Butterbur-summer root

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Butterbur-summer root
Butterbur summer root (Orobanche flava) on Lake Traunsee

Butterbur summer root ( Orobanche flava ) on Lake Traunsee

Systematics
Asterids
Euasterids I
Order : Mint family (Lamiales)
Family : Summer root family (Orobanchaceae)
Genre : Sommerwurzen ( Orobanche )
Type : Butterbur-summer root
Scientific name
Orobanche flava
Mart. ex FWSchultz

The butterbur broomrape ( Orobanche flava ) is a plant from the genus of orobanche ( Orobanche ) and belongs to the family of Broomrape family (Orobanchaceae). It is also known as the light yellow summer root .

description

The biennial holoparasite reaches heights of 15 to 40 centimeters.

The simple stem is wax yellow. The pale to light yellow, less often ocher yellow crown is reddish on the upper lip and turns brown as it dries up. The back of the crown and the upper lip of the crown do not have a comb-shaped elevation. The upper lip of the crown is deeply bilobed, the tip is first extended and finally turned back. The middle lobe of the lower lip of the crown is helmet-shaped (convex). The stamens are inserted four to six millimeters above the base of the corolla tube; the stylus is bare to sparse glands hairy.

Flowering time is from June to August.

The number of chromosomes is 2n = 38.

Occurrence

Butterbur-summer root occurs in France, Italy, Croatia, Slovenia, Serbia, Romania, Ukraine, Austria, Germany, Switzerland, Czech Republic, Hungary, Poland, Slovakia, in the Caucasus and in Morocco. Lime-rich rock rubble corridors are preferred as a location, as this species parasitizes on plants of the genus butterbur ( Petasites ) - especially on Petasites paradoxus . Also on representatives of the genera Alpendost ( Adenostyles ), Coltsfoot ( Tussilago ) and Monkshood ( Aconitum ). The butterbur summer root is a character species of the class of rock rubble and rubble societies (Thlaspietea rotundifolii) in Central Europe, but it also occurs in societies of the Mesobromion.

In Austria it is widespread from montane to subalpine. It occurs frequently in the Northern Limestone Alps , but is otherwise scattered. It is missing in Burgenland and Vienna. In Germany it is only common in the south (Alps). In the Allgäu Alps in Bavaria, it rises between Dietersbachalpe and Älpele up to an altitude of 1650 meters.

literature

  • Manfred A. Fischer , Wolfgang Adler, Karl Oswald: Excursion flora for Austria, Liechtenstein and South Tyrol. 2nd, improved and enlarged edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2005, ISBN 3-85474-140-5 .
  • Konrad Lauber & Gerhart Wagner: Flora Helvetica. 4th edition. Haupt-Verlag, Bern 2007, ISBN 978-3-258-07205-0 .

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 , pp.  866 .
  2. ^ Orobanche in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved January 27, 2018.
  3. ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 2, IHW, Eching 2004, ISBN 3-930167-61-1 , p. 488.

Web links

Commons : Butterbur-Sommerwurz ( Orobanche flava )  - Album with pictures, videos and audio files