The (supposed) art of discovering the qualities of a plant from its appearance; vegetable physiognomy.

The department of botany which treats of the localities where plants are found. Obsolete.

Usually with singular agreement. With distinguishing word.

The branch of botany that deals with cryptogams.

= palaeobotany, n.

The branch of science and philosophy concerned with the laws or principles governing the operation of the mind, esp. as defined by custom or culture…

the branch of botany concerned with the structure and organization of plants and their parts and tissues; plant anatomy and morphology.

The chemistry of plants and plant products.

= phytochemistry, n.

The branch of science concerned with the geographical distribution of plants. Also: the phytogeographic features of a region.

The (supposed) connection between plants and celestial objects; esp. the practice of harvesting medicinal plants in accordance with astrology.

The branch of science concerned with the laws or principles of plant life, variously interpreted as covering their internal anatomy, their…

plant physiology.

= palaeobotany, n.

The biology of plants.

The branch of science concerned with diseases of plants; plant pathology.

the branch of science that deals with the normal functioning of plants and their parts.

The branch of botany that deals with extinct and fossil plants.

= phytogeography, n.; (also) a description of plant distribution.

The branch of palaeontology concerned with extinct and fossil plants; palaeobotany.

= phytopathology, n.

The traditional knowledge and customs of a people concerning plants; the scientific study or description of this.

That branch of phytogeography which deals with the distribution and abundance of plants.

the functioning of a plant or plant community in relation to its physical environment.

the branch of biology concerned with congenital defects and abnormal formations of plants; plant teratology.

The branch of biology concerned with the relations of plants with their environment; plant ecology.

= phytogeography, n.

The branch of science which deals with plant communities, their composition and development, and the relationships between the species within them…

The scientific analysis or study of plant remains from archaeological sites; the study of how people used or interacted with plants in the past…

The ethnobotany of the past; the archaeological study of remains of plants cultivated or utilized by early man.