The biology-resources link is here: link. I think it's for high school biology students. I once was one of those, but only for one year when I did a crash course biology "O" Grade
Here's one of the illustrations that inspired the foray - a Horse Chestnut twig:
You can see above the little collection of scars where the previous year's bud scales would have been, and the leaf scars with vascular bundles closed off in autumn to protect the tree from dehydration.
I also recorded Sycamore, Pedunculate Oak and Beech since I was "doing" trees
|Oak, clustered ends|