Serpentine striped fern

Serpentine striped fern
	Serpentine striped fern ( Asplenium cuneifolium )
Systematics
	Ferns
Class :	True ferns (Polypodiopsida)
Order :	Spotted ferns (Polypodiales)
Family :	Striped fern family (Aspleniaceae)
Genre :	Striped Ferns ( Asplenium )
Type :	Serpentine striped fern
Scientific name
	Asplenium cuneifolium
	Viv.

The serpentine striped fern ( Asplenium cuneifolium ), also called wedge-leaved striped fern, is a species of the genus of the striped fern ( Asplenium ) within the family of the striped fern family (Aspleniaceae). It only thrives on serpentine rock in Europe . According to Euro + Med it is classified as a subspecies Asplenium adiantum-nigrum subsp. serpentini (exchange) hayl. to Asplenium adiantum-nigrum .

description

Fern fronds

The serpentine striped fern grows as a perennial herbaceous plant and reaches heights of 10 to 45 centimeters; it is only half the size of Asplenium adiantum-nigrum . The fern fronds are dull, but otherwise they are similar to those of Asplenium adiantum-nigrum . The fronds are three to four times pinnate. The stem of the frond is the same length as or longer than the blade, brown in color and around 2 millimeters thick. It is soft, light green and does not overwinter. The leaf blade is long pointed. The feathers are usually straight and not bent upwards. The first-order pinnate sections are hardly pointed. The leaflets (= sections of the last order) are broadly oval, fine and roughly blunt-toothed. The last plumage section is rhombic to fan-wedge-shaped with a truncated upper end, but not prickly and straight; its edge is serrated pointed or blunt.

The spores ripen in July and August. The spores are usually 30 to 34 (27 to 36) µm long.

The number of chromosomes is 2n = 72.

distribution

The serpentine striped fern is widespread in Central, Eastern and Southern Europe as well as Anatolia . In Central Europe it comes in Germany , Austria , Switzerland , the Czech Republic and in what is now Silesia . The serpentine striped fern occurs in Germany in Bavaria , Saxony , Thuringia (extinct here): e.g. Fichtelgebirge, in the Franconian Forest, Vogtland and Ore Mountains. In Austria it occurs in Lower Austria , Salzburg , Styria and Burgenland . In Switzerland it occurs in the cantons of Ticino , Valais and Graubünden . In Germany, the serpentine striped fern is classified as a national type of responsibility within the national strategy for biological diversity of the federal government.

It only thrives on serpentine rock . It grows on rocks, scree, on stony slopes of the colline to subalpine altitude . It is an association character type of the Asplenietum serpentini (Asplenion serpentini).

supporting documents

Siegmund Seybold (Ed.): Schmeil-Fitschen interactive. CD-ROM, Version 1.1, Quelle & Meyer, Wiebelsheim 2002, ISBN 3-494-01327-6 .

Individual evidence

↑ Christenhusz, M. & Raab-Straube, E. von (2013): Lycopodiophytina. - In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Datasheet Asplenium In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
↑ ^a ^b ^c ^d ^e ^f data sheet at InfoFlora, the national data and information center for Swiss flora .
↑ ^a ^b ^c Asplenium cuneifolium Viv., Serpentine striped fern. In: FloraWeb.de.
↑ Species in particular responsibility of Germany on the homepage of the Federal Agency for Nature Conservation, accessed on June 3, 2016

Web links

Commons : Serpentine Striped Fern ( Asplenium cuneifolium ) - Album with pictures, videos and audio files