![]() |
Why do some...
....dead leaves hang onto their branches longer than others?
|
Why do some...
On Dec 9, 10:58*am, Boater wrote:
...dead leaves hang onto their branches longer than others? Googling skills out of whack? Scarlet oak provides a special bonus for our autumn enjoyment. Its leaves stay attached to the tree into the winter. Normally, leaves of deciduous trees are shed in the fall after a special layer of cells forms at the base of the petiole (the abscission zone). With a little wind, these thin cells break and the leaf falls. In so-called marcescent (leaves withering but not falling off) species, including many oaks and beech, the abscission zone doesn’t begin to form until winter, and the leaves are not shed until winter or spring. One writer speculates that the pilgrims landing at Plymouth Rock must have appreciated scarlet oak as the only tree in the forest that still had leaves. While the veracity of this story seems tenuous, the idea that scarlet oak is a species to enjoy is solid as an oak. |
All times are GMT +1. The time now is 08:58 PM. |
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 BoatBanter.com