Hypnum sauteri
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Hypnum sauteri |
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Hypnum sauteri is a pleurocarpic moss from the Hypnaceae family , which is named after the Tyrolean doctor Anton Sauter (1800–1881). German names are Zierliches Schlafmoos or Sauters Schlafmoos .
features
The plants of this type of moss are very small, up to 2 centimeters long, and with the creeping and irregularly feathered stems form yellow-green to golden-brown coatings that usually adhere to the ground. The one-sided, broadly lanceolate, awl-shaped, sickle-shaped to circularly curved leaves are only up to 0.3 millimeters wide and have entire margins to slightly serrated. A leaf vein is missing or weakly indicated. There are only a few square to rectangular leaf wing cells. The cells in the middle of the leaf are 25 to 60 µm long, usually not spotted and thick-walled, while those in the base of the leaf are wider, elongated, rectangular, yellowish and spotted. The only sparsely existing pseudoparaphyllia are broadly lanceolate to ovate. The trunk cross-section has no central cord and no hyaline outer cortex.
The sporophytes have a reddish-brown seta up to 17 millimeters long, a sloping to horizontal, curved and elongated capsule with a conical, short and bluntly beaked lid. The moss is monoecious . It is often fruitful.
Distribution and location requirements
Hypnum sauteri with subarctic-subalpine distribution occurs only in Europe. The moss loves chalk and grows on moist rock in shady to light locations in montane to subalpine altitudes.
literature
- 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 2: Special part, (Bryophytina II, Schistostegales to Hypnobryales). Ulmer, Stuttgart 2001, ISBN 3-8001-3530-2 .
