Bryum elegans
| Bryum elegans | ||||||||||||
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Dainty pear moss ( Bryum elegans ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Bryum elegans | ||||||||||||
| Brid. |
Bryum elegans , also called "Zierliches Pirnmoos" in German, grows in dense, green lawns with a reddish-brown interior. It can be part of the group of species Bryum capillare agg. be asked.
Identifying features
Particularly characteristic of Bryum elegans are the strong, coarse or finely papillary rhizoids . The dry, close-fitting, moist, upright leaves are ovate and suddenly pulled out into a more or less long, often slightly bent back hair tip. The leaf margin is usually lined with 1 to 2 rows of elongated cells. The midrib is often reddish in color on older leaves and appears as a short awn even on young leaves. The lamina cells, 35 to 50 µm long and 15 to 20 µm wide, are indistinctly spotted. The spores have a diameter of 11 to 15 µm and are formed in summer. However, spore ripening occurs rarely.
Occurrence
Bryum elegans colonizes lime-rich, base-rich, light to partially shaded, dry to slightly moist locations. There it is mostly found lithophytically on rocks, stones, or in overground crevices and depressions. It also settles less often rocky dry grassland, humus, calcareous soil. The moss always prefers open, little shaded areas. It has its main occurrence in Central Europe. Area boundaries are Iceland in the north, North Africa in the south and Russia in the east. It can penetrate up to nival levels in the Alps.
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 .
