Dull bud moss

Dull bud moss
	Blunt bud moss ( Acaulon muticum )
Systematics
Class :	Bryopsida
Subclass :	Dicranidae
Order :	Pottiales
Family :	Pottiaceae
Genre :	Acaulon
Type :	Dull bud moss
Scientific name
	Acaulon muticum
	( Hedw. ) C. Garbage.

The blunt bud moss ( Acaulon muticum ) is a species from the Pottiaceae family and, like most of them, a moss that lives on the ground. Typical is the bud-shaped growth with a spore capsule sunk into the leaves. Because of its small size, the species is often easily overlooked.

description

The blunt bud moss is a short-lived moss that grows in small herds. The species is autocratic or dioecious. The female plants are about 2 to 2.5 millimeters high and have bud-shaped foliage. The olive-green to red-brown colored leaves are ovoid and hollow and have a rib that ends at the tip or protrudes briefly. The upper part of the perichaetial leaves are irregularly serrated and enclose the seated, cleistocarpic spore capsule. The red-brown colored, spherical capsule with a very small, blunt tip sits on the very short, straight seta. You sit on a small, cap-shaped kalyptra. The fine black spores are brownish with a diameter of 25 to 50 μm. Sporophytes are regularly and abundantly developed. The spore ripening takes place in late autumn to spring. The plant then dies.

Distribution and ecology

The less competitive species prefers light-rich, open-ground locations with clayey to loamy, lime-poor, but base-rich soils. It occurs predominantly on stubble and fallow fields as a typical field moss species, but also occurs in other open locations, such as on slopes and in gappy meadows. Their ecological behavior can be characterized using the pointer values according to Ellenberg as follows: L 9 , T 5 , K 5 , F 7 and R 5 .

The blunt bud moss occurs in Europe from southern Finland and southern Norway to the Mediterranean region.

According to the life strategy model of During, this species is an annual commuter plant. This type of strategy is characterized by a very short lifespan, during which few large spores (with a size> 20 μm) are produced. Species of this type occur mainly in habitats that offer short-term suitable living conditions.

Socialization

In terms of plant sociology, the stumpy bud moss is a characteristic species of the Phascion cuspidati Waldh association. ex v. Krus. 1945. It occurs predominantly along with the Sharpened gloss moss ( Phascum cuspidatum ), which is the eponymous type for the association, the Reddish Birnmoos ( Bryum rubens ), the truncated Pott moss ( Pottia truncata ), the blue-green star liverwort ( riccia glauca ), the Staubfrüchtigen Star liver moss ( Riccia sorocarpa ), the veiled day moss ( Ephemerum minutissimum ) and the field small-forked moss ( Dicranella staphylina ) in the association of the Pottietum truncatae v. Krus. 1945 on.

Hazard and protection

The species is classified as moderately common in Germany. Due to the sharp decline in suitable habitats, especially of stubble fields in agriculture, Acaulon muticum is classified as endangered (Category 3) in the Red List of Germany's Plants.

Sources and further information

Individual evidence

↑ Heinjo J. During: Life Strategies of bryophytes: a preliminary review. In: Lindbergia. Vol. 5, No. 1, 1979, ISSN 0105-0761 , pp. 2-18, JSTOR 20149317 .
^ Rolf Marstaller: Syntaxonomic Conspect of the moss societies of Europe and neighboring areas. (= Haussknechtia. Supplement. 13, ISSN 0863-6451 ). Thuringian Botanical Society, Jena 2006.
↑ Ludwig opinion, Wiebke Schröder: Distribution atlas of the mosses of Germany. Volume 2: Akrokarpe Mosses: Andreaeaceae to Splachnaceae, volume register. Self-published by the Regensburg Botanical Society, Regensburg, 2007.
↑ Gerhard Ludwig, M. Schnittler (Red.): Red List of Endangered Plants in Germany (= series for vegetation studies. 28). Landwirtschaftsverlag, Münster 1996, ISBN 3-89624-001-3 .

literature

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 .
Jan-Peter Frahm , Wolfgang Frey : Moosflora (= UTB . 1250). 4th, revised and expanded edition. Ulmer, Stuttgart 2004, ISBN 3-8252-1250-5 .

Web links

Commons : Blunt Bud Moss ( Acaulon muticum ) - Collection of images, videos and audio files

[During-1] Heinjo J. During: Life Strategies of bryophytes: a preliminary review. In: Lindbergia. Vol. 5, No. 1, 1979, ISSN 0105-0761 , pp. 2-18, JSTOR 20149317 .

[Marstaller-2] Rolf Marstaller: Syntaxonomic Conspect of the moss societies of Europe and neighboring areas. (= Haussknechtia. Supplement. 13, ISSN 0863-6451 ). Thuringian Botanical Society, Jena 2006.

[Meinunger-3] Ludwig opinion, Wiebke Schröder: Distribution atlas of the mosses of Germany. Volume 2: Akrokarpe Mosses: Andreaeaceae to Splachnaceae, volume register. Self-published by the Regensburg Botanical Society, Regensburg, 2007.

[4] Gerhard Ludwig, M. Schnittler (Red.): Red List of Endangered Plants in Germany (= series for vegetation studies. 28). Landwirtschaftsverlag, Münster 1996, ISBN 3-89624-001-3 .