Looking out my window, I see trees suffering from drought. I once knew the name for the degrees visible, but I have forgotten and can't find it on the net.
Attempt at describing "level of dryness"
The tree is completely without leaves (at a season where it should have at least some leaves).
The tree has at least some bushels of leaves on the main branches, interspersed with dry areas without any leaves.
The tree has leaves all around the main branches (those which are attached to the stem), but not on any secondary branches.
The tree has leaves on the main branches and secondary branches.
What are the names for those levels, or other levels, in case I missed some?