Yew-leaved double-leaf moss
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Yew-leaved double-leaf moss ( Diplophyllum taxifolium ) |
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| ( Election B. ) Dumort. |
The yew-leaved double-leaf moss ( Diplophyllum taxifolium ) is a liverwort species from the Scapaniaceae family .
features
The moss forms yellow-green to brown-green lawns. It is very similar to the light-streaked double leaf moss , but the plants are only about 2 millimeters wide. The leaves are bilobed, with a small, obliquely forward-facing upper lobe and the approximately two to three times larger, laterally protruding, tongue-shaped lower lobe. This is partly finely serrated at the edge by protruding cells.
The leaf cells are of different sizes: square at the edge of the leaf, about 7 to 10 µm in size, somewhat larger and short rectangular in the middle of the leaf, 12 by 15 µm, elongated at the base of the leaf, 12 by 50 µm in size. There are about 3 to 6 oil bodies per cell, more numerous in the elongated cells on the leaf base. In contrast to the light-streaked double-leaf moss , the species described here lacks a sharply defined, rib-like central stripe of the leaf lobes.
Perianthia are very seldom formed, half of them protrude from the bracts, are broadly ovate, partly folded and slightly serrated to entire at the mouth. However, yellow-green, star-shaped brood bodies are often found at the shoot tips . The moss is diocesan .
Distribution and location requirements
The yew-leaved double-leaf moss is common in the northern hemisphere and occurs here in Europe, Asia and North America. In Central Europe it is widespread in the highlands of the low mountain ranges and in the Alps up to the alpine level. It predominantly colonizes silicate rock in somewhat shady and moderately dry locations.
literature
- Jan-Peter Frahm, Wolfgang Frey, J. Döring: Moosflora . 4th edition, UTB Verlag, 2004, ISBN 3-8252-1250-5
- Nebel, Philippi: Die Moose Baden-Württemberg Volume 3 . 1st edition, Ulmer Verlag, 2005, ISBN 3-8001-3278-8
