Grimmia ovalis
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Grimmia ovalis (Eifrüchtiges cushion moss) is a moss - kind from the family Grimmiaceae .
features
Grimmia ovalis forms loose, easily disintegrating, dark green or brownish lawns that shimmer gray through the glass hair. The upright stems are 1 to 3 centimeters high and bare in the lower part. The trunk cross-section shows a clear central strand. The dry, loosely fitting, moist, upright leaves are 1.7 to 4 millimeters long, 0.4 to 0.8 millimeters wide, have an egg-shaped base and lanceolate, and the upper half is semicircular in cross-section. The leaf margins are flat or slightly inward at the top. The strong leaf vein is roughly evenly wide, flattened at the bottom and indistinct in the upper part. The upper stalk leaves are larger and have toothed glass hair, the lower ones are smaller and hairless.
The lower part of the lamina is single-celled, but at least from the middle of the leaf is double-celled throughout. The cells are elongated at the base of the leaf near the ribs, rectangular and uniformly thickened, shorter towards the edges with thick transverse walls and thin longitudinal walls, often hyaline at the edge; in the upper part of the leaf, the cells are usually round, square, thick-walled and 5 to 8 µm in size.
The diocesan moss rarely has any fruit. The seta is straight when moist, about 3 to 4 millimeters long, the upright or slightly inclined spore capsule is fairly broad, ovate, smooth and narrow-mouthed, with a purple peristome . The capsule lid is beaked crooked, the kalyptra cap-shaped.
Synonyms
Synonyms are:
- Dicranum ovale Hedw.
- Grimmia commutata Huebener
- Grimmia ovata F. Weber & D. Mohr
- Guembelia ovalis (Hedw.) Müll. Hal .
Distribution and location requirements
Grimmia ovalis grows on sunny, dry-warm silicate rocks, in Central Europe scattered in the low mountain ranges and the Alps. Worldwide there are occurrences in Europe, Asia, North Africa and North America.
swell
- Jan-Peter Frahm , Wolfgang Frey : Moosflora (= UTB . 1250). 4th, revised and expanded edition. Ulmer, Stuttgart 2004, ISBN 3-8252-1250-5 .
- Martin Nebel, Georg Philippi (ed.): The mosses of Baden-Württemberg. Volume 1: General part, special part (Bryophytina I, Andreaeales to Funariales). Ulmer, Stuttgart 2000, ISBN 3-8001-3527-2 .
