Billot's striped fern

from Wikipedia, the free encyclopedia
Billot's striped fern
Asplenium billotii 002.jpg

Billot's striped fern ( Asplenium obovatum subsp billotii )

Systematics
Class : True ferns (Polypodiopsida)
Order : Spotted ferns (Polypodiales)
Family : Striped fern family (Aspleniaceae)
Genre : Striped Ferns ( Asplenium )
Type : Asplenium obovatum
Subspecies : Billot's striped fern
Scientific name
Asplenium obovatum subsp billotii
( FWSchultz ) O.Bolòs & al.

Billot's striped fern ( Asplenium obovatum subsp. Billotii (FWSchultz) O.Bolòs & al. ) Is a subspecies of the plant species Asplenium obovatum Viv. from the genus of the striped ferns ( Asplenium ).

description

Habitus
Herbarium evidence

Billot's striped fern reaches heights of 15 to 30 centimeters. The fronds are double to triple pinnate. The frond outline is linear-lanceolate. At the bottom it is hardly or not at all narrowed. The petiole is shorter than the blade. The stalk and part of the underside of the rachis is brown. The lower pair of plumage protrudes at a right angle and is often shorter than the next one. The leaf leaflets are serrate.

The sori stand near the edge of the leaf. The spores ripen in July to September.

The number of chromosomes is 2n = 144.

Occurrence

Billot's striped fern is common in Europe, North Africa and the Canary Islands . It has the eastern border of its distribution area in Central Europe and is very rare in Central Europe. It occurs here in Baden-Württemberg , Rhineland-Palatinate , Switzerland , Belgium , Alsace and Luxembourg . In Germany it is classified as extremely rare and particularly protected.

It grows on moist, shaded sandstone rocks of the montane altitude range . It is an association character type of the Crocynio-Asplenietum billotii and the Asplenietum septentrionali-adianti-nigri.

Taxonomy

The first description under the name ( Basionym ) Asplenium billotii F.W.Schultz was made in 1845 by Friedrich Wilhelm Schultz in the journal Flora (Regensburg) , volume 28, page 738. Oriol de Bolòs i Capdevila et al. established the clan as a subspecies to Asplenium obovatum Viv in 1990 . in Flora Manual dels Països Catalans , page 1213. The name billotii honors the Alsatian botanist Paul Constant Billot , a pedagogue in Haguenau . Other synonyms for Asplenium obovatum subsp. billotii (FWSchultz) O.Bolòs & al. are: Asplenium obovatum subsp. lanceolatum (Fiori) P. Silva , Asplenium lanceolatum Huds. non Forssk. 1775.

literature

  • Siegmund Seybold (Ed.): Schmeil-Fitschen interactive (CD-Rom), Quelle & Meyer, Wiebelsheim 2001/2002, ISBN 3-494-01327-6 .
  • Oskar Sebald, Siegmund Seybold, Georg Philippi (Hrsg.): The fern and flowering plants of Baden-Württemberg. Volume 1: General Part, Special Part (Pteridophyta, Spermatophyta): Lycopodiaceae to Plumbaginaceae. 2nd, supplemented edition. Eugen Ulmer, Stuttgart 1993, ISBN 3-8001-3322-9 .

Individual evidence

  1. ^ 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.  77 .
  2. ^ Asplenium billotii at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed on August 20, 2016. [1]  ( Page no longer available , search in web archives )  Info: The link was automatically marked as broken. Please check the link according to the instructions and then remove this notice. @1@ 2Template: Dead Link / www.tropicos.org  
  3. ↑ M. Christenhusz, E. von Raab-Straube (2013): Lycopodiophytina. : Asplenium obovatum data sheet In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
  4. ↑ Walter Erhardt , Erich Götz, Nils Bödeker, Siegmund Seybold: The great zander. Encyclopedia of Plant Names. Volume 2. Types and varieties. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5406-7 .

Web links

Commons : Billot's striped fern ( Asplenium obovatum subsp. Billotii )  - album with pictures, videos and audio files