Marcescence
The marcescence ( adjectival: marcescent ) characterizes the state of a tree or a shrub which preserves its dead Feuille S attached to the branches during the season of vegetative rest (the Hiver or the season dries), these Feuille S not falling that at the time of pushes back news (with the Printemps or the beginning of the rain season).
The marcescence is regarded as a variation of the nullity, the trees and shrubs with null and void foliage (or décidu) changing sheets into block each year and knowing a more or less long phase without alive sheets.
Several species of trees belonging to the order of the Fagales the such Oak S, the Beech S, the Charm S, the Châtaignier S… frequently present foliages marcescents. At these species, the marcescence is rather a mark of youth; the large trees seldom preserve their foliage flêtri. The marcescence can also be stopped by particular climatic conditions which cause the fall of the sheets in the course of winter (wind, frozen).
One also qualifies marcescentes all other parts vegetable which remain desiccated on the plant whereas they died. Thus it of the flowers of the heathers goes from there.
Internal bonds
- botanical Glossary
- Wiktionnaire: marcescent
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