Cystopteris alpina

Alpine Blasenfarn ( Cystopteris alpina)

The Alpine - Blasenfarn ( Cystopteris alpina ) is a Central European scattered in the Alps occurring representatives of Wimperfarngewächse ( Woodsiaceae ).

Features

The Alpine - Blasenfarn reaches stature heights of 5 to 20, rarely 40 cm. He has a short rhizome. Therefore, the fronds are arranged in rosettes. They are 10 to 40 cm long, delicate, translucent and mostly pinnately twice. The leaf blade has an elongated lanceolate outline and is usually longer than the petiole. The lowermost Fiederpaar is shorter than the following. The pinnules have a wedge -shaped base and are narrow - oblong. The tip is to cut emarginate. The last vein branches run into the Fiederbuchten. The spores mature in July and August and are regularly prickly.

In habit the species resembles the slashed Spleenwort ( Asplenium fissum ).

The chromosome number is 6n = 252, the type is so hexaploid.

Dissemination

The Alpine - Blasenfarn has its main distribution in the Alps, but occurs approximately in the Bavarian Forest. In Austria it is absent only in Vienna and the Burgenland. In Germany, it occurs only in Bavaria. It grows in damp crevices and scree. He is kalkliebend and comes in the subalpine to alpine altitude level before and rises to 2400 m.

He is a Assoziationscharakterart of Heliospermo - Cystopteridetum alpinae ( Cystopteridion fragilis ) and also occurs in Thlaspion rotundifolii.

Documents

• Siegmund Seybold (ed.): Schmeil Fitschen - interactive ( CD -Rom ), Quelle & Meyer, Wiebelsheim 2001/2002, ISBN 3-494-01327-6
• M. A. Fischer, K. Oswald, W. Adler: Exkursionsflora for Austria, Liechtenstein and South Tyrol. Third Edition, Upper Austria, Biology Centre of the Upper Austrian Provincial Museum, Linz 2008, ISBN 978-3-85474-187-9