Pleuridium
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Pleuridium (German Seitenköpfchenmoose ) is a genus of deciduous moss from the family Ditrichaceae .
features
They are small, cleistocarpic mosses with stems that are less than one centimeter in size. These are leaf-like in tufts, so the top leaves are larger than the bottom. The up to 2 millimeters long leaves are upright or slightly twisted on one side and tapering from the ovate-lanceolate, more or less sheathed base into a long awl tip. The wide rib completely fills the awl part. The Sporogons have a very short seta and an egg-shaped, cleistocarpic capsule sunk into the leaves.
Systematics and types
Pleuridium is closely related to the genera Ditrichum and Cleistocarpidium . Pleuridium species can form hybrids with Ditrichum pallidum .
The cosmopolitan genus Pleuridium includes 30 species worldwide. The following 2 types are represented in Europe:
Pleuridium palustre has recently been part of the genus Cleistocarpidium and is now called Cleistocarpidium palustre .
literature
- Jan-Peter Frahm , Wolfgang Frey : Moosflora (= UTB . 1250). 4th, revised and expanded edition. Ulmer, Stuttgart 2004, ISBN 3-8252-1250-5 .
- Wolfgang Frey, Michael Stech, Eberhard Fischer: Bryophytes and Seedless Vascular Plants (= Syllabus of Plant Families. 3). 13th edition. Borntraeger, Berlin et al. 2009, ISBN 978-3-443-01063-8 .
- 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 .
