Leskea
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Leskea (German Leskemoose ) is a genus of deciduous mosses in the order Hypnales .
features
The plants are small and form light green to dark green or brownish green lawns. The trunks are more or less pinnately branched, the branches horizontal to ascending. Paraphyllia are only sparsely present and are linear to lanceolate. Stem leaves and branch leaves are similar to one another, dry upright or slightly bent back, moist upright, elongated-ovate or ovate-lanceolate and somewhat asymmetrical. The leaf margins are flat or bent back at the base, with entire margins, sometimes weakly serrated at the tip. The leaf vein ends before the leaf tip. Lamina cells are irregularly square to six-sided, thick-walled and 4 to 11 micrometers in size. They are smooth or have one or two papillae. In the middle of the leaf base, the cells are a little longer.
The species are autocratic (antheridia and archegonia on different branches of the same plant). The seta is 4 to 12 millimeters long, the cylindrical capsule is upright to sloping, the lid is conical. The peristome is double, with the teeth on the outer surface curved inward, but the inner teeth straight. The smooth to very fine papillary spores measure 9 to 18 micrometers.
Systematics
The genus Leskea includes 24 species worldwide. They are mainly found in the temperate zones of Asia and North America. There are also deposits in Europe, Central and South America and Africa.
In Europe the genus is only represented by one species:
Leskea polycarpa , Many-fruited Leskemoos.
Other types are
- Leskea angustata Taylor
- Leskea catenularia (Garbage. Hal.) Broth.
- Leskea filivaga (Garbage. Hal.) Broth.
- Leskea laeviseta (Crome) Schultz
- Leskea montanae (Bryhn) Grout
- Leskea obscura Hedw.
- Leskea tamariscina (Hedw.) Mitt.
- Leskea tenuirostris (Schwägr.) Hook. ex Hampe
- Leskea viticulosa (Hedw.) Spruce
swell
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 2: Special part, (Bryophytina II, Schistostegales to Hypnobryales). Ulmer, Stuttgart 2001, ISBN 3-8001-3530-2 .
