Sarmentypnum exannulatum

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Sarmentypnum exannulatum
Warnstorfia exannulata (b, 110113-465044) 4630.JPG

Sarmentypnum exannulatum

Systematics
Class : Bryopsida
Subclass : Bryidae
Order : Hypnales
Family : Calliergonaceae
Genre : Sarmentypnum
Type : Sarmentypnum exannulatum
Scientific name
Sarmentypnum exannulatum
( Schimp. ) Hedenäs

Sarmentypnum exannulatum (often called Warnstorfia exannulata referred (Schimper) Loeske; German Ring Loose peat moss Sickle ) is a moss - kind from the family Calliergonaceae .

features

Sarmentypnum exannulatum is very diverse. With its medium-sized plants, it forms loose and often extensive, yellowish, brown-green to reddish lawns. The up to 20 centimeters long, ascending stems are irregularly to loosely branched. The stem leaves are oval, lanceolate and gradually tapering to the long tip, often curved sickle to seldom straight, serrated at the edges. The strong rib extends to the upper third of the leaf length or to the tip of the leaf. The cells of the middle of the leaf are linear-rhombic and thick-walled, those of the leaf base are wider and shorter. The leaf wing cells are very clearly differentiated from the other cells, they are strongly inflated, elongated rectangular to rounded and form a broad triangular group that often extends to the leaf vein.

The moss is diocesan . Spore capsules are very rarely formed. The seta is up to 6 centimeters long and tortuous, the short, cylindrical capsule is inclined to horizontal and curved, the conical lid has a red wart. The finely papillary spores are 14-20 micrometers in size.

Location claims and distribution

Sarmentypnum exannulatum grows in wet to very wet, light to partially shaded, nutrient-poor, lime-poor, but often base-rich locations, especially in low and intermediate bogs, further on water banks and in spring bogs from the plains to the high mountain regions.

In Germany the species is moderately common, in the Central Alps it is very common in suitable locations.

Worldwide occurrences are given for Europe, Asia, North and Central Africa, North America, northwestern South America and the Falkland Islands as well as New Zealand.

Systematics

The species was in the past of the genus Drepanocladus as Drepanocladus exannulatus (Schimp.) Warnst. assigned. After a profound reorganization of the family circle around Drepanocladus , the species was / is placed in the genus Warnstorfia (as Warnstorfia exannulata ). Through a further separation from Warnstorfia , the species finally ends up in the genus Sarmentypnum . This last assignment as Sarmentypnum exannulatum is evidently only rarely carried out by various moss flora, so that the species is currently often referred to under the name Warnstorfia exannulata .

literature

  • Jan-Peter Frahm , Wolfgang Frey : Moosflora (= UTB . 1250). 4th, revised and expanded edition. Ulmer, Stuttgart 2004, ISBN 3-8252-1250-5 .
  • Wolfgang Frey, Michael Stech, Eberhard Fischer: Bryophytes and Seedless Vascular Plants (= Syllabus of Plant Families. 3). 13th edition. Borntraeger, Berlin et al. 2009, ISBN 978-3-443-01063-8 .
  • Martin Nebel, Georg Philippi (ed.): The mosses of Baden-Württemberg. Volume 2: Special part, (Bryophytina II, Schistostegales to Hypnobryales). Ulmer, Stuttgart 2001, ISBN 3-8001-3530-2 .

Individual evidence

  1. ↑ Martin Nebel, Georg Philippi (Ed.): Die Moose Baden-Württemberg. Volume 2. 2001, ISBN p. 328 f.
  2. ↑ Risto Tuomikoski, Timo Koponen: On the generic taxonomy of Calliergon and Drepanocladus (Musci, Amblystegiaceae). In: Annales Botanici Fennici. Vol. 16, No. 3, 1979, ISSN  0003-3847 , pp. 213-227, JSTOR 23725158 .
  3. ^ Jan-Peter Frahm, Wolfgang Frey: Moosflora. 4th, revised and expanded edition. 2004, p. 454.
  4. ^ Wolfgang Frey, Michael Stech, Eberhard Fischer: Bryophytes and Seedless Vascular Plants. 13th edition. 2009, p. 223.

Web links

Commons : Warnstorfia exannulata  - album with pictures, videos and audio files