Dusty star liver moss
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Dusty star liver moss ( Riccia sorocarpa ) |
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| Bish. |
The dust-fruited star liver moss ( Riccia sorocarpa ) is a species within the genus of the star liver moss . It is a characteristic pioneer moss on open, moist locations.
description
The dust-fruity star liver moss is an annual , thaleless liver moss that grows in mostly complete rosettes with a diameter of 0.5 to 2 centimeters. The thalli are blue-green to green. The thallus lobes are branched 2 to 3 times dichotomously and 2 to 3 times as wide as they are high in cross section. A characteristic feature is the deep, clearly cut V-shaped furrow on the top. The epidermis consists of two rows of cells, the upper one consisting of hyaline, balloon-shaped cells. The lower row has clearly thickened cell walls, which makes it easy to distinguish the species from other Riccia species.
The species is monoic . Numerous capsules are formed, sunk into the thallus, which shine through dark on the upper side. The spores are only released when the surrounding tissue breaks down. They are dark brown with a diameter of 75 to 100 μm. On the outside there are 7 to 10 fields along the diameter. These are each 8 to 12 μm in size and have hook-shaped papillae on the corners. There are irregular strips on the inside. The species is fruitful all year round, but mainly from autumn to early summer.
Distribution and ecology
The dust-fruity star liver moss is widespread worldwide. It is common everywhere in Germany, but is absent in pure limestone areas and in higher mountain regions.
The species is a light plant and therefore only tolerates shade to a limited extent. It is a pioneer species on open, moist to longer dry soils. It is particularly common in fields and fallow fields. In addition, it occurs on roadsides, ruderal spots, and in places also in gaps in dry grass. Furthermore, their focus is on submontane temperate locations with subatlantic to subcontinental climates. Their ecological behavior can be classified as follows using the pointer values according to Ellenberg :
L 9, T x, K 5, F 6, R 5 .
According to the life strategy model of During, this species is an annual commuter plant. This type is characterized by a short lifespan, during which large spores (diameter> 20 μm) are produced, which are stored in the diaspore bank of the soil to survive unfavorable periods. Species belonging to this strategy type mainly occur in habitats that only offer suitable living conditions for a short time.
Socialization
The species is Kennart a separate company, the Association Riccio sorocarpae-Funarietum fascicularis Lec. 1978, in which she appears together with the tufted back tooth moss ( Enthostodon fascicularis ). In addition, it is often associated with species of the Phascion cuspidati Waldh association. ex v. Krus. 1945 socialized, among others with the trimmed sperm moss ( Pottia truncata ), the field small-forked moss ( Dicranella staphylina ), the sharpened gloss moss ( Phascum cuspidatum ) and other species of star liver moss .
Sources and further information
literature
- Martin Nebel & Georg Philippi : The Mosses of Baden-Württemberg. Volume 3, Ulmer Verlag, Stuttgart 2005, 487 pages, ISBN 3-8001-3278-8
- Jan-Peter Frahm & Wolfgang Frey : Moss flora . 4th edition, UTB Verlag, Stuttgart 2004, 538 pages, ISBN 3-8252-1250-5
Individual evidence
- ↑ RM Schuster: The Hepaticae and Anthocerotaceae of North America. Volume 6. Field Museum of Natural History, Chicago, 1992, 937 pp.
- ^ S. Jovet-Ast: Les Riccia de la Région méditerranéenne. In: Cryptogamie Bryologie Lichenology . Supplement 7 (3), 1986, pp. 287-431.
- ^ L. Opinion & W. Schröder: Distribution atlas of the mosses of Germany. Volume 1. Regensburg, 2007, 636 pp.
- ↑ R. Düll: Pointer values of deciduous and liverworts. In: H. Ellenberg, HE Weber, R. Düll, V. Wirth & W. Werner: Pointer values of plants in Central Europe. 3rd, revised edition, 2001, pp. 175–220.
- ^ HJ During: Life Strategies of Bryophytes: a preliminary review . In: Lindbergia No. 5, 1979, pp. 2-18.
