Renewal scion
As renewal rung or innovation engine leafy shoots are perennial grasses called, from which there are no straws in the first year. They are numerous, short and more or less densely leafed. In contrast to the side stalks of annual grasses, no knots can be seen. Renewal shoots always form from a bud that is located at the base of a leaf sheath. They can either continue to grow within the leaf sheath or break through the leaf sheath at the base. In the first case the species forms dense cushions , in the second a more or less loose cushion or a clump . A renewal shoot growing within the leaf sheath has a longer, thin-skinned cover sheet at the bottom , and the next leaf above the cover sheet is already fully developed and shows the leaf sheath, ligule and leaf blade. In the case of renewal shoots that grow outside the leaf sheath, the cover leaf is short and coarse-skinned and can only be recognized by its two keels. The leaves that grow above the cover leaf are also transformed into short, coarse-skinned scale leaves, and only higher leaves gradually become longer.
swell
literature
- Hans Joachim Conert: Parey's grass book. Recognize and determine the grasses of Germany . Parey, Berlin 2000, ISBN 3-8263-3327-6 , pp. 3 .
- Gerhard Wagenitz : Dictionary of botany. Morphology, anatomy, taxonomy, evolution. 2nd, expanded edition. Nikol, Hamburg 2008, ISBN 978-3-937872-94-0 , pp. 158-159.