschland, Vascular Plants: Basic Volume . 20th edition - Spectrum, Heidelberg, 2011, ISBN 978-3-8274-1606-3 , p. 848
  2. ↑ New Belgian aster. In: FloraWeb.de.
  3. ↑ a b c 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.  912 .
  4. ^ A b Symphyotrichum in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved February 24, 2018.

Web links

Commons : New Belgian Aster ( Symphyotrichum novi-belgii )  - album with pictures, videos and audio files