Stiff rocket

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Stiff rocket
Sisymbrium strictissimum 1.jpg

Stiff rocket ( Sisymbrium strictissimum )

Systematics
Rosids
Eurosiden II
Order : Cruciferous (Brassicales)
Family : Cruciferous vegetables (Brassicaceae)
Genre : Rocket ( sisymbrium )
Type : Stiff rocket
Scientific name
Sisymbrium strictissimum
L.

The stiff rocket ( Sisymbrium strictissimum ) is a species of the cruciferous family (Brassicaceae). It is the only Central European representative of the rocket with undivided leaves.

features

The stiff rocket is a 80 to 170 (rarely up to 200) cm high hemicryptophyte . The stem has short hairs on top. Their leaves are undivided. The bottom leaves are rarely pinnate at the base. The leaves are ovate to broadly lanceolate and 2 to 3 cm wide. At least the underside is densely hairy. The leaves are roughly toothed or almost entire.

The flower cluster is leafless. The crown is yellow. The sepals are 5 to 6 mm long, the two outer horns. Flowering time is June and July. The seeds stand in a row and are 2 to 3 mm long.

The species has chromosome number 2n = 28.

Stiff rocket ( Sisymbrium strictissimum )

Distribution and locations

The stiff rocket is native to Eurasia and occurs here in the submeridional-south-temperate Florence zone , where the degree of continentality is c3 to c5 (from 10). It grows in Central Europe on fresh, nutrient-rich, mostly calcareous, sandy or pure, more or less deep loam or clay soils. It likes to thrive together with the gold calf's goiter ( Chaerophyllum aureum ) or the bulbous calf's goiter ( Chaerophyllum bulbosum ) in societies of the order Glechometalia, but also occurs in those of the Convolvulion association.

In Germany it occurs scattered in central and northern Bavaria and Baden-Württemberg, rarely in southern Hesse, central and northern Thuringia, in Saxony on the Elbe to Meißen, in Saxony-Anhalt and south-east Lower Saxony. As a neophyte , it is rarely found in northern Saxony near Leipzig and Schwepnitz.

In Austria, the stiff rocket occurs in all federal states. It grows in nutritious bushes and riparian forests. It can often be found near castles and castle ruins. It occurs scattered in the colline and submontane altitudes . It is missing in Liechtenstein.

supporting documents

  1. ↑ a b c d e f g h Werner Rothmaler: Excursion flora from Germany. Volume 4. Vascular Plants: Critical Volume . 10th edition, Elsevier, Munich 2005, ISBN 3-8274-1496-2
  2. ^ A b c 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 .
  3. ↑ a b c Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Stuttgart, Verlag Eugen Ulmer, 2001, pages 474-475. ISBN 3-8001-3131-5

Web links

Commons : Stiff Rauke ( Sisymbrium strictissimum )  - Album with pictures, videos and audio files