Berg-Leinblatt

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Berg-Leinblatt
Thesium bavarum PID1060-2.jpg

Berg-Leinblatt ( Thesium bavarum )

Systematics
Order : Sandalwoods (Santalales)
Family : Sandalwood family (Santalaceae)
Tribe : Thesieae
Sub tribus : Thesiinae
Genre : Flax leaf ( thesium )
Type : Berg-Leinblatt
Scientific name
Thesium bavarum
closet

The mountain-thesium ( Thesium bavarum ) also Bavarian Vermeinkraut or Bavarian thesium is a plant from the genus Leinblätter ( Thesium ).

description

The mountain flax leaf is a perennial herbaceous plant that reaches heights of between 30 and 80 centimeters. The angular stem is upright. It is branched and often richly leafed. The species does not form stolons , but has root shoots. The leaves are blue-green in color and lanceolate. They are three to five nerved and between 2 and 4 cm long and 3 to 7 mm wide. They are completely bare.

From late June to July, the plants form umbels from which to terminal panicle combine. Under the individual flowers are a larger and two smaller bracts . The flowers are inconspicuous and white inside with five notched petals. (Only four petals are seldom formed, but never on all flowers of an inflorescence . If the four-lobed flowers predominate on a plant, it is not a mountain flax leaf.) If they are recumbent , the bud seems to be shifted onto the leaf surface or the petiole to be. After flowering, fruits around 4 mm long ripen . These are spherical to ovoid and stalked. At the time of fruiting, the five-column flower envelope is rolled up by the deeply split tips and is significantly shorter than the fruit.

The number of chromosomes is 2n = 24.

Berg-Leinblatt ( Thesium bavarum )

distribution

The mountain flax leaf is at home in the Alps , in Central and Southeastern Europe and in Italy. Outside of Europe, it occurs only in two places in Asia Minor . The species prefers a dry and calcareous, loose loam or loess soil . It prefers to grow in areas with a warm climate and lots of sun. It often occurs on dry bushes, in sparse dry forests or on the edge of it. In the warm Alps, the species rises at altitudes of up to 1800 m. Berg-Leinblatt usually occurs in the Geranion sanguinei association , often in company with deer root hairline ( Peucedanum cervaria ) and blood-red cranesbill ( Geranium sanguineum ) in Geranio-Peucedanetum or in Bupleuro-Laserpitietum. The species also occurs in societies of the Erico-Pinion or Berberidion associations or in those of the order Quercetalia pubescentis.

Systematics

For some authors, the mountain flax leaf is only a subspecies of the middle flax leaf ( Thesium linophyllon L. ) and then bears the name: Thesium linophyllon subsp. montanum (Schrad.) Čelak.

ecology

The mountain flax leaf is a semi-parasite that removes water and nutrients from its host plants. However, there does not seem to be any particular host specificity. The top flowers in the inflorescence are often noticeably small. They remain closed and fertilize themselves via celistogamy . The remaining flowers are pollinated by bees . The closely related low linseed leaf ( Thesium dollineri ) reveals the same behavior . The ecological indicator values ​​according to Ellenberg are:

L7 - T6 - K4 - F3 - R8 - N2 - S0 - Ghp

The number of chromosomes is 2n = 12.

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.  323 .
  2. ↑ P. Uotila, 2011: Santalaceae . Datasheet Thesium In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
  3. ↑ http://www.planto.de/gefaessdaten.php?nr=10882&Sn=b8da00c120ba305461f33d5c9ef88e5a
  4. ↑ http://cgi.uni-muenster.de/exec/Biologie.Botanik/karyodat-pflanzdaten.php?chromos_id=1367  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Toter Link / cgi.uni-muenster.de  

literature

  • Oskar Sebald, Siegmund Seybold, Georg Philippi (Hrsg.): The fern and flowering plants of Baden-Württemberg . tape 4 : Special part (Spermatophyta, subclass Rosidae): Haloragaceae to Apiaceae . Eugen Ulmer, Stuttgart (Hohenheim) 1992, ISBN 3-8001-3315-6 , pp. 72 .
  • Dietmar Aichele, Heinz-Werner Schwegler: The flowering plants of Central Europe. Volume 3: Evening primrose plants to reddish plants. Franckh-Kosmos, Stuttgart 1995, ISBN 3-440-06193-0 , p. 142.

Web links