The term 'Quivering Tree' is a metaphor for an ASPEN tree, which is a type of tree that is known for its leaves quivering in the wind. ASPEN trees are native to North America and can be found in many parts of the United States and Canada. They are deciduous trees, meaning they lose their leaves in the fall and grow new ones in the spring. ASPEN trees are also known for their white bark and their ability to reproduce quickly.