The major subdivisions of botany are:

Agronomy—The application of plant science to crop production.

Bryology—The study of mosses and liverworts.

Economic botany—The study of the utilization of plants by humans.

Ethnobotany—The study of the use of plants by indigenous peoples.

Forestry—The study of forest management and the utilization of forest products.

Horticulture—The study of ornamental plants, vegetables, and fruit trees.

Paleobotany—The study of fossil plants.

Palynology—The study of pollen and spores.

Phytochemistry—The study of plant chemistry, including the chemical processes that take place in plants.

Plant anatomy—The study of plant cells and tissues.

Plant ecology—The study of the role plants play in the environment.

Plant genetics—The study of genetic inheritance in plants.

Plant morphology—The study of plant forms and life cycles.

Plant pathology—The study of plant diseases.

Plant physiology—The study of plant function and development.

Plant systematics—The study of the classification and naming of plants.