Alpine bubble fern
| Alpine bubble fern | ||||||||||||
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Alpine bubble fern |
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| Cystopteris alpina | ||||||||||||
| ( Lam. ) Desv. |
The Alpine bladder fern ( Cystopteris alpina ) is a representative of the eyelash fern family (Woodsiaceae) that occurs in Central Europe in the Alps . According to Euro + Med it is classified as a subspecies Cystopteris fragilis subsp. alpina (Lam.) Hartm. of Cystopteris fragilis .
features
The alpine bladder fern reaches heights of 5 to 20, rarely 40 cm. It has a short rhizome . The fronds are therefore rosettes. They are 10 to 40 cm long, delicate, translucent and mostly double-pinnate. The leaf blade has an elongated-lanceolate shape and is usually longer than the petiole . The lowest pair of plumage is shorter than the following. The leaflets have a wedge-shaped base and are narrow-elongated. The tip is edged to cut. The last veins run into the pinnate bays. The spores ripen in July and August and are regularly prickly.
In habit, the species is similar to the slashed striped fern ( Asplenium fissum ).
The number of chromosomes is 6n = 252, so the species is hexaploid .
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distribution
The Alpine bladder fern has its main distribution area in the Alps, but is also found in the Bavarian Forest . In Austria it is only missing in Vienna and Burgenland. In Germany it occurs only in Bavaria. It grows in damp rock crevices and on scree. It loves chalk and occurs in the subalpine to alpine altitude range and rises up to 2400 m. In the Allgäu Alps, it rises from 1,300 meters at the Point-Alpe in Bärgündele in Bavaria to 2,400 meters above sea level on the Widderstein in Vorarlberg.
It is an association character species of the Heliospermo-Cystopteridetum alpinae from the association Cystopteridion fragilis and also occurs in societies of the association Thlaspeion rotundifolii.
supporting documents
- 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
- ↑ Christenhusz, M. & Raab-Straube, E. von (2013): Lycopodiophytina. - In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Datasheet Cystopteris In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
- ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching 2001, ISBN 3-930167-50-6 , p. 80.
- ^ 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. 80 .
Web links
- Alpine bubble fern. In: FloraWeb.de.
- Alpine bubble fern . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
- Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
- Distribution in Switzerland [1]
- Thomas Meyer: Bubble fern data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )