Explanation:

- Paleobotany: This branch of botany focuses on the study of fossilized plants and the evolutionary history of plants through the ages.

- Ethnobotany: This field examines the relationship between humans and plants, particularly how different cultures use and perceive plants.

- Dendrology: A branch of botany concerned with the study of trees and woody plants, focusing on their taxonomy and identification.

- Palynology: A scientific discipline dealing with the study of plant pollen, spores, and certain microscopic planktonic organisms in both living and fossil form.