Sauter's rock flowers

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Sauter's rock flowers
Draba sauteri.jpg

Sauter's rock flowers ( Draba sauteri )

Systematics
Eurosiden II
Order : Cruciferous (Brassicales)
Family : Cruciferous vegetables (Brassicaceae)
Tribe : Arabideae
Genre : Rock flowers ( Draba )
Type : Sauter's rock flowers
Scientific name
Draba sauteri
Hoppe

Sauter's rock flower ( Draba sauteri ) is a species of rock flower ( Draba ) in the cruciferous family (Brassicaceae). It only thrives in the Northern Limestone Alps . The specific epithet sauteri honors the Austrian botanist Anton Eleutherius Sauter (1800–1881).

description

Illustration from The alpine plants painted from nature , p. 83

Vegetative characteristics

Sauter Felsenblümchen is a perennial , herbaceous plant and plant height reached 5 to 15 centimeters. Loose lawns form.

The leaves are in dense, spherical rosettes. The leaves are lanceolate-spatulate and keeled.

Generative characteristics

The flowering period extends from June to July. The inflorescence stems have no leaves. Up to five flowers stand together in racemose inflorescences . The flower stalks are 2 to 5 millimeters long.

The hermaphrodite flowers are fourfold. The four petals are bright yellow and 4 to 6 millimeters long. The stamens are significantly shorter than the petals.

The pod fruit is 4 to 5 millimeters long and stalked. The pen is intended for fruit time 0.5 to 1 millimeter long.

There is tetraploidy and the number of chromosomes is 2n = 32.

ecology

Sauter's rock flowers are herbaceous Chamaephytes . The pollination is effected by insects or by means of self-pollination .

Occurrence

Sauters Felsenblümchen is endemic to the northeast Limestone Alps and the Lungau . It occurs only in Upper Austria , Styria , Salzburg and the Berchtesgaden Alps .

It grows on level to slightly sloping limestone cliffs, not in crevices, as well as in rock rubble corridors in exposed peaks. It occurs in the alpine to nival altitudes and is considered rare to very rare. In the Alps it develops its optimum in the plant communities of the Potentillenion caulescentis.

literature

  • Siegmund Seybold (Ed.): Schmeil-Fitschen interactive. (CD-ROM). Quelle & Meyer, Wiebelsheim 2001/2002, ISBN 3-494-01327-6 .
  • Manfred A. Fischer , Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol. 3rd, improved edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 .

Individual evidence

  1. ↑ a b Draba sauteri Hoppe, Sauter rock flowers. In: FloraWeb.de.
  2. ^ Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas. 8th edition. Stuttgart, Verlag Eugen Ulmer, 2001. ISBN 3-8001-3131-5 . Page 457.
  3. ↑ Sauter's rock flowers . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
  4. ↑ David Aeschimann et al .: Flora Alpina. Volume 1 and 2. Bern, Stuttgart, Vienna Haupt-Verlag, 2004, ISBN 3-258-06600-0 .

Web links

Commons : Sauter's rock flowers ( Draba sauteri )  - Collection of images, videos and audio files