Common basin moss
| Common basin moss | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Common basin moss ( Pellia epiphylla ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Pellia epiphylla | ||||||||||||
| ( L. ) Corda |
The common basin moss ( Pellia epiphylla ) is a thaleless liverwort .
features
The common basin moss grows in flat, often extensive lawns. The creeping thalli are dark green to light green, also reddish in light locations, ribbon-shaped, irregularly forked, cut out heart-shaped at the tips, up to 5 centimeters long and about 0.8 to 1.5 centimeters wide, thin-fleshed and somewhat transparent at the edges. With the rhizoids on their underside, they adhere to the substrate. The broad, indistinctly delimited thallus rib is about 10 to 15 cells thick and slightly protruding on the underside. The thallus cells each have 25 to 35 oil bodies and have ring-shaped or helical thickening strips, especially in the middle of the thallus. At the edge of the thallus, the cells are elongated, two to four times as long as they are wide. The top and bottom of the thallus tips are covered with two-cell mucous hair.
The species is monoic . Antheridia are sunk along the rib on the upper side of the thallus. The sporophyte grows out of a small thallus scale, the perichaetium, which is open towards the tip of the thallus. The kalyptra clearly towers above the perichaetium. The spherical spore capsule is carried by the seta , which is often over 5 centimeters long . Spores ripen in spring, they are egg-shaped and about 70 to 150 µm long. The moss is often fruiting.
Subspecies
The moss occurs in two subspecies, which can hardly be distinguished morphologically:
- subsp. epiphylla , with chromosome number n = 9
- subsp. borealis (Lorb.) Mass, with chromosome number n = 18.
Location claims and occurrences
The common basin moss grows in more or less shady, permanently moist to wet, lime-poor or lime-free, fairly acidic to sub-neutral locations, especially on sandy-loamy to clayey soils, but also on wet rocks and walls and on peat. The habitats are preferably in forests, where it colonizes forest floor, embankments, lanes and ditches. It also grows on bodies of water and waterfalls and in moors, springs and swamps. As a pioneering species, it can colonize young cracks quickly and overgrow smaller, less competitive species.
The species is common in the northern hemisphere. In Central Europe it is quite common, especially in areas with a lime-poor subsoil, and it occurs as far as the subalpine level of the Alps .
literature
- Jan-Peter Frahm, Wolfgang Frey, J. Döring: Moosflora . 4th edition, UTB Verlag, ISBN 3-8252-1250-5
- Ruprecht Düll, Barbara Düll-Wunder: Determine mosses easily and reliably . Quelle & Meyer Verlag Wiebelsheim, ISBN 978-3-494-01427-2
- Nebel, Philippi: Die Moose Baden-Württemberg Volume 3 . 1st edition, Ulmer Verlag, 2005, ISBN 3-8001-3278-8
